1GDALMDIMTRANSLATE(1) GDAL GDALMDIMTRANSLATE(1)
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6 gdalmdimtranslate - Converts multidimensional data between different
7 formats, and perform subsetting.
8
10 gdalmdimtranslate [--help-general] [-co "NAME=VALUE"]*
11 [-of format] [-array <array_spec>]*
12 [-group <group_spec>]*
13 [-subset <subset_spec>]*
14 [-scaleaxes <scaleaxes_spec>]*
15 [-oo NAME=VALUE]*
16 <src_filename> <dst_filename>
17
19 gdalmdimtranslate program converts multidimensional raster between dif‐
20 ferent formats, and/or can perform selective conversion of specific ar‐
21 rays and groups, and/or subsetting operations.
22 The following command line parameters can appear in any order.
24 -of <format>
26 Select the output format. This can be a format that supports
27 multidimensional output (such as raster.netcdf, vrt_multidimen‐
28 sional), or a "classic" 2D formats, if only one single 2D array
29 results of the other specified conversion operations. When this
30 option is not specified, the format is guessed when possible
31 from the extension of the destination filename.
32 -co <NAME=VALUE>
34 Many formats have one or more optional creation options that can
35 be used to control particulars about the file created.
36 The creation options available vary by format driver, and some
38 simple formats have no creation options at all. A list of op‐
39 tions supported for a format can be listed with the --formats
40 command line option but the documentation for the format is the
41 definitive source of information on driver creation options.
42 See raster_drivers format specific documentation for legal cre‐
43 ation options for each format.
44 Array-level creation options may be passed by prefixing them
46 with ARRAY:. See GDALGroup::CopyFrom() for further details re‐
47 garding such options.
48 -array <array_spec>
50 Instead of converting the whole dataset, select one array, and
51 possibly perform operations on it. This option can be specified
52 several times to operate on different arrays.
53 <array_spec> may be just an array name, potentially using a
55 fully qualified syntax (/group/subgroup/array_name). Or it can
56 be a combination of options with the syntax: name={src_ar‐
57 ray_name}[,dstname={dst_array_name}][,trans‐
58 pose=[{axis1},{axis2},...][,view={view_expr}]
59 [{axis1},{axis2},...] is the argument of GDALMDArray::Trans‐
61 pose(). For example, transpose=[1,0] switches the axis order of
62 a 2D array.
63 {view_expr} is the value of the viewExpr argument of GDALMDAr‐
65 ray::GetView()
66 When specifying a view_expr that performs a slicing or subset‐
68 ting on a dimension, the equivalent operation will be applied to
69 the corresponding indexing variable.
70 -group <group_spec>
72 Instead of converting the whole dataset, select one group, and
73 possibly perform operations on it. This option can be specified
74 several times to operate on different groups. If only one group
75 is specified, its content will be copied directly to the target
76 root group. If several ones are specified, they are copied under
77 the target root group
78 <group_spec> may be just a group name, potentially using a fully
80 qualified syntax (/group/subgroup/subsubgroup_name). Or it can
81 be a combination of options with the syntax:
82 name={src_group_name}[,dstname={dst_group_name}][,recursive=no]
83 -subset <subset_spec>
85 Performs a subsetting (trimming or slicing) operation along a
86 dimension, provided that it is indexed by a 1D variable of nu‐
87 meric or string data type, and whose values are monotically
88 sorted. <subset_spec> follows exactly the OGC WCS 2.0 KVP en‐
89 coding for subsetting.
90 That is dim_name(min_val,max_val) or dim_name(sliced_val) The
92 first syntax will subset the dimension dim_name to values in the
93 [min_val,max_val] range. The second syntax will slice the dimen‐
94 sion dim_name to value sliced_val (and this dimension will be
95 removed from the arrays that reference to it)
96 Using -subset is incompatible of specifying a view option in
98 -array.
99 -scaleaxes <scaleaxes_spec>
101 Applies a integral scale factor to one or several dimensions,
102 that is extract 1 value every N values (without resampling).
103 <scaleaxes_spec> follows exactly the syntax of the KVP encoding
105 of the SCALEAXES parameter of OGC WCS 2.0 Scaling Extension, but
106 limited to integer scale factors.
107 That is dim1_name(scale_factor)[,dim2_name(scale_factor)]*
109 Using -scaleaxes is incompatible of specifying a view option in
111 -array.
112 -oo <NAME=VALUE>
114 New in version 3.4.
115 Source dataset open option (format specific)
118 <src_dataset>
120 The source dataset name.
121 <dst_dataset>
123 The destination file name.
124
126 This utility is also callable from C with GDALMultiDimTranslate().
127
129 • Convert a netCDF file to a multidimensional VRT file
130 $ gdalmdimtranslate in.nc out.vrt
132 • Extract a 2D slice of a time,Y,X array
134 $ gdalmdimtranslate in.nc out.tif -subset 'time("2010-01-01")' -array temperature
136 • Subsample along X and Y axis
138 $ gdalmdimtranslate in.nc out.nc -scaleaxes "X(2),Y(2)"
140 • Reorder the values of a time,Y,X array along the Y axis from
142 top-to-bottom to bottom-to-top (or the reverse)
143 $ gdalmdimtranslate in.nc out.nc -array "name=temperature,view=[:,::-1,:]"
145 • Transpose an array that has X,Y,time dimension order to time,Y,X
147 $ gdalmdimtranslate in.nc out.nc -array "name=temperature,transpose=[2,1,0]"
149
151 Even Rouault <even.rouault@spatialys.com>
152
154 1998-2022
155 May 04, 2022 GDALMDIMTRANSLATE(1)