## matlisp-users — General discussion list.

You can subscribe to this list here.

2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2011 2012 Jan Feb Mar Apr (9) May (2) Jun (2) Jul (3) Aug (2) Sep Oct Nov Dec Jan Feb Mar Apr May (2) Jun Jul (8) Aug Sep Oct (5) Nov Dec Jan (2) Feb (7) Mar (14) Apr May Jun (16) Jul (7) Aug (5) Sep (28) Oct (9) Nov (26) Dec (3) Jan Feb (6) Mar (4) Apr (16) May Jun (8) Jul (1) Aug (2) Sep (2) Oct (33) Nov (13) Dec Jan (2) Feb (16) Mar Apr (2) May (35) Jun (8) Jul Aug (2) Sep Oct Nov (8) Dec (21) Jan (7) Feb Mar Apr (1) May (8) Jun (4) Jul (5) Aug (18) Sep (2) Oct Nov (3) Dec (31) Jan Feb Mar Apr (3) May (1) Jun (7) Jul Aug (2) Sep (3) Oct Nov (1) Dec Jan Feb Mar (2) Apr (11) May Jun Jul Aug Sep Oct Nov Dec (2) Jan Feb Mar Apr (4) May Jun Jul Aug Sep Oct Nov Dec (10) Jan Feb Mar Apr (1) May (1) Jun Jul (2) Aug (1) Sep Oct (1) Nov Dec (1) Jan Feb Mar Apr May (5) Jun (1) Jul Aug Sep Oct Nov Dec Jan (1) Feb (1) Mar Apr (1) May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar (1) Apr May Jun Jul Aug Sep Oct Nov (1) Dec (1) Jan Feb (1) Mar (1) Apr May (2) Jun (1) Jul (1) Aug Sep Oct Nov Dec
S M T W T F S

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26
(2)
27

28

29

30

31

Showing 2 results of 2

 Re: [Matlisp-users] Need help w/ computing sums From: Tunc Simsek - 2000-08-26 19:49:43 ```Hmm, that looks like a windowed fft. If that's the case you may want to try (HELP FFT) Richard James Panturis Giuly wrote: > > Is there a good way to compute the following for a large matrix? > > (v's are column vectors of V, u's are vectors of U) > > I need the value of each line; I'm sort of dragging one matrix over > the other (horizontally) and adding the elements of the parts that > touch. > > [v3] + [u1] > > [v2 v3] + [u1 u2] > > [v1 v2 v3] + [u1 u2 u3] > > [v1 v2] + [u2 u3] > > [v1] + [u3] > I'm guessing that the intermediary results form another array of length 2n-1. I can't see any immediate way of doing this using the higher level matlisp interfaces. But you may be able to do something clever with the direct interfaces. Try (HELP BLAS) and (HELP LAPACK). Regards, Tunc > > _______________________________________________ > Matlisp-users mailing list > Matlisp-users@... > http://lists.sourceforge.net/mailman/listinfo/matlisp-users ```
 [Matlisp-users] Need help w/ computing sums From: Richard James Panturis Giuly - 2000-08-26 06:59:58 ```Is there a good way to compute the following for a large matrix? (v's are column vectors of V, u's are vectors of U) I need the value of each line; I'm sort of dragging one matrix over the other (horizontally) and adding the elements of the parts that touch. [v3] + [u1] [v2 v3] + [u1 u2] [v1 v2 v3] + [u1 u2 u3] [v1 v2] + [u2 u3] [v1] + [u3] ```

Showing 2 results of 2