Descartes Merge vector with white background

Offline Thomas Stavik-Karlsen over 7 years ago

We are working in PowerCivil with white background color. When testing Descartes Merge command to create georeferenced rasters, all black (color 0) elements were excluded from the raster.

Is there a setting somewhere that allows me to create a georeferenced raster with white as background color?

I have found a configuration variable named "_DC_TRANSPARENCY", but I have not found any documentation on that variable.

In the example below, only non-black colors are saved to raster.

ORIGINAL

OUTPUT FROM MERGE TOOL

0 Offline fmcallis Thu, Sep 8 2016 1:29 PM in reply to Thomas Stavik-Karlsen

One option that you could do is change the element that was white with a black background that shows black when you change the background to white from 0 to 253, which is a black color. Another option would be to set the color mode to monochrome on your output image rather than RGB.

You can create your output file as a GeoTIFF or an Internet TIFF or a TIF image with a sister file and it will save the location where the output image is attached.
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0 Offline Thomas Stavik-Karlsen Thu, Sep 8 2016 8:41 AM in reply to fmcallis

Thanks fmcallis.
I am looking forward to a solution in a future version.

Is there any other method I can use today that allows me to export rasters with geocoding? We have access to PowerCivil, Descartes and Map.

Thomas H. Stavik-Karlsen
Senior Engineer
http://www.Akersolutions.com
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0 Offline fmcallis Wed, Sep 7 2016 12:30 PM in reply to Thomas Stavik-Karlsen

Thomas,

I have duplicated what you are seeing. I opened a DGN file with a black background. I created circles and blocks and made 2 of the circles white and made the other ones to be red and blue. I changed the background from black to white and attached a raster image so the Merge command would work. The white circles changed from white to black when I changed the background color. I used the Merge command with it set to Vector Only and when the raster image was created it did not create the white circles. I will file a defect for the issue.

Answer Verified By: Thomas Stavik-Karlsen
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0 Offline Thomas Stavik-Karlsen Wed, Sep 7 2016 2:18 AM in reply to fmcallis

fmcallis, it seems that if I have the background set as white, the elements with color "0" are excluded from the export. This means that inversion is not a solution. Please see the video. Hopefully this makes my issue clearer and that other users can replicate the issue as well.

In the video, I am attaching a raster file just to have access to the merge tool.

Link to video for those of us without flash: https://youtu.be/w3M_nANE8qU

Thomas H. Stavik-Karlsen
Senior Engineer
http://www.Akersolutions.com
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0 Offline fmcallis Tue, Sep 6 2016 2:25 PM in reply to Pascal Cloutier

You can look at the attached website links. The first website deals with the issue that you are having.

communities.bentley.com/.../65306

communities.bentley.com/.../27941.merge-command-in-bentley-descartes

communities.bentley.com/.../25633.bentley-descartes-merge-command-does-not-work-when-set-to-vector-only

communities.bentley.com/.../24911.bentley-descartes-merge-command-output-has-bad-resolution

communities.bentley.com/.../291006
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