R help - Mar 2008 - Correlation matrix one side with significance

Hi there!

In my case, 

cor(d[1:20])

makes me a good correlation matrix.

Now I'd like to have it one sided, means only the left bottom side to be
printed (the others are the same) and I'd like to have * where the
p-value is lower than 0.05 and ** lower than 0.01.

How can I do this?

And another thing: Is there a way to output that table as a latex table?

Thanks,
Martin

-- 
Ihr Partner f?r Webdesign, Webapplikationen und Webspace.
http://www.roomandspace.com/
Martin Kaffanke +43 650 4514224
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Try this:

On 05/03/2008, Martin Kaffanke <technik at roomandspace.com>
wrote:
> Hi there!
>
>  In my case,
>
>  cor(d[1:20])
>
>  makes me a good correlation matrix.
>
>  Now I'd like to have it one sided, means only the left bottom side to
be
>  printed (the others are the same) and I'd like to have * where the
>  p-value is lower than 0.05 and ** lower than 0.01.
>
>  How can I do this?
d <- matrix(rexp(16, 2), 4)
corr <- cor(d)
sign <- symnum(cor(d), cutpoints=c(0.05, 0.01), corr = T,
symbols=c("***", "**", "*"), abbr=T, diag=F)

noquote(mapply(function(x, y)paste(x, format(y, dig=3), sep=''),
as.data.frame(unclass(sign)), as.data.frame(corr)))


>  And another thing: Is there a way to output that table as a latex table?
See ?latex function in Hmisc package and also xtable package
>  Thanks,
>  Martin
>
>
>  --
>  Ihr Partner f?r Webdesign, Webapplikationen und Webspace.
>  http://www.roomandspace.com/
>  Martin Kaffanke +43 650 4514224
>
> ______________________________________________
>  R-help at r-project.org mailing list
>  https://stat.ethz.ch/mailman/listinfo/r-help
>  PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
>  and provide commented, minimal, self-contained, reproducible code.
>
>
>

-- 
Henrique Dallazuanna
Curitiba-Paran?-Brasil
25? 25' 40" S 49? 16' 22" O

On 3/5/08, Martin Kaffanke <technik at roomandspace.com>
wrote:
>  Now I'd like to have it one sided, means only the left bottom side to
be
>  printed (the others are the same) and I'd like to have * where the
>  p-value is lower than 0.05 and ** lower than 0.01.
Look here [1], at "Visualizing Correlations". You might find
interesting the example of a plotted correlation matrix.

Liviu

[1] http://www.statmethods.net/stats/correlations.html