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