From: Alan W. Irwin <email@example.com>
To: Andrew Ross <firstname.lastname@example.org>
Cc: Hezekiah M. Carty <email@example.com>; "firstname.lastname@example.org" <email@example.com>; phil rosenberg <firstname.lastname@example.org>
Sent: Wednesday, 3 October 2012, 19:23
Subject: Re: [Plplot-devel] map resolution
On 2012-10-03 12:40+0100 Andrew Ross wrote:
> Certainly my take on this was that I was envisaging only using this
> support for behind the scenes improvements to plmap, not reproducing
> a general interface to shapelib / ogr / gdal etc. There is no point
> reproducing the wheel, particularly where things like shapelib have a
> pretty simple API anyway.
> I agree with Hez that all of this could be achieved already by the end
> user with the existing API (helped by a new plpolygons function). However,
> given we have plmap already and it adds some functionality in terms
> coordinate transformations I think we should limit ourselves to better
> supporting different map formats for plmap, at least for now.
> Being able to simple draw some stock map as a background for
> figure is useful (see Phil's examples) for scientific plotting. This
> is quite different though to producing high quality maps which is a
> job for a GIS and not plplot.
> I think this is what you were suggsting anyway isn't it?
Yes, I agree we should concentrate for now on better support for
different map formats for plmap as well as Hez's suggestions for
improved general polygon plotting functions.
> The idea of using raster maps as a background for a plot is
> interesting. I don't see why we couldn't implement an example of this
> using the current plimagefr function anyway. This could be a very
> pretty example of the kind of thing one can achieve with plplot. Just
> needs a copyright free raster map as the backdrop.
I agree this is a good idea.
Alan W. Irwin
Astronomical research affiliation with
Department of Physics and Astronomy,
University of Victoria (astrowww.phys.uvic.ca).
Programming affiliations with the FreeEOS equation-of-state
implementation for stellar interiors (freeeos.sf.net); the Time
Ephemerides project (timeephem.sf.net); PLplot scientific plotting
software package (plplot.sf.net); the libLASi project
(unifont.org/lasi); the Loads of Linux Links project (loll.sf.net);
and the Linux Brochure Project (lbproject.sf.net).