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SmrSeek

Syntax
int SmrSeek(FILE *fp, int yr,int mo,int dy,int hr,int mt,int sc,double *atme);
Header
superdarn/smrseek.h
Library
smr
Description

The SmrSeek function searches for a summary data record for a specific time.

The search is performed on the open stream pointed to by the argument fp. The time to search for is specified by the arguments yr, mo,dy,hr,mt,sc giving the year, month, day, hour, minute and second.

The argument atme is a pointer to a double precision floating point number that is used to store the time of the closest record to the time requested expressed in seconds from 0:00UT January 1, 1970. If this argument is set to a NULL pointer then the time is not returned.

If the fitacf file has an associated index that has been loaded, then it can be used to speed up the search by setting the argument inx to point to it.

Returns
Returns zero on success. On error, (-1) is returned.
Errors
On error, (-1) is returned.
Example

Source Code: SmrSeek.c

/* SmrSeek.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 "limit.h"
#include "rprm.h"
#include "fitdata.h"
#include "smrread.h"
#include "smrseek.h"

int main(int argc,char *argv[]) {
 
  FILE *fp;
  int bmnum=8;
  int s;

  struct RadarParm prm;
  struct FitData fit;
  int yr=2004,mo=11,dy=10,hr=10,mt=0;
  double sc=0,atme;


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

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



  s=SmrSeek(fp,yr,mo,dy,hr,mt,(int) sc,&atme);
  if (s==-1) {
    fprintf(stderr,"file does not contain that interval.'n");
    exit(-1);
  }

  fprintf(stdout,"Requested:%.4d-%.2d-%.2d %.2d:%.2d:%.2d'n",
            yr,mo,dy,hr,mt,(int) sc);

  TimeEpochToYMDHMS(atme,&yr,&mo,&dy,&hr,&mt,&sc);
  fprintf(stdout,"Found:%.4d-%.2d-%.2d %.2d:%.2d:%.2d'n",
            yr,mo,dy,hr,mt,(int) sc);

  while(SmrFread(fp,&prm,&fit,bmnum) !=-1) {
    fprintf(stdout,"%.4d-%.2d-%.2d %.2d:%.2d:%.2d'n",
             prm.time.yr,prm.time.mo,prm.time.dy,
             prm.time.hr,prm.time.mt,prm.time.sc);


  }
 
  fclose(fp);


  return 0;
}