On Wed, Jan 20, 2010 at 10:03 AM, David Doria <[email protected]> wrote:
> On Wed, Jan 20, 2010 at 9:58 AM, David E DeMarle <[email protected] > > wrote: > >> It was not meant to be preserved. For performance reasons the >> extraction filter (vtkExtractSelectedIds specifically) sorts both the >> selection list and the element id array so that it can do a quick >> lookup of the usually numerous entries in the selection list. >> >> David E DeMarle >> Kitware, Inc. >> R&D Engineer >> 28 Corporate Drive >> Clifton Park, NY 12065-8662 >> Phone: 518-371-3971 x109 >> >> >> >> On Tue, Jan 19, 2010 at 1:37 PM, David Doria <[email protected]> >> wrote: >> > On Mon, Jan 18, 2010 at 12:31 PM, David Doria <[email protected]> >> wrote: >> >> >> >> If I select 3 points and then use the ExtractSelection filter, I would >> >> expect the IDs of the points to be 0,1,2, in the order selected. >> >> Instead, they are 2, 0, 1. >> >> >> >> Is there any way to prevent this? I am trying to set corresponding >> >> landmarks, so the order is important, and it is being lost. >> >> >> >> Thanks, >> >> >> >> David >> > >> > Here is a demo of the problem: >> > >> > http://www.rpi.edu/~doriad/Paraview_List/ExtractSelection/ >> > >> > points.vtp contains 10 points, (0-9). I selected points 9, 8, 7, in that >> > order and extracted the selection. The result (extracted.vtp) has the 3 >> > extracted points (corresponding to 9,8,7) ordered 2, 1, 0, rather than >> 0, 1, >> > 2, which was the selection order. >> > >> > Is this a bug or was the ordered never intended to be preserved? >> > >> > Thanks, >> > >> > David >> > >> >> > I see. Is there any other way in Paraview I can get a list of points in the > order I click/select them? > > Thanks, > > David > A hack for the time being... I selected one point at a time and extracted it. Then I append the data sets. This makes a resulting data set of the points which were selected in the correct order. Thanks, David
_______________________________________________ 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
