[2689] | 1 | // |
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| 2 | // C++ Interface: PlotHelper |
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| 3 | // |
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| 4 | // Description: |
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| 5 | // A small helper class to handle direction coordinate in asapplotter |
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| 6 | // |
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| 7 | // Author: Kana Sugimoto <kana.sugi@nao.ac.jp>, (C) 2012 |
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| 8 | // |
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| 9 | // Copyright: See COPYING file that comes with this distribution |
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| 10 | // |
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| 11 | // |
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| 12 | |
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| 13 | // casacore |
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| 14 | #include <casa/Arrays/Vector.h> |
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| 15 | #include <casa/Quanta/Quantum.h> |
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| 16 | #include <casa/Quanta/QuantumHolder.h> |
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[2719] | 17 | #include <casa/Quanta/MVAngle.h> |
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[2689] | 18 | #include <casa/Logging/LogIO.h> |
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| 19 | |
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[2717] | 20 | #include <measures/Measures/MDirection.h> |
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| 21 | #include <tables/Tables/TableRecord.h> |
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| 22 | |
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| 23 | |
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[2689] | 24 | #include "PlotHelper.h" |
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| 25 | |
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[2717] | 26 | //#ifndef KS_DEBUG |
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[2690] | 27 | //#define KS_DEBUG |
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[2717] | 28 | //#endif |
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[2689] | 29 | |
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| 30 | using namespace std ; |
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| 31 | using namespace casa ; |
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| 32 | using namespace asap ; |
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| 33 | |
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| 34 | namespace asap { |
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| 35 | |
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[2719] | 36 | PlotHelper::PlotHelper() : dircoord_p(0) |
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[2689] | 37 | { |
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| 38 | #ifdef KS_DEBUG |
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[2717] | 39 | cout << "Default constructor nrow = " << data_p->nrow() << endl; |
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[2689] | 40 | #endif |
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| 41 | }; |
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| 42 | |
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[2719] | 43 | PlotHelper::PlotHelper( const ScantableWrapper &s) : dircoord_p(0) |
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[2689] | 44 | { |
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| 45 | #ifdef KS_DEBUG |
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| 46 | cout << "Constructing PlotHelper with scantable wrapper" << endl; |
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| 47 | #endif |
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| 48 | setScantable(s); |
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| 49 | }; |
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| 50 | |
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| 51 | PlotHelper::~PlotHelper(){ |
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| 52 | #ifdef KS_DEBUG |
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| 53 | cout << "Called PlotHelper destructor" << endl; |
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| 54 | #endif |
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[2719] | 55 | if (dircoord_p){ |
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[2689] | 56 | #ifdef KS_DEBUG |
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[2719] | 57 | cout << "Destructing dircoord_p" << endl; |
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[2689] | 58 | #endif |
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[2719] | 59 | delete dircoord_p; |
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| 60 | dircoord_p = 0; |
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[2689] | 61 | } |
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| 62 | }; |
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| 63 | |
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| 64 | void PlotHelper::setScantable( const ScantableWrapper &s ) |
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| 65 | { |
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| 66 | #ifdef KS_DEBUG |
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| 67 | cout << "Setting scantable" << endl; |
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| 68 | #endif |
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[2717] | 69 | data_p = s.getCP(); |
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[2689] | 70 | }; |
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| 71 | |
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| 72 | |
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[2717] | 73 | DirectionCoordinate PlotHelper::getSTCoord(const int nx, const int ny, |
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| 74 | const Projection::Type ptype) |
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| 75 | { |
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| 76 | LogIO os(LogOrigin("PlotHelper","getSTCoord()", WHERE)); |
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[2718] | 77 | os << "Getting pointing information of the scantable." << LogIO::POST; |
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[2717] | 78 | if (data_p->nrow() < 1) |
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| 79 | throw AipsError("Scantable is not set. Please set a scantable first."); |
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[2689] | 80 | |
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[2717] | 81 | // First, generate rough direction coordinate. |
