[MapProxy] more opacity questions
DeDuikertjes at xs4all.nl
Sat Jan 7 14:27:26 EST 2012
Here you can find some example images in different shades of black-opaque:
At the moment I cannot reproduce the white-opaque images.
Op 7-1-2012 18:10, Jeffrey Warren schreef:
> Can you post links to your result images?
> On Jan 7, 2012 10:08 AM, "DeDuikertjes" <DeDuikertjes at xs4all.nl
> <mailto:DeDuikertjes at xs4all.nl>> wrote:
> Now that I have opacity working I'm getting some strange results.
> The opacity of the features is always ok (semi-opaque as set).
> However, the transparency in between the features behave very
> For the same layer I get tiles where the area around the features
> is black-semi-opaque as well as tiles where the area around the
> features is white-semi-opaque
> I've done some investigating. I came to these findings:
> - It doesn't matter how image mode is specified on source or
> cache. All tiles are stored in indexed 8 bit.
> - stored tiles do have transparent background
> - the features in the caches tiles are opaque
> - So: the image opacity is not applied on storage of the tiles,
> but when tiles are requested.
> - is doesn't matter what image mode I set, I always get the same
> semi opaque features as set with image opacity
> area around the features not transparent but semi-opaque white
> or semi-opaque black.
> Any one have a clue how to solve this?
> Any help again greatly appreciated, MArco
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> MapProxy at lists.osgeo.org <mailto:MapProxy at lists.osgeo.org>
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