[R] Baffled: triggering error message with an sd result in odfWeave?

David Winsemius dwinsemius at comcast.net
Mon Dec 15 17:40:11 CET 2008

I think it because you are trying to use the if-else control  
construct, when you should be using the ifelse function:


Try (perhaps):
traindev <- ifelse( (trainlength>0), round(sd(trainscores, na.rm=T), 
1) , "")

You do seem to be mixing types, though, so perhaps you should use NA  
instead of "".

David Winsemius

On Dec 15, 2008, at 11:12 AM, Tubin wrote:

> I hope someone can point out my stupid error, because I'm baffled.
> I am calculating a bunch of variable values and then placing them in a
> document using odfWeave tags.
> This is working very nicely for every spot except one.
> One of the values I calculate is traindev:
> traindev <- if (trainlength>0) round(sd(trainscores, na.rm=T),1)  
> else ""
> when I try to insert this traindev value anywhere in my odfWeave  
> document
> (using \Sexpr{traindev} ), I get the following error:
> Start tag expected, '<' not found
> Error: 1: Start tag expected, '<' not found
> Another formula,
> postsd<- if (postlength>0)  round(sd(postscores, na.rm=T),1)  else ""
> does not trigger the same error.
> It's not something strange with the variable name; give any other  
> value to
> that variable and odfWeave works just fine.  It's not the spot on the
> document; any other tag works great in that spot and but traindev  
> triggers
> the error wherever I try to put it.
> I've spent a horrendously long time trying to figure it out. Can  
> anyone help
> me out?
> R version is 2.7.1
> odfWeave is whatever the latest version is
> os is Mac OS10.5.5
> -- 
> View this message in context: http://www.nabble.com/Baffled%3A-triggering-error-message-with-an-sd-result-in-odfWeave--tp21016679p21016679.html
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