R help - Jun 2007 - problems with matrix, list and other..

hi

can anyone help me to solve these problems?

i have:
1) "d" matrix with 1096 rows;
for example, 
d[2]=        
                   [,1]           [,2]          [,3]
[1,] 0.1192566 0.0000000 0.0000000
[2,] 0.0000000 0.1065938 0.0000000
[3,] 0.0000000 0.0000000 0.1038888

if I
class (d[2]) = "list" 
solve(d[2]) = error!!!

2) "e" list with 1096 rows;
for example
e[2]2[[1]]
[1] -1.0892216 -0.7304947 -1.2883680

d[2]%*%t(e[2])
this is the error: requires numeric matrix/vector arguments

i've tried to coerce "e" to a matrix, but it's doesn't
work...

in the end.. i'd like this:
for (i in (1:1096)) {solve(d[i])*t(e[i])}

help me, please :)

Vincenzo
-- 
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You only got what you deserved when not reading the manual...
R-Intro, Chapters 5 and 6, page 26 in particular.
http://cran.r-project.org/doc/manuals/R-intro.pdf

Petr


billycorg napsal(a):
> hi
> 
> can anyone help me to solve these problems?
> 
> i have:
> 1) "d" matrix with 1096 rows;
> for example, 
> d[2]=        
>                    [,1]           [,2]          [,3]
> [1,] 0.1192566 0.0000000 0.0000000
> [2,] 0.0000000 0.1065938 0.0000000
> [3,] 0.0000000 0.0000000 0.1038888
> 
> if I
> class (d[2]) = "list" 
> solve(d[2]) = error!!!
> 
> 2) "e" list with 1096 rows;
> for example
> e[2]2> [[1]]
> [1] -1.0892216 -0.7304947 -1.2883680
> 
> d[2]%*%t(e[2])
> this is the error: requires numeric matrix/vector arguments
> 
> i've tried to coerce "e" to a matrix, but it's
doesn't work...
> 
> in the end.. i'd like this:
> for (i in (1:1096)) {solve(d[i])*t(e[i])}
> 
> help me, please :)
> 
> Vincenzo
-- 
Petr Klasterecky
Dept. of Probability and Statistics
Charles University in Prague
Czech Republic