I would like to add support for loading segmented colors scales with plspal1, using plscmap1a rather than plscmap1la. This way, the colors would be separated by distinct cut-offs rather than continuous transitions. See the color bar used by the US National Weather Service radar images as an example:
http://radar.weather.gov/ridge/radar.php?rid=lsx&product=N0R&overlay=11101111&loop=no This is a fairly straightforward change, and I have prepared it locally. However, two approaches seem reasonable to me and I would like to as for others' opinions before settling on one. The first, and the one I have implemented, is a new file format. Rather than a "v2" header, this one has a "v2s" header (s = segmented). No reverse field is needed, as it is not applicable here. This format is otherwise the same as the existing v2 format. The second option I thought of after implementing the v2s file format code is to change the plspal1 API to take a second argument to determine if the file should be interpreted as discrete values or interpolation points. Something similar to "plspal1(filename, true)" for an interpolated color map and "plspal1(filename, false)" for a segmented color map. I like the second option more because the same color palette files can potentially be used for multiple purposes. It does, however, require a small API change to plspal1 (adding a PLBOOL parameter) which would then have to be propagated to all the language bindings. Any thoughts? I understand that this is rather poor timing, given the number of "added plspaln to language X bindings" Subversion commits there have been recently. This has unfortunately been my first chance to dig in to this section of code and see how it works. Hez -- Hezekiah M. Carty Graduate Research Assistant University of Maryland Department of Atmospheric and Oceanic Science ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
