This example belongs to the presentation made to the OSGeo local group in Barcelona Geoinquiets The example is an adaptation from Mike Bostock's Symbol Map example
This example belongs to the presentation made to the OSGeo local group in Barcelona Geoinquiets The example is an adaptation from Mike Bostock's Symbol Map example
This example belongs to the presentation made to the OSGeo local group in Barcelona Geoinquiets The example is an adaptation from Mike Bostock's Symbol Map example
This example belongs to the presentation made to the OSGeo local group in Barcelona Geoinquiets The example is an adaptation from Mike Bostock's Symbol Map example
This example belongs to the presentation made to the OSGeo local group in Barcelona Geoinquiets The example is an adaptation from Mike Bostock's Symbol Map example
Actualization This behaviour has been corrected and now the example is valid, since the points are ordered the same way in both projections.
From the mailing list:
OK, this has been fixed in release 3.1.4, so you'll no longer need the work-around described in my previous email. Enjoy, and thank you for the bug report!
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| license: cc-by-4.0 | |
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This example, inspired from Mike Bostock's Non-contiguous catrogram example, shows the percentage of people in Catalonia able to speak in Catalan in every comarca (data from IDESCAT).
But the Catalan population is not evenly distributed, but concentrated around Barcelona and surroundings. So comparing the region colors can lead to wrong conclusions, since they don't represent comparable amount of people.
When the Resize to population density button is pressed, the size of each coamrca is reduced according to its population density. The maximum density corresponds to the Barcelonès, which is not reduced. When the sizes are changed is much easier to compare the number of people.
The size is not reduced linearly, but applying the square root, because Catalonia is so unevenly populated that it was difficult so see anything outside Barcelona's region.
This example, inspired in this example by Gregor Aisch, shows the percentage of people in Catalonia able to speak in Catalan in every comarca (data from IDESCAT).
But the Catalan population is not evenly distributed, but concentrated around Barcelona and surroundings. So comparing the region colours can lead to wrong conclusions, since they don't represent comparable amount of people.
So the population density is represented by the dots: The dot area represents the amount of people in each comarca
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