Here's an example: load 'viewmat' ]Y=:3 3$(5#255),4#0 255 255 255 255 255 0 0 0 0 Y viewmat i.10 Y viewmat i.1000 Y viewmat i.1000000 Linda
-----Original Message----- From: Programming [mailto:[email protected]] On Behalf Of Linda A Alvord Sent: Tuesday, January 26, 2016 11:26 AM To: [email protected] Subject: Re: [Jprogramming] Monday Morning Wake Up Exercise I thought a 1 result meant the two images are the same. The first comparison I thougth confirmed that the two images that look alike to me really are the same. The colors seem ok but I wasn't sure. Grade 4 involves large and small numbers. Here are a million shades of yellow. However as viewmat get mor complex, comparison is difficult. I'm glad to know that result is not true. Maybe the result should be some hint like _ so you wouldn't trust the result. Linda -----Original Message----- From: Programming [mailto:[email protected]] On Behalf Of Dan Bron Sent: Tuesday, January 26, 2016 10:28 AM To: J Programming Subject: Re: [Jprogramming] Monday Morning Wake Up Exercise Linda wrote: > (Y viewmat i.4)-:Y4 viewmat i.4 > (Y4 viewmat i.5)-:Y5 viewmat i.5 > Or maybe this should be: > (Y viewmat i.5)-:Y5 viewmat i.5 I’m not sure what you’re trying to test with those -:s, but note that in the standard J IDEs, the result of viewmat (of any input) is always the same; specifically, it’s always i.0 0 (a 0x0 square of integers). So, for example, (viewmat ?~ 13) -: viewmat #:i.67 1 Note that both the arrays ?~13 and #:i.67 and their respective viewmat visualizations are completely different animals. The -: is telling you nothing (except that viewmat is defined to always return i.0 0). -Dan ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
