Re: geographic plotting

[Manfred S. <man...@gm...>]

>
> This may be putting the cart before the horse, but...
> Do you think it would be helpful to teach gnuplot to read shape files?
> I imagine it would be possible to test for the presence of shapelib.so
> and provide a binary input mode:
>
>    splot <data> binary filetype=shapelib  with polygons
>
> I have never worked with this libary so I don't know if it is organized
> in such a way that this would be possible.


I do it using the gdal software and some shell magic:
  # ogr2ogr -f "GMT" gaga.gmt gaga.shp
  # grep -v "^#" gaga.gmt | sed 's/>//' > gaga.txt

HTH,
Manfred


>
> A quick look at the spec for the shapefile format makes it look horrible
> (mixed little-ending big-endian in the same file?! variable record types
> that are required not to vary?!),  but if it is hidden by a usable library ....
>
> 	Ethan
>
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