[OSGeo-Discuss] Display of Multibeam data in open source gis

Brent Fraser bfraser at geoanalytic.com
Fri Jul 16 18:22:09 PDT 2010

You could use GDAL's ogr2ogr (I think it's packaged in FWTools) to convert
CSV (http://www.gdal.org/ogr/drv_csv.html) to a shapefile.  Or, depending
on what your plans are for the data, you may want to load the points into
PostGIS/Postgres for better performance, more flexibility in querying,

Best Regards,
Brent Fraser

> am in a quandry,
> have dense/large multibeam files i wish to display i a GIS for various
> purposes, essentially XYZ files, in DD WGS84 coordinates, ASCII
> tab-delimited or Mapinfo mid-mif formats, up to 10-million points plus in
> a datset.
> 1. have tried GVsig and quantumGIS, but neither seems to like the ascii
> tab-delimited format.
> 2. Quantum does not like the Mid-mif files i have, and it appears GVsig
> does not take the format
> Everything open-source GIS seems to want CSV or shapefiles.
> Am i missing an import step in either package which would  import these
> data in either format?
> IS there a mid to shape converter for point data that might solve my
> problem (I've tried FWtools)?
> am i exceeding the display capability of either/both packages?
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