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| 82 | DirectionCoordinate coord; |
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| 83 | Double incx, incy; |
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| 84 | MDirection::Types mdt; |
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| 85 | ROArrayColumn<Double> dircol; |
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| 86 | Double xmax, xmin, ymax, ymin; |
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| 87 | Double centx, centy; |
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| 88 | Matrix<Double> xform(2,2); |
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| 89 | xform = 0.0; |
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| 90 | xform.diagonal() = 1.0; |
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| 91 | // Rough estimates of center and cell from scantable DIRECTIONs. |
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| 92 | dircol.attach( data_p->table(), "DIRECTION" ); |
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| 93 | const Vector<String> udir = dircol.keywordSet().asArrayString("QuantumUnits"); |
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| 94 | const Matrix<Double> direction = dircol.getColumn(); |
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| 95 | minMax(xmin, xmax, direction.row(0)); |
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| 96 | minMax(ymin, ymax, direction.row(1)); |
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| 97 | if (!MDirection::getType(mdt, data_p->getDirectionRefString())) |
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| 98 | throw AipsError("Failed to get direction reference from scantable."); |
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| 99 | centx = 0.5 * (xmin + xmax); |
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| 100 | centy = 0.5 * (ymin + ymax); |
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| 101 | incx = abs(xmax - xmin) / (double) nx * cos(centy); |
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| 102 | incy = abs(ymax - ymin) / (double) ny; |
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| 103 | // Generate a temporal direction coordinte |
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| 104 | coord = DirectionCoordinate(mdt, ptype, |
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| 105 | centx, centy, incx, incy, xform, |
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| 106 | 0.5*Double(nx), 0.5*Double(ny)); |
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| 107 | coord.setWorldAxisUnits(udir); |
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| 108 | #ifdef KS_DEBUG |
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| 109 | {//Debug outputs |
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[2718] | 110 | cout << "Generated a temporal direction coordinate of a scantable: " << endl; |
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[2717] | 111 | Vector<String> units = coord.worldAxisUnits(); |
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| 112 | Vector<Double> refv = coord.referenceValue(); |
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| 113 | cout <<"- Reference: " << MDirection::showType(coord.directionType()) << " " << refv[0] << units[0] << " " << refv[1] << units[1] << endl; |
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| 114 | Vector<Double> refpix = coord.referencePixel(); |
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| 115 | cout <<"- Reference Pixel: [" << refpix[0] << ", " << refpix[1] << "]" << endl; |
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| 116 | Vector<Double> inc = coord.increment(); |
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| 117 | cout <<"- Increments: [" << inc[0] << ", " << inc[1] << "]" << endl; |
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| 118 | cout <<"- Projection: " << coord.projection().name() << endl; |
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| 119 | } |
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| 120 | #endif |
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| 121 | return coord; |
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| 122 | } |
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[2689] | 123 | |
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[2717] | 124 | void PlotHelper::setGridParam(const int nx, const int ny, |
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| 125 | const string cellx, const string celly, |
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| 126 | string center, const string projname) |
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| 127 | { |
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| 128 | LogIO os(LogOrigin("PlotHelper","setGridParam()", WHERE)); |
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[2689] | 129 | // Value check of nx and ny |
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| 130 | if (nx < 1) |
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| 131 | throw(AipsError("nx should be > 0")); |
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| 132 | if (ny < 1) |
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| 133 | throw(AipsError("ny should be > 0")); |
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| 134 | // Destroy old coord |
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[2719] | 135 | if (dircoord_p){ |
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[2689] | 136 | #ifdef KS_DEBUG |
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[2719] | 137 | cout << "Destructing old dircoord_p" << endl; |
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[2689] | 138 | #endif |
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[2719] | 139 | delete dircoord_p; |
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| 140 | dircoord_p = 0; |
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[2689] | 141 | } |
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| 142 | |
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[2717] | 143 | // Check for availability of data_p |
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| 144 | const bool stset = ((data_p->nrow() > 0) ? true : false); |
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| 145 | const bool needst = center.empty() || (cellx.empty() && celly.empty()); |
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| 146 | if (needst && !stset) |
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| 147 | throw AipsError("Could not resolve grid parameters. Please set a scantable first."); |
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| 148 | |
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| 149 | // projection |
