1 /*
2 This file is part of CDO. CDO is a collection of Operators to manipulate and analyse Climate model Data.
3
4 Author: Uwe Schulzweida
5
6 */
7
8 /*
9 This module contains the following operators:
10
11 Enlarge enlarge Enlarge fields
12 */
13
14 #include <cdi.h>
15
16 #include "cdo_options.h"
17 #include "process_int.h"
18 #include "griddes.h"
19
20 void *
Enlarge(void * process)21 Enlarge(void *process)
22 {
23 bool linfo = true;
24
25 cdo_initialize(process);
26
27 operator_check_argc(1);
28
29 const auto gridID2 = cdo_define_grid(cdo_operator_argv(0));
30 const auto xsize2 = gridInqXsize(gridID2);
31 const auto ysize2 = gridInqYsize(gridID2);
32
33 if (Options::cdoVerbose) fprintf(stderr, "gridID2 %d, xsize2 %zu, ysize2 %zu\n", gridID2, xsize2, ysize2);
34
35 const auto streamID1 = cdo_open_read(0);
36
37 const auto vlistID1 = cdo_stream_inq_vlist(streamID1);
38 const auto vlistID2 = vlistDuplicate(vlistID1);
39
40 const auto taxisID1 = vlistInqTaxis(vlistID1);
41 const auto taxisID2 = taxisDuplicate(taxisID1);
42 vlistDefTaxis(vlistID2, taxisID2);
43
44 const auto gridsize2 = gridInqSize(gridID2);
45 if (gridsize2 < vlistGridsizeMax(vlistID1)) cdo_abort("Gridsize of input stream is greater than new gridsize!");
46
47 const auto ngrids = vlistNgrids(vlistID1);
48 for (int index = 0; index < ngrids; index++) vlistChangeGridIndex(vlistID2, index, gridID2);
49
50 const auto streamID2 = cdo_open_write(1);
51
52 cdo_def_vlist(streamID2, vlistID2);
53
54 Varray<double> array1(gridsize2), array2(gridsize2);
55
56 int tsID = 0;
57 while (true)
58 {
59 const auto nrecs = cdo_stream_inq_timestep(streamID1, tsID);
60 if (nrecs == 0) break;
61
62 cdo_taxis_copy_timestep(taxisID2, taxisID1);
63 cdo_def_timestep(streamID2, tsID);
64
65 for (int recID = 0; recID < nrecs; recID++)
66 {
67 int varID, levelID;
68 cdo_inq_record(streamID1, &varID, &levelID);
69 size_t nmiss;
70 cdo_read_record(streamID1, array1.data(), &nmiss);
71
72 const auto missval = vlistInqVarMissval(vlistID1, varID);
73 const auto gridID1 = vlistInqVarGrid(vlistID1, varID);
74 const auto gridsize1 = gridInqSize(gridID1);
75
76 auto xsize1 = gridInqXsize(gridID1);
77 auto ysize1 = gridInqYsize(gridID1);
78 if (xsize1 == 0) xsize1 = 1;
79 if (ysize1 == 0) ysize1 = 1;
80
81 if (xsize1 == 1 && ysize1 == ysize2 && xsize1 * ysize1 == gridsize1)
82 {
83 if (linfo)
84 {
85 cdo_print("Enlarge zonal");
86 linfo = false;
87 }
88
89 for (size_t iy = 0; iy < ysize2; iy++)
90 for (size_t ix = 0; ix < xsize2; ix++) array2[ix + iy * xsize2] = array1[iy];
91
92 if (nmiss) nmiss *= xsize2;
93 }
94 else if (ysize1 == 1 && xsize1 == xsize2 && xsize1 * ysize1 == gridsize1)
95 {
96 if (linfo)
97 {
98 cdo_print("Enlarge meridional");
99 linfo = false;
100 }
101
102 for (size_t iy = 0; iy < ysize2; iy++)
103 for (size_t ix = 0; ix < xsize2; ix++) array2[ix + iy * xsize2] = array1[ix];
104
105 if (nmiss) nmiss *= ysize2;
106 }
107 else
108 {
109 varray_copy(gridsize1, array1, array2);
110 for (size_t i = gridsize1; i < gridsize2; i++) array2[i] = array1[gridsize1 - 1];
111
112 if (nmiss && DBL_IS_EQUAL(array1[gridsize1 - 1], missval)) nmiss += (gridsize2 - gridsize1);
113 }
114
115 cdo_def_record(streamID2, varID, levelID);
116 cdo_write_record(streamID2, array2.data(), nmiss);
117 }
118
119 tsID++;
120 }
121
122 cdo_stream_close(streamID2);
123 cdo_stream_close(streamID1);
124
125 cdo_finish();
126
127 return nullptr;
128 }
129