Question #676284 on Yade changed: https://answers.launchpad.net/yade/+question/676284
Jérôme Duriez proposed the following answer: Hi Luis, This error meant that your call to avgNumInteractions() triggered a call to bodyNumInteractionsHistogram() [1] with a Python list as an argument, whereas the latter bodyNumInteractionsHistogram() (a Python function inherited from C++ world thanks to boost::python) wants Python tuples as arguments [2]. And Python list and Python tuples are different things (but do not ask me why ;-) ) In more details bodyNumInteractionsHistogram had actually been called with the output of aabbExtrema() as an argument [1]. And, because of recent changes in the C++ world [3] (and because of the exact manner the C++ and the Python worlds are connected), the return type of aabbExtrema() in the Python world is now a list, whereas it used to be a tuple. Hence the error, as my 1st paragraph said. I just committed changes [4] that solve the bug, as well as the other following example maybe closer to your needs: ######### O.bodies.append(sphere((0,0,0),1,dynamic=False)) O.bodies.append(sphere((0,0,1.9),1,dynamic=False)) O.bodies.append(sphere((0.7,0,0.7),1,dynamic=False)) # 3 spheres example to avoid the "nan" case in avgNumInteractions(skipFree=True) O.step() print '' print 'Avg Num Interactions', avgNumInteractions(cutoff=0.0,skipFree=True,considerClumps=False) ######### (This could have been your MWE ;-) ) When and how these changes will land in your computer depend on your use of YADE. Thanks for reporting anyway, Jérôme [1] See File "/usr/lib/x86_64-linux-gnu/yadedaily/py/yade/utils.py", line 438, in avgNumInteractions, the command "nums,counts=bodyNumInteractionsHistogram(aabbExtrema(cutoff)" [2] https://github.com/yade/trunk/blob/c14fd94f6be04f24e45daff0eed6ae6b8e737d4f/py/_utils.hpp#L29 [3] https://github.com/yade/trunk/commit/1db13fb1183b9e294dc9761da76cfa4fc2791cc1 [4] https://github.com/yade/trunk/commit/7c60d78bd9badfa174fb79a82af7b119abf81d5d -- You received this question notification because your team yade-users is an answer contact for Yade. _______________________________________________ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
