I am creating an ECW raster mosaic from around 500 JPGs using the RasterMosaicker transformer, in FME 2015.1. The attached snapshot shows a test piece of the resulting mosaic, but ideally I would like the areas with no data to be transparent, not black. Is this possible? I have read some threads on a similar theme but I find the answers where bands are discussed difficult to understand as I don't have enough knowledge in this area. Is there a simple solution? Probably not! Many thanks.
+4Have you tried RasterInterpretationCoercer. Convert from RGB to RGBA and select to 'create alphaband from no data'. If black pixels aren't defined as nodata use RasterBandNodataSetter before RICoercer.
Cheers,
Želimir
+8rastertransparancy.fmw I experimented with this, see attachment. Might also be a good tip to add transparance before mosaicking to avoid black backgrounds, see
https://knowledge.safe.com/articles/18764/setting-alpha-vs-nodata-color-and-numeric-data.html
Hope this inspires you @masoj1.
rastertransparancy.fmw I experimented with this, see attachment. Might also be a good tip to add transparance before mosaicking to avoid black backgrounds, see
https://knowledge.safe.com/articles/18764/setting-alpha-vs-nodata-color-and-numeric-data.html
Hope this inspires you @masoj1.
Wow thanks, @helmoet , I'll try this too as soon as I can.
+2rastertransparancy.fmw I experimented with this, see attachment. Might also be a good tip to add transparance before mosaicking to avoid black backgrounds, see
https://knowledge.safe.com/articles/18764/setting-alpha-vs-nodata-color-and-numeric-data.html
Hope this inspires you @masoj1.
@helmoet, is there a way, i can get the attachment 'rastertransparancy.fmw'? The attechment in your reply doesn't work anymore.
+8rastertransparancy.fmw I experimented with this, see attachment. Might also be a good tip to add transparance before mosaicking to avoid black backgrounds, see
https://knowledge.safe.com/articles/18764/setting-alpha-vs-nodata-color-and-numeric-data.html
Hope this inspires you @masoj1.
@kampinga_c here it is again, though it is a bit of an oldy...rastertransparancy.fmw