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| 150 | Projection::Type projtype(Projection::type(String(projname))); |
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| 151 | |
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| 152 | // Calculate projected map center (in world coordinate) |
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| 153 | // and extent (in pixel coordinate) from scantable DIRECIONs (if necessary). |
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| 154 | MDirection stcent; |
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| 155 | Double stxmax, stxmin, stymax, stymin; |
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| 156 | MDirection::Types stdt; |
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| 157 | DirectionCoordinate stcoord; |
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| 158 | Quantum<Double> stincx, stincy; |
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| 159 | if (needst && stset) { |
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| 160 | stcoord = getSTCoord(nx, ny, projtype); |
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| 161 | Vector<Double> inc = stcoord.increment(); |
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| 162 | Vector<String> units = stcoord.worldAxisUnits(); |
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| 163 | stincx = Quantum<Double>(inc[0], units[0]); |
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| 164 | stincy = Quantum<Double>(inc[1], units[0]); |
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| 165 | stdt = stcoord.directionType(); |
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| 166 | // Get the extent of directions in Pixel coordinate |
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| 167 | ROArrayColumn<Double> dircol; |
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| 168 | dircol.attach( data_p->table(), "DIRECTION" ); |
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| 169 | const Matrix<Double> direction = dircol.getColumn(); |
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| 170 | Matrix<Double> dirpix; |
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| 171 | Vector<Bool> failures; |
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| 172 | if (!stcoord.toPixelMany(dirpix, direction, failures)) |
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| 173 | throw AipsError("Failed to get directions in pixel coordinate."); |
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| 174 | minMax(stxmin, stxmax, dirpix.row(0)); |
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| 175 | minMax(stymin, stymax, dirpix.row(1)); |
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| 176 | // Get the direction center in World coordinate. |
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| 177 | Vector<Double> centpix(2); |
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| 178 | centpix[0] = 0.5 * (stxmin + stxmax); |
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| 179 | centpix[1] = 0.5 * (stymin + stymax); |
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| 180 | stcoord.toWorld(stcent, centpix); |
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| 181 | #ifdef KS_DEBUG |
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| 182 | {//Debug output |
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| 183 | Quantum< Vector<Double> > qcent; |
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| 184 | cout << "Got the center and map extent of scantable." << endl; |
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| 185 | qcent = stcent.getAngle(); |
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| 186 | cout << "- Center of DIRECTIONs: " << stcent.getRefString() << " " |
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| 187 | << qcent.getValue()[0] << qcent.getUnit() << " " |
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| 188 | << qcent.getValue()[1] << qcent.getUnit() << endl; |
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| 189 | cout << "- Map extent: [" << (stxmax-stxmin)*stincx.getValue() << ", " |
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| 190 | << (stymax-stymin)*stincy.getValue() << "] ( " << stincx.getUnit() << ")" << endl; |
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| 191 | } |
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| 192 | #endif |
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| 193 | } |
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| 194 | |
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[2718] | 195 | os << "Setting grid parameters" << LogIO::POST; |
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[2717] | 196 | // Now, define direction coordinate from input parameters (in radian) |
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| 197 | Double incx, incy; |
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| 198 | Double centx, centy; |
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| 199 | MDirection::Types mdt; |
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| 200 | // center |
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| 201 | if (center.empty()){ |
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[2718] | 202 | os << "center is not specified. Using pointing center of the scantable." << LogIO::POST; |
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[2717] | 203 | if (!stset) |
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| 204 | throw AipsError("Scantable is not set. Could not resolve map center."); |
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[2718] | 205 | |
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[2717] | 206 | centx = stcent.getAngle("rad").getValue()[0]; |
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| 207 | centy = stcent.getAngle("rad").getValue()[1]; |
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| 208 | mdt = stdt; |
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| 209 | } else { |
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[2718] | 210 | os << "Using user defined center" << LogIO::POST; |
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[2717] | 211 | // Parse center string |
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| 212 | string::size_type pos0 = center.find(" "); |
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| 213 | |
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| 214 | if (pos0 == string::npos) |
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| 215 | throw AipsError("bad string format in center direction"); |
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| 216 | |
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| 217 | string::size_type pos1 = center.find(" ", pos0+1); |
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| 218 | String sepoch, sra, sdec; |
