[56] | 1 | #include <iostream> |
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| 2 | #include <math.h> |
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| 3 | #include <cpgplot.h> |
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[139] | 4 | #include <duchamp.hh> |
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[56] | 5 | #include <Utils/utils.hh> |
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| 6 | |
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| 7 | void plotLine(const float slope, const float intercept) |
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| 8 | { |
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| 9 | float x1, x2, y1, y2; |
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| 10 | cpgqwin(&x1,&x2,&y1,&y2); |
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| 11 | cpgmove(x1,slope*x1+intercept); |
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| 12 | cpgdraw(x2,slope*x2+intercept); |
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| 13 | } |
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| 14 | |
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| 15 | void lineOfEquality() |
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| 16 | { |
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| 17 | plotLine(1.,0.); |
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| 18 | } |
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| 19 | |
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| 20 | void lineOfBestFit(int size, float *x, float *y) |
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| 21 | { |
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| 22 | float a,b,r,erra,errb; |
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| 23 | linear_regression(size,x,y,0,size-1,a,erra,b,errb,r); |
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| 24 | plotLine(a,b); |
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| 25 | } |
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| 26 | |
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| 27 | void plotVertLine(const float xval, const int colour, const int style) |
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| 28 | { |
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| 29 | float x1, x2, y1, y2; |
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| 30 | cpgqwin(&x1,&x2,&y1,&y2); |
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| 31 | int currentColour,currentStyle; |
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| 32 | cpgqci(¤tColour); |
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| 33 | cpgqls(¤tStyle); |
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| 34 | if(currentColour!=colour) cpgsci(colour); |
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| 35 | if(currentStyle !=style) cpgsls(style); |
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| 36 | cpgmove(xval,y1); |
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| 37 | cpgdraw(xval,y2); |
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| 38 | if(currentColour!=colour) cpgsci(currentColour); |
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| 39 | if(currentStyle !=style) cpgsls(currentStyle); |
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| 40 | } |
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| 41 | |
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| 42 | void plotVertLine(const float xval) |
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| 43 | { |
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| 44 | int colour,style; |
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| 45 | cpgqci(&colour); |
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| 46 | cpgqls(&style); |
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| 47 | plotVertLine(xval,colour,style); |
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| 48 | } |
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| 49 | |
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| 50 | void plotVertLine(const float xval, const int colour) |
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| 51 | { |
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| 52 | int style; |
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| 53 | cpgqls(&style); |
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| 54 | plotVertLine(xval,colour,style); |
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| 55 | } |
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| 56 | |
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| 57 | void plotHorizLine(const float yval, const int colour, const int style) |
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| 58 | { |
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| 59 | float x1, x2, y1, y2; |
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| 60 | cpgqwin(&x1,&x2,&y1,&y2); |
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| 61 | int currentColour,currentStyle; |
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| 62 | cpgqci(¤tColour); |
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| 63 | cpgqls(¤tStyle); |
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| 64 | if(currentColour!=colour) cpgsci(colour); |
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| 65 | if(currentStyle !=style) cpgsls(style); |
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| 66 | cpgmove(x1,yval); |
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| 67 | cpgdraw(x2,yval); |
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| 68 | if(currentColour!=colour) cpgsci(currentColour); |
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| 69 | if(currentStyle !=style) cpgsls(currentStyle); |
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| 70 | } |
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| 71 | |
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| 72 | void plotHorizLine(const float yval) |
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| 73 | { |
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| 74 | int colour,style; |
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| 75 | cpgqci(&colour); |
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| 76 | cpgqls(&style); |
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| 77 | plotHorizLine(yval,colour,style); |
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| 78 | } |
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| 79 | |
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| 80 | void plotHorizLine(const float yval, const int colour) |
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| 81 | { |
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| 82 | int style; |
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| 83 | cpgqls(&style); |
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| 84 | plotHorizLine(yval,colour,style); |
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| 85 | } |
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| 86 | |
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| 87 | void lineOfBestFitPB(const int size, const float *x, const float *y) |
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| 88 | { |
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| 89 | int numSim = int(size * log(float(size)*log(float(size))) ); |
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| 90 | float slope=0, intercept=0; |
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| 91 | float *xboot = new float[size]; |
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| 92 | float *yboot = new float[size]; |
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| 93 | for(int sim=0;sim<numSim;sim++){ |
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| 94 | for(int i=0;i<size;i++){ |
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| 95 | int point = int((1.*rand())/(RAND_MAX+1.0) * size); |
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| 96 | xboot[i] = x[point]; |
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| 97 | yboot[i] = y[point]; |
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| 98 | } |
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| 99 | float a,b,r,erra,errb; |
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| 100 | linear_regression(size,xboot,yboot,0,size-1,a,erra,b,errb,r); |
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| 101 | slope += a; |
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| 102 | intercept += b; |
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| 103 | } |
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| 104 | delete [] xboot,yboot; |
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| 105 | slope /= float(numSim); |
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| 106 | intercept /= float(numSim); |
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| 107 | |
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| 108 | plotLine(slope,intercept); |
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| 109 | } |
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| 110 | |
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| 111 | void drawContours(const int size, const float *x, const float *y) |
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| 112 | { |
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| 113 | float x1, x2, y1, y2; |
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| 114 | cpgqwin(&x1,&x2,&y1,&y2); |
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| 115 | const int nbin = 30; |
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| 116 | // widths of bins in x and y directions |
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| 117 | float xbin = (x2 - x1) / float(nbin-2); // have one bin either side of extrema |
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| 118 | float ybin = (y2 - y1) / float(nbin-2); |
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| 119 | float *binnedarray = new float[nbin*nbin]; |
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| 120 | for(int i=0;i<nbin*nbin;i++) binnedarray[i] = 0.; |
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| 121 | for(int i=0;i<size;i++){ |
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| 122 | int xpos = int( (x[i] - (x1-xbin)) / xbin ); |
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| 123 | int ypos = int( (y[i] - (y1-ybin)) / ybin ); |
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[139] | 124 | if((ypos*nbin+xpos) >= (nbin*nbin)) |
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| 125 | duchampError("drawContours","pixel position out of range"); |
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[56] | 126 | binnedarray[ypos*nbin+xpos] += 1.; |
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| 127 | } |
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| 128 | float maxct = binnedarray[0]; |
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| 129 | for(int i=1;i<nbin*nbin;i++) if(binnedarray[i]>maxct) maxct=binnedarray[i]; |
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| 130 | float tr[6]={x1-3*xbin/2,xbin,0.,y1-3*ybin/2,0.,ybin}; |
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| 131 | const int ncont = 10; |
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| 132 | float *cont = new float[ncont]; |
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| 133 | for(int i=0;i<ncont;i++) cont[i] = maxct / pow(2,float(i)/2.); |
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| 134 | cpgcont(binnedarray,nbin,nbin,1,nbin,1,nbin,cont,ncont,tr); |
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| 135 | delete [] binnedarray; |
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| 136 | delete [] cont; |
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| 137 | } |
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