Hi I am no expert here, but I was talking last week with someone who had just been on a GIS course. She made the interesting observation that when you are displaying numerical data as shaded regions on a map, you should not mix primary colours in the same gradated scale because what you end up with is sort of rubic cube kaleidoscope of colour rather than a clear gradation of values.
If that is good advice then I think our demo site could be improved as presently it seems like a good example of bad practice, where we have mixed red, green and blue with joyful and cheerful abandon :-) I had a go to change the Diarrhoea map on the dashboard at http://apps.dhis2.org/dev/dhis-web-dashboard-integration/index.action and I think it is true that it conveys the data better than the extreme multi-coloured ones around it. Even if the distribution of data between bands is not so interesting. Anyone agree or disagree? (the data will only be there for a short while longer) If there is a best practice to be had here regarding colour selection I guess we should promote it, particularly with default offerings so that people have to be quite deliberate in order to go astray. Bob
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