Friends, I have an 1d array like a=[1, 1, 2, 2, 2, 3, 3, 1, 1, 1], i have to convert it to 2d array for plotting as follows. The 2d array is filled by a[colum index] to obtain the new array shown below.
[ [ 1., 1., 0., 0., 0., 0., 0., 1., 1., 1.], [ 0., 0., 2., 2., 2., 0., 0., 0., 0., 0.], [ 0., 0., 0., 0., 0., 3., 3., 0., 0., 0.] ] I wrote the following simple code for the conversion. However i guess there should be more fancy/speeder way to do that. Also i need to create such 2d-array from larger 1d arrays of size 20000,30000 items etc. Hence i would like to request hints for a better code for the purpose. Here no. rows in my case is always = no. of discrete values in array a. >>>my=1 >>>for i in range(3): >>> for j in range(10): >>> if a[j] == my : b[i,j]=my >>> else: b[i,j]=0 >>> my +=1 Thanks, Bala _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor