golem2grass.c

/*
** golem2grass: Converts a GOLEM output file to an ascii file in a format that
**              can be read by GRASS.
*/

#include <stdio.h>


/* CAUTION: This is the traditional K&R C (only) version of the Numerical
   Recipes utility file nrutil.c.  Do not confuse this file with the
   same-named file nrutil.c that is supplied in the 'misc' subdirectory.
   *That* file is the one from the book, and contains both ANSI and
   traditional K&R versions, along with #ifdef macros to select the
   correct version.  *This* file contains only traditional K&R.           */

#define NR_END 1
#define FREE_ARG char*

void nrerror(error_text)
char error_text[];
/* Numerical Recipes standard error handler */
{

	fprintf(stderr,"Numerical Recipes run-time error...\n");
	fprintf(stderr,"%s\n",error_text);
	fprintf(stderr,"...now exiting to system...\n");
	exit(1);
}

float *vector(nl,nh)
long nh,nl;
/* allocate a float vector with subscript range v[nl..nh] */
{
	float *v;

	v=(float *)malloc((unsigned int) ((nh-nl+1+NR_END)*sizeof(float)));
	if (!v) nrerror("allocation failure in vector()");
	return v-nl+NR_END;
}

int *ivector(nl,nh)
long nh,nl;
/* allocate an int vector with subscript range v[nl..nh] */
{
	int *v;

	v=(int *)malloc((unsigned int) ((nh-nl+1+NR_END)*sizeof(int)));
	if (!v) nrerror("allocation failure in ivector()");
	return v-nl+NR_END;
}

unsigned char *cvector(nl,nh)
long nh,nl;
/* allocate an unsigned char vector with subscript range v[nl..nh] */
{
	unsigned char *v;

	v=(unsigned char *)malloc((unsigned int) ((nh-nl+1+NR_END)*sizeof(unsigned char)));
	if (!v) nrerror("allocation failure in cvector()");
	return v-nl+NR_END;
}

unsigned long *lvector(nl,nh)
long nh,nl;
/* allocate an unsigned long vector with subscript range v[nl..nh] */
{
	unsigned long *v;

	v=(unsigned long *)malloc((unsigned int) ((nh-nl+1+NR_END)*sizeof(long)));
	if (!v) nrerror("allocation failure in lvector()");
	return v-nl+NR_END;
}

double *dvector(nl,nh)
long nh,nl;
/* allocate a double vector with subscript range v[nl..nh] */
{
	double *v;

	v=(double *)malloc((unsigned int) ((nh-nl+1+NR_END)*sizeof(double)));
	if (!v) nrerror("allocation failure in dvector()");
	return v-nl+NR_END;
}

float **matrix(nrl,nrh,ncl,nch)
long nch,ncl,nrh,nrl;
/* allocate a float matrix with subscript range m[nrl..nrh][ncl..nch] */
{
	long i, nrow=nrh-nrl+1,ncol=nch-ncl+1;
	float **m;

	/* allocate pointers to rows */
	m=(float **) malloc((unsigned int)((nrow+NR_END)*sizeof(float*)));
	if (!m) nrerror("allocation failure 1 in matrix()");
	m += NR_END;
	m -= nrl;

	/* allocate rows and set pointers to them */
	m[nrl]=(float *) malloc((unsigned int)((nrow*ncol+NR_END)*sizeof(float)));
	if (!m[nrl]) nrerror("allocation failure 2 in matrix()");
	m[nrl] += NR_END;
	m[nrl] -= ncl;

	for(i=nrl+1;i<=nrh;i++) m[i]=m[i-1]+ncol;

	/* return pointer to array of pointers to rows */
	return m;
}

double **dmatrix(nrl,nrh,ncl,nch)
long nch,ncl,nrh,nrl;
/* allocate a double matrix with subscript range m[nrl..nrh][ncl..nch] */
{
	long i, nrow=nrh-nrl+1,ncol=nch-ncl+1;
	double **m;

	/* allocate pointers to rows */
	m=(double **) malloc((unsigned int)((nrow+NR_END)*sizeof(double*)));
	if (!m) nrerror("allocation failure 1 in matrix()");
	m += NR_END;
	m -= nrl;

	/* allocate rows and set pointers to them */
	m[nrl]=(double *) malloc((unsigned int)((nrow*ncol+NR_END)*sizeof(double)));
	if (!m[nrl]) nrerror("allocation failure 2 in matrix()");
	m[nrl] += NR_END;
	m[nrl] -= ncl;

	for(i=nrl+1;i<=nrh;i++) m[i]=m[i-1]+ncol;

	/* return pointer to array of pointers to rows */
	return m;
}

int **imatrix(nrl,nrh,ncl,nch)
long nch,ncl,nrh,nrl;
/* allocate a int matrix with subscript range m[nrl..nrh][ncl..nch] */
{
	long i, nrow=nrh-nrl+1,ncol=nch-ncl+1;
	int **m;

