Hi Gavin,  no apologies needed.  I did not know if my email was junk 
mailed or buried somewhere so I thought I would try another avenue.  I 
look forward to hearing about any progress on these.  At this point, the 
t-test is not needed until I finally get to the point to publish this 
stuff.   Thanks again!

--Chris

Gavin Simpson wrote:
> On Thu, 2008-07-17 at 08:29 -0500, Christopher Chizinski wrote:
>   
>> Dear List:
>>     I am trying to run co-correspondence analysis using the package 
>> cocorresp.  Everything works correctly but I was curious if anyone knew 
>> if there was an R analog of the program for the predictive 
>> correspondence analysis and cross valuation that is in the Matlab 
>> toolbox "cocorresp"?  Everything runs in the Matlab toolbox but the 
>> program relies on PLS toolbox that must be purchased (and I am almost 
>> finished with my demo trial).  Also, if there was anyone that might be 
>> able to give me some direction on how to write a program to test the 
>> significance of the different models as mentioned in Schaffers et al. 
>> (2008). "Arthropod assemblages are best predicted by plant species 
>> composition" on p. 787.  Any pointers would be greatly appreciated. 
>>
>> Sincerely,
>> Chris
>>     
>
> Hi Chris [Apologies for not responding sooner to your private email to
> me, I've been out of the office on fieldwork and then catching up with
> the email and work backlog]
>
> Steve Juggins sent me code that implemented the crossval routine for
> CCA-PLS. I started adding this to my local cocorresp source tree, but
> didn't get round to completely getting everything working with the
> package just yet. I should be able to take another look at this at the
> weekend. Will let you know how I get on.
>
> I have had another cocorresp user interested in the permutation t-test
> you mention. I said I'd take a look at this (and I did - honest!) and it
> seemed feasible, but it is field season and I have been away quite a bit
> the past few months. It is on the radar, but won't happen for the next
> couple of weeks as I have several papers that the boss is awaiting...
>
> G
>
>   

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