On Sat, Nov 11, 2006 at 10:40:22AM -0800, Keith Goodman wrote: > I accidentally wrote a unit test using int32 instead of float64 and > ran into this problem: > > >> x = M.matrix([[1, 2, 3]]) > >> x[0,1] = M.nan > >> x > matrix([[1, 0, 3]]) <--- Got 0 instead of NaN > > But this, of course, works: > > >> x = M.matrix([[1.0, 2.0, 3.0]]) > >> x[0,1] = M.nan > >> x > matrix([[ 1. , nan, 3. ]]) > > Is returning a 0 instead of NaN the expected behavior?
NaN (or inf) is a floating point number, so seeing a zero in integer representation seems correct: In [2]: int(N.nan) Out[2]: 0L Cheers Stéfan ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Numpy-discussion mailing list Numpy-discussion@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/numpy-discussion
