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GridWrite

Syntax
int GridWrite(int fid,struct GridData *grd);
Header
superdarn/gridwrite.h
Library
grid
Description

The GridWrite function writes gridded data to an open file.

The data is written to the file with the descriptor given by the argument fid.If fid is set to (-1) then the function will just calculate the number of bytes required to store the data.

The gridded data is taken from the structure pointed to by the argument grd.

Returns
Returns the number of bytes written on success. On error, (-1) is returned.
Errors
On error, (-1) is returned.
Example

Source Code: GridWrite.c

/* GridWrite.c
   ============
   Author: R.J.Barnes

Copyright (c) 2012 The Johns Hopkins University/Applied Physics Laboratory

This file is part of the Radar Software Toolkit (RST).

RST is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.

Modifications:


*/


#include <stdio.h>
#include <stdlib.h>

#include "rtypes.h"
#include "rtime.h"
#include "dmap.h"
#include "limit.h"
#include "griddata.h"
#include "gridread.h"
#include "gridwrite.h"

  struct GridData grd;


int main(int argc,char *argv[]) {
 
  FILE *fp;
  int fd;

  int yr,mo,dy,hr,mt;
  double sc;

  fp=fopen(argv[1],"r");

  if (fp==NULL) {
    fprintf(stderr,"File not found.'n");
    exit(-1);
  }

  fd=fileno(fp);

  while(GridRead(fd,&grd) !=-1) {

    TimeEpochToYMDHMS(grd.st_time,&yr,&mo,&dy,&hr,&mt,&sc);
    fprintf(stderr,"%.4d-%.2d-%.2d %.2d:%.2d:%.2d pnts=%d'n",
            yr,mo,dy,hr,mt,(int) sc,grd.vcnum);

    
    GridWrite(fileno(stdout),&grd);
    
  }
 
  fclose(fp);


  return 0;
}