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Support ECW / JP2

The ECW (Enhanced Compressed Wavelet) and JP2 formats are standard compressing processes in many Hexagon Geospatial products. This discussion board focuses on the production and use of the ECW/JP2.
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New Contributor
Posts: 3
Registered: ‎07-14-2017

Geocompressor - How do I change the Null Band Value?

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: 777
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.

Staff
Posts: 468
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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