	/* allocate pointers to rows */
	m=(int **) malloc((unsigned int)((nrow+NR_END)*sizeof(int*)));
	if (!m) nrerror("allocation failure 1 in matrix()");
	m += NR_END;
	m -= nrl;


	/* allocate rows and set pointers to them */
	m[nrl]=(int *) malloc((unsigned int)((nrow*ncol+NR_END)*sizeof(int)));
	if (!m[nrl]) nrerror("allocation failure 2 in matrix()");
	m[nrl] += NR_END;
	m[nrl] -= ncl;

	for(i=nrl+1;i<=nrh;i++) m[i]=m[i-1]+ncol;

	/* return pointer to array of pointers to rows */
	return m;
}

float **submatrix(a,oldrl,oldrh,oldcl,oldch,newrl,newcl)
float **a;
long newcl,newrl,oldch,oldcl,oldrh,oldrl;
/* point a submatrix [newrl..][newcl..] to a[oldrl..oldrh][oldcl..oldch] */
{
	long i,j,nrow=oldrh-oldrl+1,ncol=oldcl-newcl;
	float **m;

	/* allocate array of pointers to rows */
	m=(float **) malloc((unsigned int) ((nrow+NR_END)*sizeof(float*)));
	if (!m) nrerror("allocation failure in submatrix()");
	m += NR_END;
	m -= newrl;

	/* set pointers to rows */
	for(i=oldrl,j=newrl;i<=oldrh;i++,j++) m[j]=a[i]+ncol;

	/* return pointer to array of pointers to rows */
	return m;
}

float **convert_matrix(a,nrl,nrh,ncl,nch)
float *a;
long nch,ncl,nrh,nrl;
/* allocate a float matrix m[nrl..nrh][ncl..nch] that points to the matrix
declared in the standard C manner as a[nrow][ncol], where nrow=nrh-nrl+1
and ncol=nch-ncl+1. The routine should be called with the address
&a[0][0] as the first argument. */
{
	long i,j,nrow=nrh-nrl+1,ncol=nch-ncl+1;
	float **m;

	/* allocate pointers to rows */
	m=(float **) malloc((unsigned int) ((nrow+NR_END)*sizeof(float*)));
	if (!m) nrerror("allocation failure in convert_matrix()");
	m += NR_END;
	m -= nrl;

	/* set pointers to rows */
	m[nrl]=a-ncl;
	for(i=1,j=nrl+1;i<nrow;i++,j++) m[j]=m[j-1]+ncol;
	/* return pointer to array of pointers to rows */
	return m;
}

float ***f3tensor(nrl,nrh,ncl,nch,ndl,ndh)
long nch,ncl,ndh,ndl,nrh,nrl;
/* allocate a float 3tensor with range t[nrl..nrh][ncl..nch][ndl..ndh] */
{
	long i,j,nrow=nrh-nrl+1,ncol=nch-ncl+1,ndep=ndh-ndl+1;
	float ***t;

	/* allocate pointers to pointers to rows */
	t=(float ***) malloc((unsigned int)((nrow+NR_END)*sizeof(float**)));
	if (!t) nrerror("allocation failure 1 in f3tensor()");
	t += NR_END;
	t -= nrl;

	/* allocate pointers to rows and set pointers to them */
	t[nrl]=(float **) malloc((unsigned int)((nrow*ncol+NR_END)*sizeof(float*)));
	if (!t[nrl]) nrerror("allocation failure 2 in f3tensor()");
	t[nrl] += NR_END;
	t[nrl] -= ncl;

	/* allocate rows and set pointers to them */
	t[nrl][ncl]=(float *) malloc((unsigned int)((nrow*ncol*ndep+NR_END)*sizeof(float)));
	if (!t[nrl][ncl]) nrerror("allocation failure 3 in f3tensor()");
	t[nrl][ncl] += NR_END;
	t[nrl][ncl] -= ndl;

	for(j=ncl+1;j<=nch;j++) t[nrl][j]=t[nrl][j-1]+ndep;
	for(i=nrl+1;i<=nrh;i++) {
		t[i]=t[i-1]+ncol;
		t[i][ncl]=t[i-1][ncl]+ncol*ndep;
		for(j=ncl+1;j<=nch;j++) t[i][j]=t[i][j-1]+ndep;
	}

