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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 results. Mainly the extent is wrong with a cell size of 1,1 while in reality it should cover the entire world.

Update

After installing GMT and utilizing the source code

grd2xyz -Ef input.grd

the resulting ascii grid was converted to a tif format that was read by ArcGIS (ascii to raster). However again the final product does not have a correct extent showing a cellsize of 1,1. Could someone who perhaps is more familiar with GMT check the data above to check if it is viable to use within an ArcMap format?

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1 Answer 1

Try using this tool: http://www.ldeo.columbia.edu/res/pi/MB-System/

It can convert GMT grid to ascii, then you can use other software, like FME, to convert to esri grid. (Found this info in the following pdf, chapter 3.3.2: https://www.google.si/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CC4QFjAA&url=http%3A%2F%2Fwww.ngdc.noaa.gov%2Fdem%2FsquareCellGrid%2FgetReport%2F296&ei=wk7ZUN7WC47YsgbfiICIDg&usg=AFQjCNGtIdoQf6SuZAYt4wqr5hUPkR9TOQ&bvm=bv.1355534169,d.Yms)

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I have tried to convert between GMT to ascii and then converting to a tiff but the resulting extent is still not correct –  BJEBN Dec 30 '12 at 22:50
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