On Sat, Jun 26, 2010 at 9:26 PM, Craig DeForest <[email protected]> wrote: > Sorry to break up the answer. Periodic boundaries start at the other side of > the source array when the index runs off the end; this is a commonly used > term in many scientific communities. Mirror conditions reverse indexing > direction at the boundary. Try some cases that bust the boundary by more > than one row and you should see the pattern. >
Cool! makes perfect sense, once I increase the size of the $size. Once again, might be worth putting in the docs to make it clear. In any case, the docs seem to have an error regarding 'x' as a synonym for 'extend.' > (Mobile) > > > On Jun 26, 2010, at 8:16 PM, P Kishor <[email protected]> wrote: > >> $in = pdl( >> [ >> [ 0 1 2 3 4] >> [ 5 6 7 8 9] >> [10 11 12 13 14] >> ] >> ); >> >> boundary: f >> ----------- >> $out = $pdl->range( [2, 0], [4, 2], 'f'); >> index out-of-bounds in range at >> /usr/local/lib/perl5/site_perl/5.12.1/darwin-2level/PDL/Core.pm line >> 2779. >> punk...@dyn-72-33-101-43 ~/Data/carbonmodel/daymet$perl pdl.pl >> >> boundary: t >> ----------- >> $out = $pdl->range( [2, 0], [4, 2], 't'); >> [ >> [2 3 4 0] >> [7 8 9 0] >> ] >> >> Based on the my understanding of the word 'truncate,' I was expecting >> [ >> [2 3 4] >> [7 8 9] >> ] >> >> Is there any way to get something like above? That is, the range >> outside the boundary is just ignored, or, in other words, the range is >> "clipped" or truncated based on the boundary? >> >> boundary: e >> ----------- >> $out = $pdl->range( [2, 0], [4, 2], 'e'); >> [ >> [2 3 4 4] >> [7 8 9 9] >> ] >> >> boundary: x >> ----------- >> $out = $pdl->range( [2, 0], [4, 2], 'x'); >> Error in rangeb: Unknown boundary condition 'x' in range at >> /usr/local/lib/perl5/site_perl/5.12.1/darwin-2level/PDL/Slices.pm line >> 332. >> punk...@dyn-72-33-101-43 ~/Data/carbonmodel/daymet$perl pdl.pl >> >> huh! I thought 'x' was a synonym for 'e'. What happened? Is there a >> mistake in the docs? >> >> >> boundary: p >> ----------- >> $out = $pdl->range( [2, 0], [4, 2], 'p'); >> [ >> [2 3 4 0] >> [7 8 9 5] >> ] >> >> I don't understand what 'p' is doing. Could someone explain that >> please? Maybe the docs need to be expanded. >> >> boundary: m >> ----------- >> $out = $pdl->range( [2, 0], [4, 2], 'm'); >> [ >> [2 3 4 4] >> [7 8 9 9] >> ] >> >> I don't understand what 'm' is doing. Could someone explain please? >> >> Many thanks. >> >> >> >> >> -- >> Puneet Kishor >> >> _______________________________________________ >> Perldl mailing list >> [email protected] >> http://mailman.jach.hawaii.edu/mailman/listinfo/perldl >> > -- Puneet Kishor _______________________________________________ Perldl mailing list [email protected] http://mailman.jach.hawaii.edu/mailman/listinfo/perldl
