Christopher Barker wrote: > Travis Oliphant wrote: > >> Actually something as simple as >> >> class InfoArray(N.ndarray): >> pass >> >> will allow you to add attributes to InfoArray. >> > > Well, sure, but how the heck do you initialize it? > > >>> class InfoArray(N.ndarray): > ... pass > ... > >>> InfoArray((1,2,3)) > InfoArray([[[ 6.61855173e-306, nan, 4.94708449e+173], > [ 3.32457336e-309, 1.08825491e+175, 2.12468326e-314]]]) > > InfoArray(N.array((1,2,3))) > InfoArray([[[ 2.17854722e-305, 1.90979621e-313, 1.90979621e-313], > [ 1.90979621e-313, 1.90979621e-313, 1.03977794e-312]]]) > > I, for one, would like a very easy to subclass version of ndarray, maybe > one that had a default constructor like numpy.array(). > > Back when I was working on basearray, I had an idea for this. Basically, it was to to move the ndarray constructor[1] over to basearray and make the ndarray constructor work just like array does now[2]. Thus array(args) and ndarray(args) would behave the same[2 again]. For the full power/complexity of the current ndarray constructor, you would instead use basearray(). I believe (and I did some experiments on this at one point), that this would allow straightforward inheritance from ndarray. I've been away from this for several months now, so sadly I forget many of the details.
-tim [1] I know, I know, it's really __new__, but it gets used like a constructor so I'll call it one for the time being. [2] Modulo the copy arg which would disappear if I had anything to with it. ------------------------------------------------------------------------- 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
