3. Comparison of choropleth maps

Compare spatial variations of "Part of old people (%) in total population", and "National product per capita"
The system provides simultaneous zooming of the maps to simplify comparison: both maps always show the same territory fragment.
When you lock the sliders together, the corresponding reference values have the same relative positions between the minimums and maximums of the corresponding attributes.

This applet is designed to work with version 4.0 or later of Netscape Communicator or Internet Explorer

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