I have a LaTex file in R where I have a code chunk that is calling a dataset and assigning the dimensions to an object. I want to be able to set the code to not evaluate so that I can put the variables into a text block that will show up in the pdf output.
Below is an example of what I'm trying to do using a common R dataset.
The R chunk would look like this:
<<>>=
library(MASS)
data("crabs")
obs <- as.list(dim(crabs))
vars <- as.list(dim(crabs))
@
But I want this to not show up in the output, and instead have it show up as a text block that uses the obs and vars objects to create a sentence that describes the dataset.
Here is what I have tried without luck:
{\bf Dataset Dimensions}
``The crabs data set has \newcommand\x{obs[1])} observations
and \newcommand\x{obs[2])} variables.''
If is is working correctly, it should show up in the output as a sentence that says:
"The crabs data set has 200 observations and 8 variables."
The following syntax works in .Rnw files for LaTex output to pdf.
\newline The crabs data set has \Sexpr{(obs[1])} observations and \Sexpr{(obs[2])} variables.