Re: [Numpy-discussion] subdivide array
I have an array of data for a global grid at 1 degree resolution. It's filled with 1s and 0s, and it is just a land sea mask (not only, but as an example). I want to be able to regrid the data to higher or lower resolutions (i.e. 0.5 or 2 degrees). But if I try to use any standard interp functions, such as mpl_toolkits.basemap.interp it fails -- I assume due to the data being binary. I guess there may be a fairly easy routine to do this?? Does someone have an example? When I've had to do this, I typically set Basemap's interp to do nearest-neighbor interpolation (by setting order=0). It defaults to order=1, which is bilinear interpolation, which will destroy the binary nature of your data (as you perhaps noticed). Tim ___ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] subdivide array
On Nov 30, 2010, at 5:40 PM, John wrote: Hello, I have an array of data for a global grid at 1 degree resolution. It's filled with 1s and 0s, and it is just a land sea mask (not only, but as an example). I want to be able to regrid the data to higher or lower resolutions (i.e. 0.5 or 2 degrees). But if I try to use any standard interp functions, such as mpl_toolkits.basemap.interp it fails -- I assume due to the data being binary. I guess there may be a fairly easy routine to do this?? Does someone have an example? Just a random idea: have you tried to convert your input data to float? Hopefully you could get some values between 0 and 1 for your interpolated values, that you'll have to transform back to integers following a scheme of your choosing... ___ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
