gdb-add-index – Add index files to speed up GDB Synopsisgdb-add-index filename DescriptionWhen GDB finds a symbol file, it scans the symbols in the file in order to construct an internal symbol table. This lets most GDB operations work quickly—at the cost of a delay early on. For large programs, this delay can be quite lengthy,…
gdalwarp – gdalwarp image reprojection and warping utility Synopsisgdalwarp [–help-general] [–formats] [-s_srs srs_def] [-t_srs srs_def] [-to "NAME=VALUE"] [-order n | -tps | -rpc | -geoloc] [-et err_threshold] [-refine_gcps tolerance [minimum_gcps]] [-te xmin ymin xmax ymax] [-tr xres yres] [-tap] [-ts width height] [-wo "NAME=VALUE"] [-ot Byte/Int16/…] [-wt Byte/Int16] [-srcnodata "value [value…]"] [-dstnodata "value [value…]"] -dstalpha…
gdaltransform – gdaltransform transforms coordinates Synopsisgdaltransform [–help-general] [-i] [-s_srs srs_def] [-t_srs srs_def] [-to "NAME=VALUE"] [-order n] [-tps] [-rpc] [-geoloc] [-gcp pixel line easting northing [elevation]]* [srcfile [dstfile]]DescriptionThe gdaltransform utility reprojects a list of coordinates into any supported projection,including GCP-based transformations. -s_srs srs def: source spatial reference set. The coordinate systems that can be passed are…
gdaltindex – gdaltindex Builds a shapefile as a raster tileindex Synopsisgdaltindex [-f format] [-tileindex field_name] [-write_absolute_path] [-skip_different_projection] [-t_srs target_srs] [-src_srs_name field_name] [-src_srs_format [AUTO|WKT|EPSG|PROJ] [-lyr_name name] index_file [gdal_file]*DescriptionThis program builds a shapefile with a record for each input raster file, an attribute containing the filename, and a polygon geometry outlining the raster. This output is suitable…
gdalsrsinfo – gdalsrsinfo lists info about a given SRS in number of formats (WKT, PROJ.4, etc.) SynopsisUsage: gdalsrsinfo [options] srs_def srs_def may be the filename of a dataset supported by GDAL/OGR from which to extract SRS information OR any of the usual GDAL/OGR forms (complete WKT, PROJ.4, EPSG:n or a file containing the SRS) Options:…
gdalmove – gdalmove.py Transform georeferencing of raster file in place Synopsisgdalmove.py [-s_srs <srs_defn>] -t_srs <srs_defn> [-et <max_pixel_err>] target_fileDescriptionThe gdalmove.py script transforms the bounds of a raster file from one coordinate system to another, and then updates the coordinate system and geotransform of the file. This is done without altering pixel values at all. It is…
gdalmanage – gdalmanage Identify, delete, rename and copy raster data files SynopsisUsage: gdalmanage mode [-r] [-u] [-f format] datasetname [newdatasetname]DescriptionThe gdalmanage program can perform various operations on raster data files, depending on the chosen mode. This includes identifying raster data types and deleting, renaming or copying the files. mode: Mode of operation identify datasetname: List…
gdallocationinfo – gdallocationinfo raster query tool SynopsisUsage: gdallocationinfo [–help-general] [-xml] [-lifonly] [-valonly] [-b band]* [-overview overview_level] [-l_srs srs_def] [-geoloc] [-wgs84] srcfile [x y]DescriptionThe gdallocationinfo utility provide a mechanism to query information about a pixel given it’s location in one of a variety of coordinate systems. Several reporting options are provided. -xml: The output report will…
gdalinfo – gdalinfo lists information about a raster dataset Synopsisgdalinfo [–help-general] [-mm] [-stats] [-hist] [-nogcp] [-nomd] [-norat] [-noct] [-nofl] [-checksum] [-proj4] [-listmdd] [-mdd domain|`all`]* [-sd subdataset] datasetnameDescriptionThe gdalinfo program lists various information about a GDAL supported raster dataset. -mm Force computation of the actual min/max values for each band in the dataset. -stats Read and…
gdaldem – gdaldem Tools to analyze and visualize DEMs. (since GDAL 1.7.0) Synopsis– To generate a shaded relief map from any GDAL-supported elevation raster : gdaldem hillshade input_dem output_hillshade [-z ZFactor (default=1)] [-s scale* (default=1)]" [-az Azimuth (default=315)] [-alt Altitude (default=45)] [-alg ZevenbergenThorne] [-combined] [-compute_edges] [-b Band (default=1)] [-of format] [-co "NAME=VALUE"]* [-q] – To…
gdalcompare – gdalcompare.py compare two images Synopsisgdalcompare.py [-sds] golden_file new_fileDescriptionThe gdalcompare.py script compares two GDAL supported datasets and reports the differences. In addition to reporting differences to the standard out the script will also return the difference count in it’s exit value. Image pixels, and various metadata are checked. There is also a byte by…
