Hi Larry, This sounds like a potential bug. Can you send me a dataset so that I can reproduce it?
Thanks, -berk On Mon, Aug 10, 2009 at 11:59 AM, Lawrence M. Lifshitz<[email protected]> wrote: > I have created a 3 component image dataset (.vti format). I am trying > to read it into paraview so that I can display it as a red/green/blue image. > p. 42 of the ParaView Guide says that this should be possible (for 3 > component > images with unsigned chars for each of the 3 components). > > Unfortunately, for some reason I can't even get ParaView to treat this > as a volume data set. It reads in the data, but when I try to set it to > volume rendering (Object Inspector->Display tab -> Style -> Interpolation > -> Volume) > I get the message "cannot volume render since no point (or cell) > data available". I am getting this message EVEN THOUGH the > "Information" tab of the Object Inspector says > > Type: Image (Uniform Rectilinear Grid) > Number of Cells 10444840 > Number of Points 10747904 > Memory: 3.15e+01 MB > Data Arrays: > Name: i2idata > Data Type: unsigned char > Data Ranges: [0,255], [0,255], [0,255] > > This all looks correct to me. > The extents and bounds are also correct. > > So, why, if all this info looks correct, is it saying it doesn't > have any point data? > > I did create the dataset with my own software, so it is possible > that something in the format is wrong; but it couldn't be very > wrong if all the display info looks fine. I also use this software to > create 1 component signed short data volumes, and those work > fine (i.e., I can set the display style to "volume"). > > Alternatively (or maybe better) I would be happy reading in > 3 images and using different colormaps on each one. Can ParaView > handle multiple colormaps with the image volumes superimposed? > Or even in separate windows (I've tried fooling around with that but > it seems like it each colormap which gets presented is not independent > of the others, but not quite identical either; I can't interpret exactly > what it thinks it is doing)? > > Thanks for any help. > > Larry > > (I am using ParaView 3.4.0 on Fedora 11 64 bit system). > > > -- > Lawrence M. Lifshitz, Ph. D., Associate Professor > Biomedical Imaging Group (http://invitro.umassmed.edu) > University of Massachusetts Medical School (http://www.umassmed.edu) > Phone: (508) 856-3392 email: [email protected] > Fax: (508) 856-1840 web: http://invitro.umassmed.edu/lml > > > _______________________________________________ > 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
