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Diff for /JSOC/proj/sharp/apps/sw_functions.c between version 1.34 and 1.37

version 1.34, 2015/02/27 19:49:43 version 1.37, 2015/10/30 20:21:28
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 /*=========================================== /*===========================================
  
  The following 14 functions calculate the following spaceweather indices:  The following 14 functions calculate the following spaceweather indices:
Line 280  int computeBtotalderivative(float *bt, i
Line 281  int computeBtotalderivative(float *bt, i
         }         }
     }     }
  
       /* consider the edges for the arrays that contribute to the variable "sum" in the computation below.
     /* consider the edges */      ignore the edges for the error terms as those arrays have been initialized to zero.
       this is okay because the error term will ultimately not include the edge pixels as they are selected out by the mask and bitmask arrays.*/
     i=0;     i=0;
     for (j = 0; j <= ny-1; j++)     for (j = 0; j <= ny-1; j++)
     {     {
Line 374  int computeBhderivative(float *bh, float
Line 376  int computeBhderivative(float *bh, float
        }        }
     }     }
  
       /* consider the edges for the arrays that contribute to the variable "sum" in the computation below.
     /* consider the edges */      ignore the edges for the error terms as those arrays have been initialized to zero.
       this is okay because the error term will ultimately not include the edge pixels as they are selected out by the mask and bitmask arrays.*/
     i=0;     i=0;
     for (j = 0; j <= ny-1; j++)     for (j = 0; j <= ny-1; j++)
     {     {
Line 468  int computeBzderivative(float *bz, float
Line 471  int computeBzderivative(float *bz, float
     }     }
  
     /* consider the edges for the arrays that contribute to the variable "sum" in the computation below.     /* consider the edges for the arrays that contribute to the variable "sum" in the computation below.
     ignore the edges for err_termA and err_term B as those arrays have been initialized to zero.      ignore the edges for the error terms as those arrays have been initialized to zero.
     this is okay because the error term will ultimately not include the edge pixels as they are selected out by the mask and bitmask arrays.*/     this is okay because the error term will ultimately not include the edge pixels as they are selected out by the mask and bitmask arrays.*/
     i=0;     i=0;
     for (j = 0; j <= ny-1; j++)     for (j = 0; j <= ny-1; j++)
Line 595  int computeJz(float *bx_err, float *by_e
Line 598  int computeJz(float *bx_err, float *by_e
         }         }
     }     }
  
     // consider the edges      /* consider the edges for the arrays that contribute to the variable "sum" in the computation below.
       ignore the edges for the error terms as those arrays have been initialized to zero.
       this is okay because the error term will ultimately not include the edge pixels as they are selected out by the mask and bitmask arrays.*/
   
     i=0;     i=0;
     for (j = 0; j <= ny-1; j++)     for (j = 0; j <= ny-1; j++)
     {     {
         derx[j * nx + i]      = ( (-3*by[j * nx + i]) + (4*by[j * nx + (i+1)]) - (by[j * nx + (i+2)]) )*0.5;         derx[j * nx + i]      = ( (-3*by[j * nx + i]) + (4*by[j * nx + (i+1)]) - (by[j * nx + (i+2)]) )*0.5;
         err_term1[j * nx + i] = ( (3*by_err[j * nx + i])*(3*by_err[j * nx + i]) + (4*by_err[j * nx + (i+1)])*(4*by_err[j * nx + (i+1)]) + (by_err[j * nx + (i+2)])*(by_err[j * nx + (i+2)]) );  
     }     }
  
     i=nx-1;     i=nx-1;
     for (j = 0; j <= ny-1; j++)     for (j = 0; j <= ny-1; j++)
     {     {
         derx[j * nx + i]      = ( (3*by[j * nx + i]) + (-4*by[j * nx + (i-1)]) - (-by[j * nx + (i-2)]) )*0.5;         derx[j * nx + i]      = ( (3*by[j * nx + i]) + (-4*by[j * nx + (i-1)]) - (-by[j * nx + (i-2)]) )*0.5;
         err_term1[j * nx + i] = ( (3*by_err[j * nx + i])*(3*by_err[j * nx + i]) + (4*by_err[j * nx + (i+1)])*(4*by_err[j * nx + (i+1)]) + (by_err[j * nx + (i+2)])*(by_err[j * nx + (i+2)]) );  
     }     }
  
     j=0;     j=0;
     for (i = 0; i <= nx-1; i++)     for (i = 0; i <= nx-1; i++)
     {     {
         dery[j * nx + i]      = ( (-3*bx[j*nx + i]) + (4*bx[(j+1) * nx + i]) - (bx[(j+2) * nx + i]) )*0.5;         dery[j * nx + i]      = ( (-3*bx[j*nx + i]) + (4*bx[(j+1) * nx + i]) - (bx[(j+2) * nx + i]) )*0.5;
         err_term2[j * nx + i] = ( (3*bx_err[j*nx + i])*(3*bx_err[j*nx + i]) + (4*bx_err[(j+1) * nx + i])*(4*bx_err[(j+1) * nx + i]) + (bx_err[(j+2) * nx + i])*(bx_err[(j+2) * nx + i]) );  
     }     }
  
     j=ny-1;     j=ny-1;
     for (i = 0; i <= nx-1; i++)     for (i = 0; i <= nx-1; i++)
     {     {
         dery[j * nx + i]      = ( (3*bx[j * nx + i]) + (-4*bx[(j-1) * nx + i]) - (-bx[(j-2) * nx + i]) )*0.5;         dery[j * nx + i]      = ( (3*bx[j * nx + i]) + (-4*bx[(j-1) * nx + i]) - (-bx[(j-2) * nx + i]) )*0.5;
         err_term2[j * nx + i] = ( (3*bx_err[j*nx + i])*(3*bx_err[j*nx + i]) + (4*bx_err[(j+1) * nx + i])*(4*bx_err[(j+1) * nx + i]) + (bx_err[(j+2) * nx + i])*(bx_err[(j+2) * nx + i]) );  
   
     }     }
  
  
Line 830  int computeHelicity(float *jz_err, float
Line 831  int computeHelicity(float *jz_err, float
 /* Example function 12:  Sum of Absolute Value per polarity  */ /* Example function 12:  Sum of Absolute Value per polarity  */
  
 //  The Sum of the Absolute Value per polarity is defined as the following: //  The Sum of the Absolute Value per polarity is defined as the following:
 //  fabs(sum(jz gt 0)) + fabs(sum(jz lt 0)) and the units are in Amperes per arcsecond.  //  fabs(sum(jz gt 0)) + fabs(sum(jz lt 0)) and the units are in Amperes per square arcsecond.
 //  The units of jz are in G/pix. In this case, we would have the following: //  The units of jz are in G/pix. In this case, we would have the following:
 //  Jz = (Gauss/pix)(1/CDELT1)(0.00010)(1/MUNAUGHT)(RSUN_REF/RSUN_OBS)(RSUN_REF/RSUN_OBS)(RSUN_OBS/RSUN_REF), //  Jz = (Gauss/pix)(1/CDELT1)(0.00010)(1/MUNAUGHT)(RSUN_REF/RSUN_OBS)(RSUN_REF/RSUN_OBS)(RSUN_OBS/RSUN_REF),
 //     = (Gauss/pix)(1/CDELT1)(0.00010)(1/MUNAUGHT)(RSUN_REF/RSUN_OBS) //     = (Gauss/pix)(1/CDELT1)(0.00010)(1/MUNAUGHT)(RSUN_REF/RSUN_OBS)


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Karen Tian
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