Question - shouldn't the calculator be able to handle this? When you have "Replace invalid results" checked, shouldn't that change NANs to 0's?
Is this a bug - and should I write up a bug report? Thanks, Alan From: paraview-boun...@paraview.org [mailto:paraview-boun...@paraview.org] On Behalf Of Scott, W Alan Sent: Friday, August 20, 2010 11:13 AM To: 'Eric E. Monson' Cc: 'paraview@paraview.org list' Subject: Re: [Paraview] nan Thanks all! I believe we have found numerous solutions. Alan From: Eric E. Monson [mailto:emon...@cs.duke.edu] Sent: Friday, August 20, 2010 9:26 AM To: Scott, W Alan Cc: David E DeMarle; Aurélien Marsan; paraview@paraview.org list Subject: Re: [Paraview] nan If you can use numpy, and you're using a recent-enough version of ParaView, then you can also use the super-spiffy-numpy-hidden-behind-the-scenes programmable filter API to replace all of the attribute arrays with zero'd versions: pdi = self.GetInputDataObject(0,0) pdo = self.GetOutputDataObject(0) pdo.CopyStructure(pdi) for att_name in inputs[0].PointData.keys(): naninc = inputs[0].PointData[att_name] zerod = numpy.nan_to_num(naninc) output.PointData.append(zerod, att_name) Talk to you later, -Eric ------------------------------------------------------ Eric E Monson Duke Visualization Technology Group On Aug 20, 2010, at 10:00 AM, Aurélien Marsan wrote: Hi, If you're using python, and if you can use the numpy library, you can use the function numpy.nan_to_num too. http://docs.scipy.org/doc/numpy/reference/generated/numpy.nan_to_num.html#numpy.nan_to_num Regards, Aurélien 2010/8/20 David E DeMarle <dave.dema...@kitware.com<mailto:dave.dema...@kitware.com>> That said, the same trick may work in the standard calculator filter with the expression: if(val=val, val, 0.0) David E DeMarle Kitware, Inc. R&D Engineer 28 Corporate Drive Clifton Park, NY 12065-8662 Phone: 518-371-3971 x109 On Fri, Aug 20, 2010 at 9:26 AM, David E DeMarle <dave.dema...@kitware.com<mailto:dave.dema...@kitware.com>> wrote: > You might write a python filter that iterates over all floating point arrays > and > replaces nan's with 0. > > According to > http://stackoverflow.com/questions/944700/how-to-check-for-nan-in-python > The most py version robust way to check for nan is: > > def isNaN(num): > return num != num > > David E DeMarle > Kitware, Inc. > R&D Engineer > 28 Corporate Drive > Clifton Park, NY 12065-8662 > Phone: 518-371-3971 x109 > > > > On Thu, Aug 19, 2010 at 11:24 PM, Moreland, Kenneth > <kmo...@sandia.gov<mailto:kmo...@sandia.gov>> wrote: >> This might not be the best solution, but you can use the threshold filter to >> remove NANs. A NAN will always fall outside the threshold range. >> >> -Ken >> >> >> On 8/19/10 6:28 PM, "Scott, W Alan" >> <wasc...@sandia.gov<mailto:wasc...@sandia.gov>> wrote: >> >> Is there a way to convert nan's to zeros in ParaView? I have a user that is >> trying to use the integrate data filter, and it is having troubles with >> NANs. >> >> Thanks, >> >> Alan >> >> >> >> >> >> _______________________________________________ >> Powered by www.kitware.com<http://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<http://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<http://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
