[General] Problem with colors

The_Architect · May 31, 2012, 06:44

Hi,

I'm totally new to paraView. Going through some openFOAM tutorials I have not been able to overcome the problem of my results just staying totally black. The color does not change no matter what "Color by" option I choose. The problem stays for surfaces as well as for vectors.

Thanks in advance!

taxalian · June 3, 2012, 09:00

Hi Patrik,
I think you just have to re-scale the contour values of your variable. Just besides the Top Left Hand Side of the color by option you see another option to re-scale the magnitude levels and thats it hopefully.

taxalian.

The_Architect · June 5, 2012, 04:00

Thanks for the advice, the problem is still there. Below is another example, this one is from the openFOAM tutorial "dam break" where the volume fraction has been displayed. Again, the "Surface" option turns everything black (velocity vectors in the case are black as well). However, if I turn the representation to "Wireframe" I get the right color scale on the wireframe.

wyldckat · June 6, 2012, 20:01

Greetings to all!

@Patrik: I know I've seen someone with a similar problem on the OpenFOAM side of the forum.
I've been keeping links to as many as threads for these kinds of issues with ParaView in Linux: Related issues to ParaView with OpenFOAM - Fixes and solutions
Hopefully you can find a thread describing the same issue and how it was fixed!

Best regards,
Bruno

May 31, 2012, 06:44	Problem with colors	#1
The_Architect New Member Join Date: Jun 2011 Posts: 19 Rep Power: 15	Hi, I'm totally new to paraView. Going through some openFOAM tutorials I have not been able to overcome the problem of my results just staying totally black. The color does not change no matter what "Color by" option I choose. The problem stays for surfaces as well as for vectors. Thanks in advance!

June 6, 2012, 20:01		#4
wyldckat Retired Super Moderator Bruno Santos Join Date: Mar 2009 Location: Lisbon, Portugal Posts: 10,982 Blog Entries: 45 Rep Power: 128	Greetings to all! @Patrik: I know I've seen someone with a similar problem on the OpenFOAM side of the forum. I've been keeping links to as many as threads for these kinds of issues with ParaView in Linux: Related issues to ParaView with OpenFOAM - Fixes and solutions Hopefully you can find a thread describing the same issue and how it was fixed! Best regards, Bruno __________________ OpenFOAM: FAQ \| Getting started Forum: How to get help, to post code/output and forum guide Read this before sending me PM

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June 3, 2012, 09:00		#2
taxalian Senior Member Join Date: Nov 2010 Posts: 139 Rep Power: 15	Hi Patrik, I think you just have to re-scale the contour values of your variable. Just besides the Top Left Hand Side of the color by option you see another option to re-scale the magnitude levels and thats it hopefully. taxalian.

June 5, 2012, 04:00		#3
The_Architect New Member Join Date: Jun 2011 Posts: 19 Rep Power: 15	Thanks for the advice, the problem is still there. Below is another example, this one is from the openFOAM tutorial "dam break" where the volume fraction has been displayed. Again, the "Surface" option turns everything black (velocity vectors in the case are black as well). However, if I turn the representation to "Wireframe" I get the right color scale on the wireframe.