Generic Mapping Tools (GMT) is an open source collection of about 80 command-line tools for manipulating geographic and Cartesian data sets (including filtering, trend fitting, gridding, projecting, etc.) and producing PostScript illustrations ranging from simple x–y plots via contour maps to ...

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3
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1answer
989 views

Converting GMT grid to ArcGIS readable format?

I am trying to convert a GMT grid data into a format that is readable in ArcGIS. I have already attempted to load the data into GRASS and use GDAL translate to convert into a tif with unwanted ...
2
votes
3answers
240 views

How to create custom color ramp using “r.colors” GRASS GIS function?

I am trying to assign a raster/grid a custom color palette in GRASS using the "r.colors" function. r.colors map=Consensus_BRT_RCP85 colors=rules This allows me to input my rules for my color ...
2
votes
1answer
389 views

shapefile to gmt format

I have an ESRI shapefile of the contours of my study area, and I want to convert it into a format that is acceptable by GMT, so I can make an elevation map of my study area. Is that even possible? ...
1
vote
1answer
33 views

Plot image on map based on corner coordinates

I have a color image and I know geographic coordinates of its 4 corners. Now I'd like to place this image on basemap in GMT using any projection. Any idea how to do that?
1
vote
1answer
31 views

GRID-file: get max extent for all z-values above given value

I have a GRID-file with a quite large extent. For an automatic workflow I need the maximum extent/bounding-box for all z-values that are over a certain range. For example: Get the maximum extent for ...
1
vote
0answers
43 views

How to Convert from GMT Line files to Shapfile for Qgis?

I have several line text-files of (used in GMT) saved in the format (this is a small sample): -111.29 42.28 -111.29 42.31 -111.29 42.33 > -111.37 41.99 -111.38 42.02 I am trying to convert this ...
1
vote
0answers
29 views

Creating tiling scheme to get multiple extents before gridding elevation data

Looking to create 1 degree by 1 degree tiles with pixel overlap to get extents before I start gridding. So basically I would like to have a shapefile of the tiling scheme with extents before having ...
0
votes
1answer
1k views

How to convert *.shp files to *.gmt format type files?

I am new at using GMT (Generic Mapping Tools) and I am wondering if it can use a shapefile of a hydrographical network. Can I perhaps change my .shp to .gmt format and combine it with a GMT map? If ...
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votes
0answers
18 views

Separating xyz files by location

I have thousands of large xyz files that I am trying to find a better way of separating into regions. Preferably in Linux, I would like to run a search and move based on either the latitude or ...
0
votes
0answers
84 views

.shp to GMT, fault lines appear connected

I used ogr2ogr to convert a .shp to GMT. Trying to plot fault lines, but when I plot the faults in GMT they all seem to be connected. The .shp data is in log/lat, which is what I want for the GMT ...
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votes
0answers
118 views

eTrex 10 UTC or GMT time zone

I have an eTrex 10. I'd like my GPS to remain in UTC (or GMT) time zone, but it does not offer this option as far as I can tell. I think "Western European" and "Ignore DST" is equivalent to GMT. Is ...