nctimestring2double.c
4.41 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
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <netcdf.h>
#include <DD.h>
#define THIS_OK 1
#define UNKNOWN_TIME_FORMAT -100
/**************************
Function prototypes
**************************/
void handle_netcdf_error (int);
double ISO2Double(char *);
main(int argc, char **argv)
{
int ncID, timeID, newTimeID, ndims, dimids[NC_MAX_DIMS];
nc_type type;
size_t len, nrecs;
double *time_double;
char varname[NC_MAX_NAME];
int i, ii, j, status, nvars;
dd_time_t Time;
char IsoTime[24];
static size_t TimeStart[2] = {0L,0L};
static size_t TimeCount[2] = {1L,17L};
char SpecialSymbol[9] = {' ', '#', '%', '@', '+', '.', '>', '<', '-'};
if (argc <= 1) {
printf("Incorrect number of arguments\n");
exit(0);
}
/* open nc file to write */
if((status = nc_open(argv[1],NC_WRITE|NC_SHARE,&ncID)) != NC_NOERR){
printf("%d",status);
exit(0);
}
if ((status = nc_inq_varid(ncID, "Time", &timeID)) != NC_NOERR) {
timeID = 0;
}
if ((status = nc_inq_vartype(ncID, timeID, &type)) != NC_NOERR) {
printf("%d",status);
exit(0);
}
if (type == NC_DOUBLE) {
printf("%d", THIS_OK);
exit(0);
}
if (type != NC_CHAR) {
printf("%d", UNKNOWN_TIME_FORMAT);
exit(0);
}
if ((status = nc_inq_varndims(ncID, timeID, &ndims)) != NC_NOERR) {
printf("%d", status);
exit(0);
}
if ((status = nc_inq_vardimid(ncID, timeID, dimids)) != NC_NOERR){
printf("%d", status);
exit(0);
}
if ((status = nc_inq_dimlen(ncID,dimids[1], &len)) != NC_NOERR){
printf("%d", status);
exit(0);
}
if ((status = nc_inq_dimlen(ncID,dimids[0], &nrecs)) != NC_NOERR){
printf("%d", status);
exit(0);
}
//TODO all possible char formats
if (len != 17 && len != 23 && len != 24) {
printf("%d", UNKNOWN_TIME_FORMAT);
exit(0);
}
time_double = (double *)malloc(sizeof(double)*nrecs);
if (len == 17) {
for (i = 0; i < nrecs; i++) {
if ((status = nc_get_vara_text(ncID, timeID, TimeStart, TimeCount, Time)) != NC_NOERR){
printf("%d", status);
exit(0);
}
TimeStart[0]++;
time_double[i] = DD_Time2Double(Time);
}
}
else {
TimeCount[1] = len;
for (i = 0; i < nrecs; i++) {
if ((status = nc_get_vara_text(ncID, timeID, TimeStart, TimeCount, IsoTime)) != NC_NOERR){
printf("%d", status);
exit(0);
}
TimeStart[0]++;
time_double[i] = ISO2Double(IsoTime);
}
}
/* get info on number of variables */
status = nc_inq_nvars(ncID, &nvars);
status = nc_redef(ncID);
for (j = 0; j < nvars; j++) {
/* get the name of variable by its ID */
status = nc_inq_varname(ncID, j, varname);
/* Replace special symbols with underscore(s) */
for (ii = 0; ii < 9; ii++)
for (i = 0; i < strlen(varname); i++) {
if (varname[i] == SpecialSymbol[ii]) varname[i] = '_';
}
/* Rename the variable */
status = nc_rename_var(ncID, j, varname);
nc_sync(ncID);
}
status = nc_rename_var(ncID, timeID, "TimeString");
status = nc_def_var(ncID, "Time", NC_DOUBLE, 1, &dimids[0], &newTimeID);
status = nc_enddef(ncID);
status = nc_put_var_double(ncID,newTimeID,time_double);
nc_sync(ncID);
printf("%d", THIS_OK);
status = nc_close(ncID);
}
/*--------------------------------------------------------------------------
* Handles a netCDF error.
*--------------------------------------------------------------------------*/
void handle_netcdf_error(int status) {
fprintf(stderr, "%s\n", nc_strerror(status));
}
/*--------------------------------------------------------------------------
* ISO time to DD Double (UNIX)
* 2007-07-12T13:08:02.000
*--------------------------------------------------------------------------*/
double ISO2Double(char *IsoTime) {
dd_tmstr_t *Time;
int UT[7];
sscanf(IsoTime, "%d-%d-%dT%d:%d:%d.%d",
&UT[0],&UT[1],&UT[2],&UT[3],&UT[4],&UT[5],&UT[6]);
Time = (dd_tmstr_t *)UT2double(UT);
return Time->times;
}