Jaime E. Villate ?????:
> On Sat, 2007-06-16 at 10:42 +0200, Mario Rodriguez wrote:
>>> I wonder if it is possible using recently developed graphics code
>>> to make a world map and put national flags or other images on it
>>> to indicate the locations of Maxima developers & other interested
>>> parties. It could be something which is generated once or twice
>>> a year (doesn't have to updated on demand).
>
>> I have used Mathematica some years ago to represent spatio-temporal
>> data, drawing polygons as country boundaries (example attached). If
>> someone is interested, I can submit a copy of a document explaining
>> (in Spanish) how I did this.
>
> Hi,
> an easier approach is the one use by Debian and other projects: plot a
> bitmap image of the world, obtained by projecting together several
> satellite pictures, and on top of them write a list of points.
>
> When the feature of plotting a bitmap image as the background for a
> 2D plot is implemented in Maxima, we can do that. I don't know if
> the latest version of Gnuplot allows it, but it in Openmath It is one
> of the features I have in mind for future releases, because it would
> allow the dynamics package to show the Julia/Mandelbrot set rather than
> saving them to an image file.
>
> In the meantime, we must start by creating a list of geographical
> coordinates for Maxima developers. I only know the city where 2 of them
> live (Mario in Ferrol, Spain, and Juan Pablo in Bogot?, Colombia).
> By looking at e-mail message headers, I think that Barton Willis lives
> in Kearney, Nebrasca, and Raymond Toy in Lynchburg, Virginia. With other
> developers it is hard to guess. With those 4 people and my own
> coordinates, I have made a sample map that you can see at:
> http://fisica.fe.up.pt/maxima/map.php
> it is made by a very simple script that makes a table with an image of
> the earth as background, and then plots an image obtained with GD with
> transparent background and a diamond in each point given in a list.
> If somebody else wants to appear in that map, please tell me your
> coordinates (latitude, longitude) or the name of your hometown.
> Regards,
> Jaime
>
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Vadim V. Zhytnikov
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