	/* return pointer to array of pointers to rows */
	return t;
}

void free_vector(v,nl,nh)
float *v;
long nh,nl;
/* free a float vector allocated with vector() */
{
	free((FREE_ARG) (v+nl-NR_END));
}

void free_ivector(v,nl,nh)
int *v;
long nh,nl;
/* free an int vector allocated with ivector() */
{
	free((FREE_ARG) (v+nl-NR_END));
}

void free_cvector(v,nl,nh)
long nh,nl;
unsigned char *v;
/* free an unsigned char vector allocated with cvector() */
{
	free((FREE_ARG) (v+nl-NR_END));
}

void free_lvector(v,nl,nh)
long nh,nl;
unsigned long *v;
/* free an unsigned long vector allocated with lvector() */
{
	free((FREE_ARG) (v+nl-NR_END));
}

void free_dvector(v,nl,nh)
double *v;
long nh,nl;
/* free a double vector allocated with dvector() */
{
	free((FREE_ARG) (v+nl-NR_END));
}

void free_matrix(m,nrl,nrh,ncl,nch)
float **m;
long nch,ncl,nrh,nrl;
/* free a float matrix allocated by matrix() */
{
	free((FREE_ARG) (m[nrl]+ncl-NR_END));
	free((FREE_ARG) (m+nrl-NR_END));
}

void free_dmatrix(m,nrl,nrh,ncl,nch)
double **m;
long nch,ncl,nrh,nrl;
/* free a double matrix allocated by dmatrix() */
{
	free((FREE_ARG) (m[nrl]+ncl-NR_END));
	free((FREE_ARG) (m+nrl-NR_END));
}

void free_imatrix(m,nrl,nrh,ncl,nch)
int **m;
long nch,ncl,nrh,nrl;
/* free an int matrix allocated by imatrix() */
{
	free((FREE_ARG) (m[nrl]+ncl-NR_END));
	free((FREE_ARG) (m+nrl-NR_END));
}

void free_submatrix(b,nrl,nrh,ncl,nch)
float **b;
long nch,ncl,nrh,nrl;
/* free a submatrix allocated by submatrix() */
{
	free((FREE_ARG) (b+nrl-NR_END));
}

void free_convert_matrix(b,nrl,nrh,ncl,nch)
float **b;
long nch,ncl,nrh,nrl;
/* free a matrix allocated by convert_matrix() */
{
	free((FREE_ARG) (b+nrl-NR_END));
}

void free_f3tensor(t,nrl,nrh,ncl,nch,ndl,ndh)
float ***t;
long nch,ncl,ndh,ndl,nrh,nrl;
/* free a float f3tensor allocated by f3tensor() */
{
	free((FREE_ARG) (t[nrl][ncl]+ndl-NR_END));
	free((FREE_ARG) (t[nrl]+ncl-NR_END));
	free((FREE_ARG) (t+nrl-NR_END));
}



void main( argc, argv )
int argc;
char **argv;
{
  float **dat;
  int nx,ny,i,j;
  float dx, maxtime, time;
  int readjustone=0;
  FILE *fp, *fpout;
  char timenm[80], outname[80];

  /* Check for correct number of command line arguments */
  if( argc<3 ) {
    printf("USAGE: %s <input file> <time step> [s=single time step only]\n",
            argv[0] );
    exit();
  }

  /* Open the file */
  if( (fp = fopen( argv[1], "r"))==NULL ) {
    printf("I can't find '%s'\n",argv[1]);
    exit();
  }

  /* Read the header info */
  fscanf( fp, "%d", &nx );
  fscanf( fp, "%d", &ny );
  fscanf( fp, "%f", &dx );

  /* Allocate memory */
  dat = matrix(0,nx-1,0,ny-1);

  /* Get the largest time step to read */
  maxtime = atoi( argv[2] );
  if( maxtime<0 || maxtime>=1e9 ) {
    printf("Invalid time step: %f ('%s')\n",maxtime, argv[2] );
    exit();
  }

  /* Check for the "read just one" option */
  if( argc==4 && argv[3][0]=='s' ) readjustone=1;

  /* Read each time step, and write to file */ 
  do {
    fgets( timenm, 20, fp );
    fgets( timenm, 20, fp );
    timenm[strlen(timenm)-1] = '\0';
    time = atoi( timenm );
    printf( "Reading time step %s\n", timenm );
    for( j=0; j<ny; j++ )
      for( i=0; i<nx; i++ )
        fscanf( fp, "%f", &dat[i][j] );
    if( !readjustone || time==maxtime ) {
      printf( "Writing time step.\n" );
      strcpy( outname, argv[1] );
      strcat( outname, "." );
      strcat( outname, &timenm[1] );
      fpout = fopen( outname, "w" );
      fprintf( fpout, "north:   %6.2f\n", dx*ny );
      fprintf( fpout, "south:   000000.00\n" );
      fprintf( fpout, "east:    %6.2f\n", dx*nx );
      fprintf( fpout, "west:    000000.00\n" );
      fprintf( fpout, "rows:    %d\n", ny );
      fprintf( fpout, "cols:    %d\n", nx );
      for( j=0; j<ny; j++ )
      {
        for( i=0; i<nx; i++ )
          fprintf( fpout, "%d ", (long)(dat[i][j]*100) );
        fprintf( fpout, "\n" );
      }
      fclose( fpout );
    }
  } while( time < maxtime ); 

}