gdalbuildvrt – gdalbuildvrt Builds a VRT from a list of datasets. (compiled by default since GDAL 1.6.1) Synopsisgdalbuildvrt [-tileindex field_name] [-resolution {highest|lowest|average|user}] [-te xmin ymin xmax ymax] [-tr xres yres] [-tap] [-separate] [-b band] [-sd subdataset] [-allow_projection_difference] [-q] [-addalpha] [-hidenodata] [-srcnodata "value [value…]"] [-vrtnodata "value [value…]"] [-a_srs srs_def] [-input_file_list my_liste.txt] [-overwrite] output.vrt [gdalfile]*DescriptionThis program builds…
gdaladdo – gdaladdo builds or rebuilds overview images Synopsisgdaladdo [-r {nearest,average,gauss,cubic,average_mp,average_magphase,mode}] [-b band] [-ro] [-clean] [–help-general] filename levelsDescriptionThe gdaladdo utility can be used to build or rebuild overview images for most supported file formats with one of several downsampling algorithms. -r {nearest (default),average,gauss,cubic,average_mp,average_magphase,mode}: Select a resampling algorithm. -b band: (available from GDAL 1.10) Select an…
gdal_utilities – GDAL Utilities The following utility programs are distributed with GDAL. • gdalinfo – report information about a file. • gdal_translate – Copy a raster file, with control of output format. • gdaladdo – Add overviews to a file. • gdalwarp – Warp an image into a new coordinate system. • gdaltindex – Build…
gdal_translate – gdal_translate converts raster data between different formats Synopsisgdal_translate [–help-general] [-ot {Byte/Int16/UInt16/UInt32/Int32/Float32/Float64/ CInt16/CInt32/CFloat32/CFloat64}] [-strict] [-of format] [-b band] [-mask band] [-expand {gray|rgb|rgba}] [-outsize xsize[%] ysize[%]] [-unscale] [-scale[_bn] [src_min src_max [dst_min dst_max]]]* [-exponent[_bn] exp_val]* [-srcwin xoff yoff xsize ysize] [-projwin ulx uly lrx lry] [-epo] [-eco] [-a_srs srs_def] [-a_ullr ulx uly lrx lry] [-a_nodata value]…
gdal_sieve – gdal_sieve.py removes small raster polygons Synopsisgdal_sieve.py [-q] [-st threshold] [-4] [-8] [-o name=value] srcfile [-nomask] [-mask filename] [-of format] [dstfile]DescriptionThe gdal_sieve.py script removes raster polygons smaller than a provided threshold size (in pixels) and replaces replaces them with the pixel value of the largest neighbour polygon. The result can be written back to…
gdal_retile – gdal_retile.py gdal_retile.py retiles a set of tiles and/or build tiled pyramid levels Synopsisgdal_retile.py [-v] [-co NAME=VALUE]* [-of out_format] [-ps pixelWidth pixelHeight] [-ot {Byte/Int16/UInt16/UInt32/Int32/Float32/Float64/ CInt16/CInt32/CFloat32/CFloat64}]’ [ -tileIndex tileIndexName [-tileIndexField tileIndexFieldName]] [ -csv fileName [-csvDelim delimiter]] [-s_srs srs_def] [-pyramidOnly] [-r {near/bilinear/cubic/cubicspline/lanczos}] -levels numberoflevels [-useDirForEachRow] -targetDir TileDirectory input_files.fiDescriptionThis utility will retile a set of input tile(s)….
gdal_rasterize – gdal_rasterize burns vector geometries into a raster SynopsisUsage: gdal_rasterize [-b band]* [-i] [-at] [-burn value]* | [-a attribute_name] [-3d] [-l layername]* [-where expression] [-sql select_statement] [-of format] [-a_srs srs_def] [-co "NAME=VALUE"]* [-a_nodata value] [-init value]* [-te xmin ymin xmax ymax] [-tr xres yres] [-tap] [-ts width height] [-ot {Byte/Int16/UInt16/UInt32/Int32/Float32/Float64/ CInt16/CInt32/CFloat32/CFloat64}] [-q] <src_datasource> <dst_filename>DescriptionThis…
gdal_proximity – gdal_proximity.py produces a raster proximity map Synopsisgdal_proximity.py srcfile dstfile [-srcband n] [-dstband n] [-of format] [-co name=value]* [-ot Byte/Int16/Int32/Float32/etc] [-values n,n,n] [-distunits PIXEL/GEO] [-maxdist n] [-nodata n] [-fixed-buf-val n]DescriptionThe gdal_proximity.py script generates a raster proximity map indicating the distance from the center of each pixel to the center of the nearest pixel identified…
gdal_polygonize – gdal_polygonize.py produces a polygon feature layer from a raster Synopsisgdal_polygonize.py [-8] [-nomask] [-mask filename] raster_file [-b band] [-q] [-f ogr_format] out_file [layer] [fieldname]DescriptionThis utility creates vector polygons for all connected regions of pixels in the raster sharing a common pixel value. Each polygon is created with an attribute indicating the pixel value of…