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ERDAS APOLLO & ECW/JP2

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New Contributor
Posts: 3
Registered: ‎07-14-2017

Geocompressor - How do I change the Null Band Value?

[ Edited ]

We have just purchased the geocompressor and need to change the Null Band Value from Min Band Value (default) to Max Band Value. However the option is greyed out / disabled on the Opacity Channel Options.

 

2nd question if no answer to first: How do I get support directly from Hexagon? I see references to support tickets but cant navigate to the correct page.

 

Thanks in advance,

Loren.

Technical Evangelist
Posts: 796
Registered: ‎07-30-2015

Re: Geocompressor - How do I change the Null Band Value?

Hi Loren,

 

For support ticket, go to community http://community.hexagongeospatial.com/, and click "Knowledge & Support->Support portal" (https://hexagongeospatial.force.com/supportportal/s/). Login and you should be able to create ticket there.

 

For change NULL data value from min to max, I don't think you can do it in Geocompressor. I know user can use ERDAS IMAGINE metadata to change NULL data value. You can check the following KB:

http://community.hexagongeospatial.com/t5/ERDAS-IMAGINE-Q-A/How-to-change-NULL-NoData-value-for-your... 

 

best

haiyan

New Contributor
Posts: 3
Registered: ‎07-14-2017

Re: Geocompressor - How do I change the Null Band Value?

Thanks for the quick reply hauyan_qu! I have forwarded it to our ortho tech for him to try.

Additionally, Hexagon support has contacted me and opened a ticket on this issue.

Highlighted
Staff
Posts: 503
Registered: ‎02-02-2016

Re: Geocompressor - How do I change the Null Band Value?

You can only change the null band value if the output format is ECW version 3 and the compression method parameter is set to “Tile”. If you are outputting to JPEG2000 or ECW version 2 the option to change the null band value is disabled.

 

ecw3.jpg

 

Regards,

 

Stephen Bent

Hexagon Geospatial Support

 

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