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| 219 | if (pos1 != string::npos) { |
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| 220 | sepoch = center.substr(0, pos0); |
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| 221 | sra = center.substr(pos0+1, pos1-pos0); |
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| 222 | sdec = center.substr(pos1+1); |
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| 223 | } else { |
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| 224 | sepoch = "J2000"; |
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| 225 | sra = center.substr(0, pos0); |
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| 226 | sdec = center.substr(pos0+1); |
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| 227 | } |
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| 228 | if (!MDirection::getType(mdt,sepoch)) |
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| 229 | throw AipsError("Invalid direction reference in center"); |
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[2719] | 230 | if (stset){ |
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| 231 | if ( !needst && |
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| 232 | !MDirection::getType( stdt, data_p->getDirectionRefString() ) ) |
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| 233 | throw AipsError("Failed to get direction reference from scantable."); |
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| 234 | if (mdt != stdt) |
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| 235 | throw AipsError("Direction reference of center should be the same as input scantable"); |
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| 236 | } |
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[2717] | 237 | QuantumHolder qh ; |
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| 238 | String err ; |
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| 239 | qh.fromString(err, sra); |
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| 240 | Quantum<Double> ra = qh.asQuantumDouble(); |
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| 241 | qh.fromString(err, sdec) ; |
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| 242 | Quantum<Double> dec = qh.asQuantumDouble(); |
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| 243 | centx = ra.getValue("rad"); |
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| 244 | centy = dec.getValue("rad"); |
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| 245 | // rotaion |
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| 246 | if (stset) { |
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| 247 | Double stcentx = stcent.getAngle("rad").getValue()[0]; |
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| 248 | Double rotnum = round( abs(centx - stcentx) / (C::_2pi) ); |
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| 249 | if (centx < stcentx) rotnum *= -1; |
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| 250 | centx -= (rotnum * C::_2pi); |
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| 251 | } |
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| 252 | } |
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[2718] | 253 | os << "Grid center: ( " << centx << " rad , " << centy << " rad ) " << LogIO::POST; |
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[2717] | 254 | |
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| 255 | // cell |
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| 256 | if (cellx.empty() && celly.empty()){ |
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[2718] | 257 | os << "cell size is not specified. Using cell size to cover all pointings in the scantable." << LogIO::POST; |
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[2717] | 258 | if (!stset) |
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| 259 | throw AipsError("Scantable is not set. Could not resolve cell size."); |
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[2718] | 260 | |
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[2717] | 261 | Vector<Double> centpix; |
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| 262 | MDirection centmd = MDirection(Quantum<Double>(centx, "rad"), |
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| 263 | Quantum<Double>(centy, "rad"), mdt); |
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| 264 | stcoord.toPixel(centpix, centmd); |
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| 265 | #ifdef KS_DEBUG |
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| 266 | cout << "- got centpix [" << centpix[0] << ", " << centpix[1] << "]" <<endl; |
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| 267 | #endif |
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| 268 | Double wx = max( abs(stxmax-centpix[0]), abs(stxmin-centpix[0]) ) |
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| 269 | * 2 * stincx.getValue("rad"); |
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| 270 | Double wy = max( abs(stymax-centpix[1]), abs(stymin-centpix[1]) ) |
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| 271 | * 2 * stincy.getValue("rad"); |
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| 272 | incx = wx / max(nx - 1., 1.); |
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| 273 | incy = wy / max(ny - 1., 1.); |
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| 274 | } else { |
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[2718] | 275 | os << "Using user defined cell size" << LogIO::POST; |
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[2717] | 276 | Quantum<Double> qcellx, qcelly; |
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| 277 | if (!cellx.empty() && !celly.empty()){ |
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| 278 | readQuantity(qcellx, String(cellx)); |
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| 279 | readQuantity(qcelly, String(celly)); |
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| 280 | } else if (celly.empty()) { |
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| 281 | readQuantity(qcellx, String(cellx)); |
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| 282 | qcelly = qcellx; |
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| 283 | } else { //only celly is defined |
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| 284 | readQuantity(qcelly, String(celly)); |
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| 285 | qcellx = qcelly; |
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| 286 | } |
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| 287 | incx = qcellx.getValue("rad"); |
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| 288 | incy = qcelly.getValue("rad"); |
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| 289 | } |
