[R] Has anyone used SIAR package add on?

[Mark Difford]

On Nov 12, 2011 at 8:29pm Alex wrote:

> Has anyone used SIAR package add on?

I posted a reply to an earlier question from you on this subject. See
http://r.789695.n4.nabble.com/Errors-in-SIAR-td4029804.html. In it I note
that there are problems with the function from siar (not SIAR) you are
using, but that this may not be "your" problem, that the function calls for
matrices (you were using data frames), and that you are unlikely to get
further help on this until you post your data (or data that resemble yours).

It's not that people don't want to help you, but you have to give them
something to work with (see the "famous" footer of this message). One of the
demos in the siar package mostly works, the other one does not. It's
possible that there is a minor "glitch" somewhere, which could easily be
fixed, so that given data in the correct format you get a result.

Why don't you dput() a subset of your data, so that anyone who is interested
in helping you can have a go? If your data set is called myData, and is
stored as a data frame, then do something like the following and copy the
result of dput() into your next email. Of course, if your data set has many
rows then you want to adjust the "by" argument (increase it). Twenty to
thirty rows should be sufficient.

myPartData <- myData[seq(1, nrow(myDat), by=3), ]
dput(myPartData)

Regards, Mark.

-----
Mark Difford (Ph.D.)
Research Associate
Botany Department
Nelson Mandela Metropolitan University
Port Elizabeth, South Africa
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