[Numpy-discussion] Extract groups of/individual bit values from UInt16 array [SEC=UNCLASSIFIED]

2010-10-12 Thread Pinner, Luke
I'm working with some MODIS satellite imagery. MODIS data includes a quality flag mask. For the particular dataset I'm working with, this is a two dimensional unsigned 16 bit integer array. The quality flags are stored as one or more bits in each integer value: Bits are numbered from 0 (least sign

Re: [Numpy-discussion] saving masked array to a text file

2010-09-06 Thread Pinner, Luke
How about the masked aray filled method? eg numpy.savetxt(somefilename, somemaskedarray.filled(somevalue)) Luke -Original Message- From: Guillaume Chérel Sent: Monday, 6 September 2010 10:36 PM To: Discussion of Numerical Python Subject: [Numpy-discussion] saving masked array to a text fi

Re: [Numpy-discussion] Replacing values based on index

2010-08-11 Thread Pinner, Luke
Simple as that... Thanks! -Original Message- From: numpy-discussion-boun...@scipy.org [mailto:numpy-discussion-boun...@scipy.org] On Behalf Of Geordie McBain Convert days to np.array, then you can index it with your indexmin: days = [10, 20, 31, 41, 51, 59, 69, 79, 90, 100] mydays

[Numpy-discussion] Replacing values based on index

2010-08-11 Thread Pinner, Luke
Apologies if this has been asked many times before, but I'm having trouble even coming up with the right terms to search on. I have an x,y,date stack of satellite images from which I need to know on what date the max and min values occur. I can calculate the index at which the min/max values occur