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