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Diff for /JSOC/proj/sharp/apps/sw_functions.c between version 1.26 and 1.29

version 1.26, 2014/02/19 14:59:25 version 1.29, 2014/05/16 21:55:54
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Line 17 
     MEANPOT Mean photospheric excess magnetic energy density in ergs per cubic centimeter     MEANPOT Mean photospheric excess magnetic energy density in ergs per cubic centimeter
     TOTPOT Total photospheric magnetic energy density in ergs per cubic centimeter     TOTPOT Total photospheric magnetic energy density in ergs per cubic centimeter
     MEANSHR Mean shear angle (measured using Btotal) in degrees     MEANSHR Mean shear angle (measured using Btotal) in degrees
    R_VALUE Karel Schrijver's R parameter
  
    The indices are calculated on the pixels in which the conf_disambig segment is greater than 70 and    The indices are calculated on the pixels in which the conf_disambig segment is greater than 70 and
    pixels in which the bitmap segment is greater than 30. These ranges are selected because the CCD    pixels in which the bitmap segment is greater than 30. These ranges are selected because the CCD
Line 1034  int computeShearAngle(float *bx_err, flo
Line 1035  int computeShearAngle(float *bx_err, flo
         return 0;         return 0;
 } }
  
   /*===========================================*/
   /* Example function 15: R parameter as defined in Schrijver, 2007 */
   //
   // Note that there is a restriction on the function fsample()
   // If the following occurs:
   //      nx_out > floor((ny_in-1)/scale + 1)
   //      ny_out > floor((ny_in-1)/scale + 1),
   // where n*_out are the dimensions of the output array and n*_in
   // are the dimensions of the input array, fsample() will usually result
   // in a segfault (though not always, depending on how the segfault was accessed.)
   
   int computeR(float *bz_err, float *los, int *dims, float *Rparam, float cdelt1,
                float *rim, float *p1p0, float *p1n0, float *p1p, float *p1n, float *p1,
                float *pmap, int nx1, int ny1)
   {
       int nx = dims[0];
       int ny = dims[1];
       int i = 0;
       int j = 0;
       int index;
       double sum = 0.0;
       double err = 0.0;
       *Rparam = 0.0;
       struct fresize_struct fresboxcar, fresgauss;
       int scale = round(2.0/cdelt1);
       float sigma = 10.0/2.3548;
   
       init_fresize_boxcar(&fresboxcar,1,1);
   
       // set up convolution kernel
       init_fresize_gaussian(&fresgauss,sigma,20,1);
   
       fsample(los, rim, nx, ny, nx, nx1, ny1, nx1, scale, 0, 0, 0.0);
   
       for (i = 0; i < nx1; i++)
       {
           for (j = 0; j < ny1; j++)
           {
               index = j * nx1 + i;
               if (rim[index] > 150)
                   p1p0[index]=1.0;
               else
                   p1p0[index]=0.0;
               if (rim[index] < -150)
                   p1n0[index]=1.0;
               else
                   p1n0[index]=0.0;
           }
       }
   
       fresize(&fresboxcar, p1p0, p1p, nx1, ny1, nx1, nx1, ny1, nx1, 0, 0, 0.0);
       fresize(&fresboxcar, p1n0, p1n, nx1, ny1, nx1, nx1, ny1, nx1, 0, 0, 0.0);
   
       for (i = 0; i < nx1; i++)
       {
           for (j = 0; j < ny1; j++)
           {
               index = j * nx1 + i;
               if (p1p[index] > 0 && p1n[index] > 0)
                   p1[index]=1.0;
               else
                   p1[index]=0.0;
           }
       }
   
       fresize(&fresgauss, p1, pmap, nx1, ny1, nx1, nx1, ny1, nx1, 0, 0, 0.0);
   
       for (i = 0; i < nx1; i++)
       {
           for (j = 0; j < ny1; j++)
           {
               index = j * nx1 + i;
               sum += pmap[index]*abs(rim[index]);
           }
       }
   
       if (sum < 1.0)
           *Rparam = 0.0;
       else
           *Rparam = log10(sum);
   
       free_fresize(&fresboxcar);
       free_fresize(&fresgauss);
   
       return 0;
   }
   
  
 /*==================KEIJI'S CODE =========================*/ /*==================KEIJI'S CODE =========================*/
  
Line 1153  void greenpot(float *bx, float *by, floa
Line 1241  void greenpot(float *bx, float *by, floa
  
 char *sw_functions_version() // Returns CVS version of sw_functions.c char *sw_functions_version() // Returns CVS version of sw_functions.c
 { {
   return strdup("$Id$");      return strdup("$Id");
 } }
  
 /* ---------------- end of this file ----------------*/ /* ---------------- end of this file ----------------*/


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  Added in v.1.29

Karen Tian
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