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bayesChires.c
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Wed, Dec 11, 12:51

bayesChires.c
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#include<stdio.h>
#include<signal.h>
#include<stdlib.h>
#include<math.h>
#include<string.h>
#include "dimension.h"
#include "structure.h"
#include "constant.h"
#include "fonction.h"
#include "bayesChires.h"
/******************************************************************************
* Name: bayes_chires.c
* Authors: EJ
* Date: 31/08/07
*
* Analyse a bayes.dat file and compute a chires.dat file for each line.
* Finally, it produces a mean chires.dat file from all individual chires.dat
* file.
*
* syntax : bayesChires <.par>
*
* The bayes.dat file in the current directory is used.
* Output : chires*.dat
*
******************************************************************************/
typedef void (*sighandler_t)(int);
static void signalReset();
int optInterrupt;
int main( int argc, char** argv )
{
double **array; // contains the bayes.dat data
int nParam;
long int nVal; // size of array
long int i, iVal;
char fname[50]; // chires<ival>.dat
long int *index; // list of bayes.dat lines
int seed; // random seed
long int tmp;
FILE *pFile;
// Check the arguments
if ( argc < 2 ||
strstr( argv[1], ".par" ) == NULL )
{
fprintf(stderr, "Syntax : bayes_chires <.par> [bayes.dat]\n");
return -1;
}
// Read the .par file
init_grille( argv[1], 1);
// Read the image file
readConstraints();
if ( G.nmsgrid != G.nlens )
{
prep_non_param();
}
// Read the bayes.dat file
array = readBayesModels(&nParam, &nVal);
if ( array == NULL )
{
fprintf(stderr, "ERROR: bayes.dat file not found\n");
return -1;
}
// Create the ./tmp directory
i = system("mkdir -p chires");
// Prepare the index list
index = (long int *) malloc((unsigned) nVal * sizeof(double));
for ( i = 0 ; i < nVal ; i++ ) index[i] = i;
seed = -2;
// Handle CTRL-C to interrupt the optimisation but not lenstool
signal(SIGINT, signalReset);
optInterrupt = 0;
// Loop over each line
for ( i = 0; i < nVal && !optInterrupt; i++ )
{
// Randomly draw a line from index array
tmp = (long int) floor(d_random(&seed) * (nVal - i));
iVal = index[i + tmp];
// and swap the indexes in the index list
index[i+tmp] = i;
// skip file is already processed
sprintf( fname, "chires/chires%ld.dat", iVal );
pFile = fopen(fname, "r");
if( pFile == NULL )
{
// Set the lens parameters from <array>
setBayesModel( iVal, nVal, array );
printf( "INFO: Compute the chires.dat file %ld/%ld [CTRL-C to interrupt]\r", i + 1, nVal);
fflush(stdout);
// Execute the chires() --> chires<iVal>.dat
o_chires(fname);
}
else
fclose(pFile);
}
printf( "\n" );
free( array );
return 0;
}
static void signalReset()
{
signal(SIGINT, SIG_DFL);
optInterrupt = 1;
printf( "\nINFO: Optimisation interrupted by CTRL-C\r");
}

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