Time to learn about rank! In my experience u"1 N_BY_2_MATRIX
runs faster than u@:|: N_BY_2_MATRIX
Date: Wed, 30 Apr 2014 10:49:40 +0100 From: alexgian<[email protected]> To: J Programming forum<[email protected]> Subject: [Jprogramming] Applying a dyad to exusting matrix data Message-ID: <CAD=r9jom2p_mnztgruxw4_teevqzu2hwaxfi9hzrfmwfc7p...@mail.gmail.com> Content-Type: text/plain; charset=UTF-8 Suppose I have an Nx2 data matrix, say x1 y1 x2 y2 x3 y3 .... and a dyadic verb called, say, df1 Is there an elegant way to get the result matrix x1 df1 y1 x2 df1 y2 x3 df1 y3 ..... without resorting to "from - {" and "take - {." jiggery-pokery Or perhaps just a means to convert an expresiion from the df1 x1 y1 form, to x1 df1 y1 All suggestions gratefully received.
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