| Re: ESRI Shapefiles [message #49219 is a reply to message #49216] |
Thu, 06 July 2006 09:21  |
liamgumley
Messages: 74
Registered: June 2005
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Member |
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David,
The following demo program may be helpful:
ftp://ftp.ssec.wisc.edu/pub/incoming/shapefile_plot.pro
Here's how it can be used to plot a continent outline shapefile from
the IDL distribution:
file = filepath(subdirectory=['resource', 'maps', 'shape'],
'continents.shp')
map_set, 43.0, -89.0, scale=50e6, /lambert, /grid
shapefile_plot, file
Cheers,
Liam.
Practical IDL Programming
http://www.gumley.com/
David Bowman wrote:
> Dear all,
>
> I have an ESRI shapefile containing the surface trace of an active
> fault. I need to extract the lat/lon from this file for use in IDL.
> Sounds easy, right? Not so much... (at least for me)
>
> I know IDL includes a whole suite of programs that supposedly read and
> manipulate GIS files, but I've found the documentation to be shockingly
> confusing, even by RSI's standards.
>
> Can anybody point me to a simple explanation/procedure/resource? Small
> words would be appreciated.
>
> In my career there have been two enormous time-sinks that I've managed
> to avoid: ARC/Info and object-oriented programming. My greatest fear
> is that I've finally come across a need for both of them. I would be
> eternally grateful for any help avoiding that horrible fate.
>
> Cheers!
> David Bowman
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