![]() ![]() The format is identical to the WIND files created by g. PROJINFO contains the locations projection information PROJUNITS contains the locations map units definition DEFAULTWIND the default region (WINDow file). ecosystem services and environmental processes as part of ERAMMP and SOC-D. NOTE: see GRASS GIS 8 example above which is much easier Note: For Python3 support you need to use at least GRASS GIS 7.8. The first set of maps are geomorphons calculated using the default. Then we do a second reprojection with new automated vertex densification (here we use the default values for smax which is a 10km vertex distance in the reprojected map by default): v.proj box_latlong_10deg out=box_latlong_10deg_yes_densificationĮventually we can compare both reprojected maps: g.region vect=box_latlong_10deg_no_densificationĭ.vect box_latlong_10deg_no_densification color=redĭ. GIS Spatial Environmental Data Scientist. This dataset consists of two sets of geomorphon maps for all 67 counties of Pennsylvania. Now we first reproject the map the “traditional way” (no vertex densification as in most GIS, here enforced by smax=0): v.proj box_latlong_10deg out=box_latlong_10deg_no_densification Next we start GRASS GIS in a metric projection, here the EU LAEA: # EPSG 3035, metric EU LAEA: ![]() # generate the box according to current computational region: # for the ease of generating the box, set computational region: ExampleĪs an (extreme?) example, we generate a box in LatLong/WGS84 (EPSG: 4326) which is of 10 degree side length (see below for screenshot and at bottom for SHAPE file download of this “box” map): ~]$ grass70 ~/grassdata/latlong/grass7/ The needed improvement has been kindly added in v.proj by Markus Metz. My system is: System Info GRASS version: 6.4.4svn GRASS SVN Revision: 60122M GDAL/OGR: 1.10.1 PROJ4: Rel. At its core is an overlay analysis methodology. OGR interprets the string differently from PROJ.4 - internally it converts it to WKT format so I'm guessing that it requires the parameters to be specified, and because none are there it sets them to zero. This reduces the reprojection error for long lines (or polygon boundaries). I cannot reproduce the problem with 6.4.svn r60122.Screenshot attached. The SUSTAIN analysis is conducted within geographic information systems (GIS) software. This page details information about the Greene County Conservation District, its mission. How g.proj works is it uses OGR functions to parse and validate the PROJ.4 string before converting it into GRASS format. GRASS GIS 7 just got better: When reprojecting vector data, now automated vertex densification is applied.
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