Map function with 2 variables

*To*: mathgroup at smc.vnet.net*Subject*: [mg114945] Map function with 2 variables*From*: Jagra <jagra24891 at mypacks.net>*Date*: Thu, 23 Dec 2010 03:56:14 -0500 (EST)

I have a problem that comes up in a couple of situations and I've never found the right solution. I hoped I could get an idea of how to generally address these kinds of things. Say I have a function with two variables, something like a SpearmanRankCorrelation[] from the MultiVariate Statistics package: I also have matrix "m" with dimensions {3, 100} m = RandomReal[{0, 1}, {3, 100}]; Now, say I want to create a correlation matrix using the SpearmanRankCorrelation function. I can get the rank correlations between a single vector of the matrix and all the other vectors like this: SpearmanRankCorrelation[m[[1]], #] & /@ m This would give me a single row in a correlation matrix. Pretty straightforward, but now I want all 3 rows like I would get with this: {SpearmanRankCorrelation[m[[1]], #] & /@ m, SpearmanRankCorrelation[m[[2]], #] & /@ m, SpearmanRankCorrelation[m[[3]], #] & /@ m} There must be a way I can do this more directly. I must be missing something simple. Thanks.

**Follow-Ups**:**Re: Map function with 2 variables***From:*Andrzej Kozlowski <akoz@mimuw.edu.pl>