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[2718] | 290 | // inc should be negative to transpose plot |
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| 291 | incx = -abs(incx); |
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| 292 | incy = -abs(incy); |
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[2717] | 293 | |
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[2718] | 294 | os << "Spacing: ( " << abs(incx) << " rad , " << abs(incy) << " rad )" <<endl; |
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| 295 | |
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[2719] | 296 | setupCoord(mdt, projtype, centx, centy, incx, incy, |
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| 297 | 0.5*Double(nx), 0.5*Double(ny)) ; // pixel at center) |
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| 298 | |
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[2717] | 299 | }; |
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| 300 | |
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| 301 | void PlotHelper::setGridParamVal(const int nx, const int ny, |
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| 302 | const double cellx, const double celly, |
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| 303 | const double centx, const double centy, |
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| 304 | const string epoch, const string projname){ |
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[2718] | 305 | LogIO os(LogOrigin("PlotHelper","setGridParamVal()", WHERE)); |
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[2717] | 306 | // Value check of nx and ny |
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| 307 | if (nx < 1) |
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| 308 | throw(AipsError("nx should be > 0")); |
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| 309 | if (ny < 1) |
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| 310 | throw(AipsError("ny should be > 0")); |
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| 311 | // Destroy old coord |
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[2719] | 312 | if (dircoord_p){ |
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[2717] | 313 | #ifdef KS_DEBUG |
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[2719] | 314 | cout << "Destructing old dircoord_p" << endl; |
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[2717] | 315 | #endif |
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[2719] | 316 | delete dircoord_p; |
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| 317 | dircoord_p = 0; |
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[2717] | 318 | } |
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| 319 | |
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[2689] | 320 | // center (in rad) |
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| 321 | Double centX(centx), centY(centy); |
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| 322 | // cell size (in rad) |
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| 323 | Double incX(cellx), incY(celly); |
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| 324 | // epoch |
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| 325 | MDirection::Types mdt; |
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| 326 | MDirection::getType(mdt, String(epoch)); |
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| 327 | // projection |
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| 328 | Projection::Type projType(Projection::type(String(projname))); |
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| 329 | |
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[2719] | 330 | setupCoord(mdt, projType, centX, centY, incX, incY, |
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| 331 | 0.5*Double(nx), 0.5*Double(ny)) ; // pixel at center |
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| 332 | // 0.5*Double(nx-1), 0.5*Double(ny-1)) ; // pixel at grid |
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| 333 | |
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| 334 | }; |
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| 335 | |
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| 336 | |
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| 337 | void PlotHelper::setupCoord(const MDirection::Types mdt, |
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| 338 | const Projection::Type pjt, |
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| 339 | const Double centx, const Double centy, |
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| 340 | const Double incx, const Double incy, |
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| 341 | const Double refx, const Double refy) |
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| 342 | { |
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| 343 | LogIO os(LogOrigin("PlotHelper","setupCoord()", WHERE)); |
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| 344 | // Destroy old coord |
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| 345 | if (dircoord_p){ |
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| 346 | #ifdef KS_DEBUG |
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| 347 | cout << "Destructing old dircoord_p" << endl; |
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| 348 | #endif |
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| 349 | delete dircoord_p; |
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| 350 | dircoord_p = 0; |
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| 351 | } |
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| 352 | |
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[2689] | 353 | Matrix<Double> xform(2,2) ; |
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| 354 | xform = 0.0 ; |
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| 355 | xform.diagonal() = 1.0 ; |
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[2719] | 356 | dircoord_p = new DirectionCoordinate(mdt, pjt, centx, centy, incx, incy, |
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| 357 | xform, refx, refy); |
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[2718] | 358 | {//Summary |
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| 359 | os << "Successfully generated grid coordinate:" << LogIO::POST; |
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[2719] | 360 | Vector<String> units = dircoord_p->worldAxisUnits(); |
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| 361 | Vector<Double> refv = dircoord_p->referenceValue(); |
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| 362 | os <<"- Reference Direction : " |
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| 363 | << MDirection::showType(dircoord_p->directionType()) |
