def list2index(L): uL=sorted(set(L)) idx=dict((y,x) for x,y in enumerate(uL)) return uL,asmatrix(fromiter((idx[x] for x in L),dtype=int,count=len(L)))
adding the count will save you a little more time, and temporary memory [see related thread]. //Torgil On 8/29/06, Keith Goodman <[EMAIL PROTECTED]> wrote: > On 8/29/06, Torgil Svensson <[EMAIL PROTECTED]> wrote: > > something like this? > > > > def list2index(L): > > uL=sorted(set(L)) > > idx=dict((y,x) for x,y in enumerate(uL)) > > return uL,asmatrix(fromiter((idx[x] for x in L),dtype=int)) > > Wow. That's amazing. Thank you. > > ------------------------------------------------------------------------- > 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 > ------------------------------------------------------------------------- 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