cdfstartstopfromdata.c
5.13 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
/* $Id: StartStopFromData.c,v 1.1 2010/08/31 10:32:55 budnik Exp $ */
/** @file StartStopFromData.c
* @brief
*/
#include <stdio.h>
#include <stdlib.h>
#include <cdf.h>
#include <string.h>
#include <time.h>
#include <math.h>
#define MAX_FILE_NAME_LEN 120
#define TIMESHIFT 62167219200.0
/*************************************
Global variables and structures
**************************************/
long CDFDims, // Number of dimensions in a CDF file
CDFVars, // Number of variables in a CDF file
CDFDimSizes[CDF_MAX_DIMS], // Dimension Sizes in a CDF file
CDFencoding, // Data encoding
CDFmajority, // Variable majority
CDFmaxRec, // max Record number
CDFAttrs; // number of CDF Attributes
// CDFdatatype;
struct cdfvar { // CDF variable structure
char name[CDF_VAR_NAME_LEN+1];
long num; //variable number
long datatype;
long numElem; // variable dimensionality
long recVariance; // variable rec Variance
long dimVariances[CDF_MAX_DIMS]; // # of data values in dimSizes
} cdfVar;
/*--------------------------------------------------------------------------
* Handles a CDF error.
*--------------------------------------------------------------------------*/
void cdf_handle_error(CDFstatus status)
{
char message[CDF_STATUSTEXT_LEN+1];
CDFerror (status, message); /* Get the appropriate message */
fprintf (stderr, "%s\n", message);
exit(1);
}
int main(int argc, char *argv[])
{
char fileName[MAX_FILE_NAME_LEN];
long RecStart = 0, RecCount, RecInt = 1;
long indices[1] = {0}, intervals[1] = {1}, counts[1] = {1};
long varN = -1;
long datatype = 0;
CDFstatus cstatus; // CDF status code
CDFid id;
double *value;
int i;
double epoch16[2], dbl_value, dbl_value_;
long year, month, day, hour, min, sec, msec, mksec, nsec, psec;
long long *int_value;
if (argc <= 1)
exit(0); /* CDF input file name not specified */
else
strcpy(fileName, argv[argc-1]); /* Get the input file name */
/*********************** Open CDF file *****************************/
if ((cstatus = CDFopen(fileName, &id)) != CDF_OK)
cdf_handle_error(cstatus);
/*********** treat all vars as zVars with eliminated false dimensionality and get Nrecs **********/
if ((cstatus = CDFlib(SELECT_, CDF_zMODE_, zMODEon2, NULL_)) != CDF_OK)
cdf_handle_error (cstatus);
while (datatype != CDF_EPOCH && datatype != CDF_EPOCH16 && datatype != CDF_TIME_TT2000) {
varN++;
if ((cstatus = CDFlib(SELECT_, zVAR_, varN,
GET_, zVAR_DATATYPE_, &datatype, NULL_)) != CDF_OK)
cdf_handle_error (cstatus);
}
if ((cstatus = CDFlib(SELECT_, zVAR_, varN,
GET_, zVAR_MAXREC_, &CDFmaxRec, NULL_)) != CDF_OK)
cdf_handle_error (cstatus);
// fprintf(stdout,"Max Recs %d\n", CDFmaxRec+1);
if (CDFmaxRec < 1) exit (0);
if ( datatype == CDF_TIME_TT2000 ) {
int_value = (long long *) malloc (sizeof(long long) * (CDFmaxRec+1));
/******************* Get Epoch *************************/
if ((cstatus = CDFlib (SELECT_,
zVAR_, varN,
zVAR_RECNUMBER_, RecStart,
zVAR_RECCOUNT_, CDFmaxRec+1,
zVAR_RECINTERVAL_, RecInt,
zVAR_DIMINDICES_, indices,
zVAR_DIMCOUNTS_, counts,
zVAR_DIMINTERVALS_, intervals,
GET_, zVAR_HYPERDATA_, int_value, NULL_)) != CDF_OK)
cdf_handle_error (cstatus);
dbl_value_ = CDF_TT2000_to_UTC_EPOCH(int_value[0]);
dbl_value = CDF_TT2000_to_UTC_EPOCH(int_value[CDFmaxRec]);
printf("%f %f\n", dbl_value_/1000.0-TIMESHIFT,dbl_value/1000.0-TIMESHIFT);
free(int_value);
}
else {
value = (double *)malloc(sizeof(double)* (CDFmaxRec+1)*((datatype == CDF_EPOCH16)+1));
/******************* Get Epoch *************************/
if ((cstatus = CDFlib (SELECT_,
zVAR_, varN,
zVAR_RECNUMBER_, RecStart,
zVAR_RECCOUNT_, CDFmaxRec+1,
zVAR_RECINTERVAL_, RecInt,
zVAR_DIMINDICES_, indices,
zVAR_DIMCOUNTS_, counts,
zVAR_DIMINTERVALS_, intervals,
GET_, zVAR_HYPERDATA_, value, NULL_)) != CDF_OK)
cdf_handle_error (cstatus);
if (datatype == CDF_EPOCH16) {
epoch16[0] = value[0];
epoch16[1] = value[1];
EPOCH16breakdown(epoch16, &year, &month, &day, &hour, &min, &sec, &msec, &mksec, &nsec, &psec);
value[0] = computeEPOCH(year, month, day, hour, min, sec, msec);
epoch16[0] = value[CDFmaxRec*2];
epoch16[1] = value[CDFmaxRec*2+1];
EPOCH16breakdown(epoch16, &year, &month, &day, &hour, &min, &sec, &msec, &mksec, &nsec, &psec);
value[CDFmaxRec] = computeEPOCH(year, month, day, hour, min, sec, msec);
}
printf("%f %f\n", value[0]/1000.0-TIMESHIFT, value[CDFmaxRec]/1000.0-TIMESHIFT);
free(value);
}
if ((cstatus = CDFlib(CLOSE_, CDF_, NULL_)) != CDF_OK)
cdf_handle_error (cstatus);
}