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Hi Hugo,

Re PDL: it is possible to add types, using PDL::Types. Each type needs to be something the C compiler understands, though.

It does occur to me that perhaps you could stick with the types that are already there, and pack your flags into a byte (or larger) datatype, then use bitwise operators to work on them. Take a look at bandover() and borover() in PDL::Ufunc.

In general: PDL is great and well worth the time spent learning. The chief disadvantage is that occasionally the syntax of PDL threading, and the amount of power that you can put into one statement, can make your head explode. Ensure a plentiful supply of calming tea and biscuits while learning.

Also, once you start doing threaded ops on large matrices, it's easy to run out of memory - that's not PDL's fault though.

Best, andye

In reply to Re: decomposing binary matrices (2) by andye
in thread decomposing binary matrices (2) by hv

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