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| 364 | << " " << refv[0] << units[0] << " " << refv[1] << units[1] << LogIO::POST; |
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| 365 | Vector<Double> refpix = dircoord_p->referencePixel(); |
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[2718] | 366 | os <<"- Reference Pixel : [" << refpix[0] << ", " << refpix[1] << "]" << LogIO::POST; |
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[2719] | 367 | Vector<Double> inc = dircoord_p->increment(); |
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[2718] | 368 | os <<"- Increments : [" << inc[0] << ", " << inc[1] << "]" << LogIO::POST; |
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[2719] | 369 | os <<"- Projection Type : " << dircoord_p->projection().name() << LogIO::POST; |
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[2689] | 370 | } |
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| 371 | }; |
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| 372 | |
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[2719] | 373 | vector<double> PlotHelper::getGridPixel(const int whichrow) |
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| 374 | { |
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[2717] | 375 | if (data_p->nrow() < 1) |
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[2689] | 376 | throw AipsError("Scantable is not set. Could not get direction."); |
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[2717] | 377 | else if (whichrow > int(data_p->nrow()) - 1) |
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[2689] | 378 | throw AipsError("Row index out of range."); |
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[2719] | 379 | if (!dircoord_p) |
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[2689] | 380 | throw AipsError("Direction coordinate is not defined."); |
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| 381 | |
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| 382 | Vector<Double> pixel; |
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| 383 | MDirection world; |
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| 384 | vector<double> outvec; |
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[2717] | 385 | world = data_p->getDirection(whichrow); |
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[2689] | 386 | #ifdef KS_DEBUG |
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[2717] | 387 | cout << "searching pixel position (world = " << data_p->getDirectionString(whichrow) << " = [" << world.getAngle("rad").getValue()[0] << ", " << world.getAngle("rad").getValue()[1] << "])" << endl; |
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[2689] | 388 | #endif |
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[2719] | 389 | dircoord_p->toPixel(pixel, world); |
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[2689] | 390 | #ifdef KS_DEBUG |
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| 391 | cout << "got pixel = [" << pixel[0] << ", " << pixel[1] << "]" << endl; |
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| 392 | #endif |
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| 393 | // convert pixel to std vector |
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| 394 | pixel.tovector(outvec); |
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| 395 | return outvec; |
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| 396 | }; |
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| 397 | |
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[2719] | 398 | string PlotHelper::getGridRef() |
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| 399 | { |
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| 400 | if (!dircoord_p) |
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| 401 | throw AipsError("Direction coordinate is not defined. Please set it first."); |
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| 402 | |
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| 403 | string outref; |
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| 404 | |
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| 405 | Vector<String> units = dircoord_p->worldAxisUnits(); |
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| 406 | Vector<Double> refv = dircoord_p->referenceValue(); |
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| 407 | MVAngle lon( Quantum<Double>(refv[0], units[0]) ); |
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| 408 | MVAngle lat ( Quantum<Double>(refv[1], units[1]) ); |
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| 409 | outref = MDirection::showType(dircoord_p->directionType()) + " " |
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| 410 | + lon(0.0).string(MVAngle::TIME, 9) + " " |
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| 411 | + lat.string(MVAngle::ANGLE+MVAngle::DIG2, 9); |
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| 412 | |
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| 413 | return outref; |
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| 414 | }; |
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| 415 | |
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| 416 | vector<double> PlotHelper::getGridCellVal() |
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| 417 | { |
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| 418 | if (!dircoord_p) |
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| 419 | throw AipsError("Direction coordinate is not defined. Please set it first."); |
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| 420 | |
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| 421 | vector<double> outinc(2); |
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| 422 | Vector<Double> inc = dircoord_p->increment(); |
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| 423 | Vector<String> units = dircoord_p->worldAxisUnits(); |
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| 424 | MVAngle qincx( Quantum<Double>(inc[0], units[0]) ); |
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| 425 | MVAngle qincy( Quantum<Double>(inc[1], units[1]) ); |
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| 426 | outinc[0] = (double) abs(qincx.radian()); |
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| 427 | outinc[1] = (double) abs(qincy.radian()); |
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| 428 | |
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| 429 | return outinc; |
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| 430 | }; |
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| 431 | |
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| 432 | |
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[2689] | 433 | } //namespace asap |
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