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Re: high resolution coastlines
- Subject: Re: high resolution coastlines
- From: "Julie Greenwood" <julieg(at)NOSPAMoceanweather.com>
- Date: Tue, 22 Feb 2000 12:03:16 -0500
- Newsgroups: comp.lang.idl-pvwave
- Organization: Posted via Supernews, http://www.supernews.com
- References: <firstname.lastname@example.org> <950820600.235630@clam-55>
- Xref: news.doit.wisc.edu comp.lang.idl-pvwave:18550
Thanks for the pointer, Mark, and Liam too, vicariously.
For fun, here are some related links:
WVS Coastline Extractor: http://crusty.er.usgs.gov/coast/getcoast.html
Bathymetry Extractor: http://22.214.171.124/dbdbv/dbdbv.html
Juliet G. Greenwood
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Mark Hadfield <email@example.com> wrote in message
> Julie Greenwood <julieg@NOSPAMoceanweather.com> wrote in message
> > Hello Everybody
> > I wonder if anyone has adapted the World Vector Shoreline or something
> > similar for use with IDL. I find the 'hires' coastlines included with
> > to be deficient for my needs.
> Me too.
> Don't bother with the World Vector Shoreline, get the Global
> Self-consistent, Hierarchical, High-resolution Shoreline Database:
> It's a group of shoreline datasets at several different resolutions, based
> on WVS and other datasets, but cleaned up (intersecting segments removed
> I mentioned this on the group in December and got a reply from Liam Gumley
> who has done some work on reading & displaying this dataset. Part of his
> message is included below my signature.
> Mark Hadfield
> firstname.lastname@example.org http://katipo.niwa.cri.nz/~hadfield/
> National Institute for Water and Atmospheric Research
> PO Box 14-901, Wellington, New Zealand
> *** Excerpt of message from Liam Gumley ***
> I've played around with converting this dataset to IDL coastline format,
> because as you've noted, the IDL coastline data is not too flash. I've
> put the relevant files online, feel free to grab any or all of them:
> gshhs_frames.xdr -> a saved frame file that you can display with
> It shows the difference in quality between the IDL coastline and the
> GSHHS coastline data off the tip of Florida.
> gshhs_to_idl.pro -> a procedure for converting GSHHS format to IDL map
> map_con.pro -> a modified version of map_continents.pro which uses the
> coastline data derived from GSHHS. It works in quite a few cases, but in
> some cases it failed to draw the coastlines properly (I think Africa had
> some problems).
> phigh.dat, phigh.ndx -> GSHHS data converted to IDL format (used by