Thanks Jody,
I ended up changing the band type from UInt8 to Int16 and using a negative
value to store the null (transparent) values. I don't know if its the more
efficient way but its the only solution I could come up with.
Anna.
2017-06-27 19:45 GMT+02:00 Jody Garnett <jody.garn...@gmail.com>:
> I think you are reading a bug repot, so Andrea is describing what
> geoserver should do to fix the problem internally. Perhaps the code was
> only ever tested with single band data like a DEM before so this is a new
> feature being requested.
>
> --
> Jody Garnett
>
> On 16 June 2017 at 01:48, Anna Amat <anna.amat...@gmail.com> wrote:
>
>>
>> Hi list,
>>
>> I'm facing the problem of setting a color map in a 2 band (grayscale +
>> alpha raster). I found this entry here :
>> https://osgeo-org.atlassian.net/browse/GEOT-5223?page=com.at
>> lassian.jira.plugin.system.issuetabpanels%3Aworklog-tabpanel
>>
>>
>> but I don't understand what it means by : "*Just relax it* so that the
>> color map is applied to the gray part in case the second band is alpha"
>>
>> Do I have to set 0 value to transparent? In this case pixels with 0 in
>> the gray band would also become transparent and this is not the behaviour I
>> want.
>>
>> Thanks in advance,
>> Anna.
>>
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