Re: Plot a map of Europe

[Francesco Potortì]

>I have searched the internet, but not found a real "how to" instruction on
>how to plot a map of for example Europe and add a contour on top. I need to
>know the packages to install and where I can find map data in a format
>accepted by OCTAVE. I really needs an idiots guide to plotting maps in
>OCTAVE.

Generally speaking, you can draw a plot on top of any background image.
The general way to do so is something like

    map = imread(mapfile);
    image(map);
    axis('image', 'off', 'nolabel');
    hold on
    plot(x, y);

x and y should use the same measure of unit as the map, that is, pixels.

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