<html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body> I wondered whether someone ever implemented a 'transpose' procedure for array2d. As there seems to be none, I have implemented a basic fallback here: <a class="moz-txt-link-freetext" href="https://github.com/fabnicol/RMercury/blob/library/ri.m">https://github.com/fabnicol/RMercury/blob/library/ri.m</a>, line 1236. [Note: the library itself is very much work in progress, with numerous issues and loose ends. I'm just quoting it for reference to 'transpose'.] This works, but it is the basic Cate & Twigg formula. There are numerous better options around, perhaps someone knows of some free code around? Fabrice </body> </html>