Chris, thanks for the answers. I will probably write a wrapper for cases that I need often.
David, well, there is PDL::Reduce for aggregates. I was looking for something similar for non-reducing functions, ie. rotate. Ingo On 06/12/2013 08:38 PM, David Mertens wrote: > For the record, many functions in numpy allow you to specify the axis > over which reductions are to be performed--precisely what you're > looking for. This sounds nice until you realize that the concept > doesn't scale up to higher dimensions or multiple input piddles very > nicely. This is why PDL introduces the axis manipulation methods and > always operates on the left-most axes. It is far more general. > > David > > > On Tue, Jun 11, 2013 at 12:42 PM, Chris Marshall > <[email protected] <mailto:[email protected]>> wrote: > > Hi Ingo- > > <replying to perldl list as this is not pdl-porters only> > > That is the current way to do so. While is is a lot > to write, it is very general. However, here are some > thoughts: > > - you could implement a new rotate() method that > does what you need > > - you could implement a do() method that evals and > generates the needed method > > - work for PDL3 is going to enable more flexible dimension > assignments and permutation for threading and argument > passing > > And yes, I find it tedious as well :-) > > --Chris > > On Tue, Jun 11, 2013 at 11:49 AM, Ingo Schmid <[email protected] > <mailto:[email protected]>> wrote: > > > > Hi, > > > > is there a simple way to specify a dimension for a given > operation? What I > > mean is for example rotate along the n-th dimension. I knwo that > I can do > > > > $x->mv($n,0)->rotate($r)->mv(0,$n) > > > > but this is quite tedious, imo. > > > > I know there is PDL::Reduce for aggregates. > > > > What I mean is a syntax like > > > > $x->do('rotate',$n) > > > > or something similar. > > Does it exist? > > > > Ingo > > _______________________________________________ > Perldl mailing list > [email protected] <mailto:[email protected]> > http://mailman.jach.hawaii.edu/mailman/listinfo/perldl > > > > > -- > "Debugging is twice as hard as writing the code in the first place. > Therefore, if you write the code as cleverly as possible, you are, > by definition, not smart enough to debug it." -- Brian Kernighan > > > _______________________________________________ > Perldl mailing list > [email protected] > http://mailman.jach.hawaii.edu/mailman/listinfo/perldl
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