And I wish I could have thought of just one of these for myself :-) Thanks, Matthew.
2009/8/13 Raul Miller <[email protected]>: > On Thu, Aug 13, 2009 at 7:49 AM, John > Randall<[email protected]> wrote: >> Dan Bron wrote: >>>> Suppose I have some data, and some default values to >>>> use in case there is no data: >>>> data =. a:,(1;2;3),a:,(3;2) >>>> fill =. 10 20 30 40 50 60 70 >>>> The result I want is: >>>> 10;1;2;3;50;3;2 >>> >>> I prefer the mask}data,:fill idiom: >>> >>> (10;1;2;3;50;3;2) -: (data=a:)}data ,: <"0 fill > ... >> >> And I like the selection vector approach: sv {"_1 x,.y . >> >> (10;1;2;3;50;3;2)-:(data=a:) {"_1 data,.<"0 fill > ... > > And I prefer the arithmetic approach > > (10;1;2;3;50;3;2) -: <"0 ({.&> data) + fill * data=a: > 1 > > -- > Raul > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
