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UsesCase_MEDfield_13.c
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1 /* This file is part of MED.
2  *
3  * COPYRIGHT (C) 1999 - 2021 EDF R&D, CEA/DEN
4  * MED is free software: you can redistribute it and/or modify
5  * it under the terms of the GNU Lesser General Public License as published by
6  * the Free Software Foundation, either version 3 of the License, or
7  * (at your option) any later version.
8  *
9  * MED is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public License
15  * along with MED. If not, see <http://www.gnu.org/licenses/>.
16  */
17 
18 /*
19  * Field use case 13 : write a field on nodes elements in a MED file
20  */
21 
22 #include <med.h>
23 #define MESGERR 1
24 #include <med_utils.h>
25 
26 #include <string.h>
27 
28 
29 int main (int argc, char **argv) {
30  med_idt fid;
31  const char meshname[MED_NAME_SIZE+1] = "2D unstructured mesh";
32  const char fieldname[MED_NAME_SIZE+1] = "TEMPERATURE_FIELD";
33  const med_int ncomponent = 1;
34  const char componentname[MED_SNAME_SIZE+1] = "TEMPERATURE";
35  const char componentunit[MED_SNAME_SIZE+1] = "C";
36  const med_int nquad4 = 4;
37  const med_float quad4values_step1[4*4] = { 10000., 20000., 30000., 40000.,
38  50000., 60000., 70000., 80000.,
39  90000., 100000., 110000., 120000.,
40  130000., 140000., 150000., 160000. };
41  const med_float quad4values_step2[4*4] = { 100., 200., 300., 400.,
42  500., 600., 700., 800.,
43  900., 1000., 1100., 1200.,
44  1300., 1400., 1500., 1600. };
45  int ret=-1;
46 
47  /* file creation */
48  fid = MEDfileOpen("UsesCase_MEDfield_13.med",MED_ACC_CREAT);
49  if (fid < 0) {
50  MESSAGE("ERROR : file creation ...");
51  goto ERROR;
52  }
53 
54  /* create mesh link */
55  if (MEDlinkWr(fid,meshname,"./UsesCase_MEDmesh_1.med") < 0) {
56  MESSAGE("ERROR : create mesh link ...");
57  goto ERROR;
58  }
59 
60  /*
61  * Temperature field creation :
62  * - 1 component
63  * - component unit : celsius degree
64  * - mesh is the 2D unstructured mesh of UsecaseMEDmesh_1.c use case.
65  * - computation step unit in 'ms'
66  */
67  if (MEDfieldCr(fid, fieldname, MED_FLOAT64,
68  ncomponent, componentname, componentunit,
69  "ms", meshname) < 0) {
70  MESSAGE("ERROR : create field");
71  goto ERROR;
72  }
73 
74  /* two computation steps */
75  /* write values at nodes elements : 4 MED_QUAD4 */
76 
77  /* STEP 1 : dt1 = 5.5, it = 1*/
78  /* MED_QUAD4 : with no profile */
79  if (MEDfieldValueWithProfileWr(fid, fieldname, 1, 1, 5.5, MED_NODE_ELEMENT, MED_QUAD4,
82  nquad4, (unsigned char*) quad4values_step1) < 0) {
83  MESSAGE("ERROR : write field values on MED_QUAD4 ");
84  goto ERROR;
85  }
86 
87  /* STEP 2 : dt2 = 8.9, it = 1*/
88  /* MED_QUAD4 : with no profile */
89  if (MEDfieldValueWithProfileWr(fid, fieldname, 2, 1, 8.9, MED_NODE_ELEMENT, MED_QUAD4,
92  nquad4, (unsigned char*) quad4values_step2) < 0) {
93  MESSAGE("ERROR : write field values on MED_QUAD4 ... ");
94  goto ERROR;
95  }
96 
97  ret=0;
98  ERROR:
99 
100  /* close file */
101  if (MEDfileClose(fid) < 0) {
102  MESSAGE("ERROR : close file ...");
103  ret=-1;
104  }
105 
106  return ret;
107 }
108 
MEDfieldCr
MEDC_EXPORT med_err MEDfieldCr(const med_idt fid, const char *const fieldname, const med_field_type fieldtype, const med_int ncomponent, const char *const componentname, const char *const componentunit, const char *const dtunit, const char *const meshname)
Cette fonction crée un champ dans un fichier.
Definition: MEDfieldCr.c:44
MED_FULL_INTERLACE
Definition: med.h:96
main
int main(int argc, char **argv)
Definition: UsesCase_MEDfield_13.c:29
MEDfileOpen
MEDC_EXPORT med_idt MEDfileOpen(const char *const filename, const med_access_mode accessmode)
Ouverture d'un fichier MED.
Definition: MEDfileOpen.c:42
MED_SNAME_SIZE
#define MED_SNAME_SIZE
Definition: med.h:82
med_idt
hid_t med_idt
Definition: med.h:331
MED_NO_LOCALIZATION
#define MED_NO_LOCALIZATION
Definition: med.h:275
MESSAGE
#define MESSAGE(chaine)
Definition: med_utils.h:324
MEDlinkWr
MEDC_EXPORT med_err MEDlinkWr(const med_idt fid, const char *const meshname, const char *const link)
Cette routine permet d'écrire un lien dans un fichier MED.
Definition: MEDlinkWr.c:36
med_int
int med_int
Definition: med.h:342
med.h
med_float
double med_float
Definition: med.h:336
MED_ACC_CREAT
Definition: med.h:123
MED_NAME_SIZE
#define MED_NAME_SIZE
Definition: med.h:81
MEDfileClose
MEDC_EXPORT med_err MEDfileClose(med_idt fid)
Fermeture d'un fichier MED.
Definition: MEDfileClose.c:30
MED_ALL_CONSTITUENT
#define MED_ALL_CONSTITUENT
Definition: med.h:299
MEDfieldValueWithProfileWr
MEDC_EXPORT med_err MEDfieldValueWithProfileWr(const med_idt fid, const char *const fieldname, const med_int numdt, const med_int numit, const med_float dt, const med_entity_type entitype, const med_geometry_type geotype, const med_storage_mode storagemode, const char *const profilename, const char *const localizationname, const med_switch_mode switchmode, const med_int componentselect, const med_int nentity, const unsigned char *const value)
Cette fonction permet d'écrire les valeurs d'un champ définies sur des entités d'un maillage pour une...
Definition: MEDfieldValueWithProfileWr.c:48
MED_COMPACT_STMODE
Definition: med.h:110
MED_NO_PROFILE
#define MED_NO_PROFILE
Definition: med.h:281
MED_FLOAT64
Definition: med.h:166
med_utils.h
MED_QUAD4
#define MED_QUAD4
Definition: med.h:204
MED_NODE_ELEMENT
Definition: med.h:144