The contour filter doesn't pass the input scalars by default. Make sure that "Compute Scalars" checkbox is checked.
Utkarsh On Fri, Jun 17, 2011 at 4:28 AM, Richard Beare <[email protected]> wrote: > This did work very nicely for volume rendering, but I didn't succeed > with the contouring approach. I was not able to select colormaps for > the second and third datasets. > > Any suggestions? > > On Wed, Jun 15, 2011 at 10:59 PM, Utkarsh Ayachit > <[email protected]> wrote: >> ParaView associates color maps with array-names, so all arrays with >> the same name use the same color map. An easiest way around this is to >> apply the "Calculator" filter to each of the mha file readers set the >> expression to the name of the input array while change the "Result >> Array Name" for every instance of the calculator to be something >> unique. Now you can color the results produced by each of the >> calculators differently using different colormaps. >> >> Utkarsh >> >> On Wed, Jun 15, 2011 at 1:02 AM, Richard Beare <[email protected]> >> wrote: >>> Hi, >>> I'm investigating methods for display of a 4D microscopy dataset. I'd >>> like to be able to reproduce the style of display provided by Imaris, >>> however I'm not entirely sure how Imaris does it. It may be volume >>> rendering or a clever surface rendering. >>> >>> The data is from a confocal microscope and has 3 fluorescent channels. >>> I can convert the data to many forms - at present I have it as 3 >>> channel mha and 3 individual mha files. >>> >>> The things I've tried are 1) volume rendering each channel >>> independently and applying a red, green or blue colormap. However I >>> don't seem to be able to set a different colormap for each volume. 2) >>> using the contour filter to create several contours for each channel >>> and colour the result. If I use a solid color for each channel and >>> play with opacity I can get interesting results. However I'd like to >>> be able to colour according to underlying brightness. I have the same >>> trouble with colourmaps in this approach as I do for the volume >>> rendering - I am only able to set one colourmap. A temporary option is >>> to use the colourmap for the most important channel and use solid >>> colors for the others. >>> >>> Is anyone able to recommend a better way? >>> >>> Thanks >>> _______________________________________________ >>> Powered by www.kitware.com >>> >>> Visit other Kitware open-source projects at >>> http://www.kitware.com/opensource/opensource.html >>> >>> Please keep messages on-topic and check the ParaView Wiki at: >>> http://paraview.org/Wiki/ParaView >>> >>> Follow this link to subscribe/unsubscribe: >>> http://www.paraview.org/mailman/listinfo/paraview >>> >> > _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview
