[Cartoweb-users] ECW

Bruno Friedmann bruno at ioda-net.ch
Fri Jun 11 13:01:43 EST 2010

On 06/11/2010 07:25 PM, Simone Frigerio wrote:
> Ya Bruno, was exactly that problem! Thanks.
> The only problem is now how to manage external black background created
> aftter ECW or JP2 compression (original heavy tiff files didn't have it,
> but simply NoData). I need to solve out cartoweb framework, I suppose.
> Do you have any idea?
> Special thanks.

better to answer to list ... so everybody enjoy solutions
I suspect it's more mapserver related than cw3.

with the help of shp2img you can get directly what mapserver return
( you have to simulate the checked layers etc ) It could be hard to make ecw & mapserver properly linked together
depending on what OS you are using.

Also if ecw take less space on disk, each time you need them mapserver has to uncompress them in ram.
So a judicious calculation between the time loss and/or place should be done.

If you try to import your ecw files inside a soft like udig, qgis did you get also the black background ?

I didn't really know well all ecw problematic, so perhaps someone else can drive you to the right way.


     Bruno Friedmann

More information about the Cartoweb-users mailing list