Hi, I´m trying to do mirt model
After installing mirt, lattice, and stats4 in mac I run the following syntaxes:
mod1 <- mirt(data, 1, itemtype = "Rash")
But I got this error: Error in if (length(unique(colnames(data))) != ncol(data)) stop("items must have unique names in data input", :
argument is of length zero
It looks like this is the part of the code throwing the error:
Before suggesting that you file an issue for the package, it would be helpful if you could give a reproducible example, so others can help troubleshoot here.
A self-contained reprex (short for reproducible example) will help us help you, since we can be sure we're all working with/looking at the same stuff.
install.packages("reprex")
If you've never heard of a reprex before, you might want to start by reading the tidyverse.org help page. The reprex dos and don'ts are also useful.
There's also a nice FAQ on how to do a minimal reprex for beginners, below:
If you run into problems with access to your clipboard, you can specify an outfile for the reprex, and then copy and paste the contents into the forum.
reprex::reprex(input = "fruits_stringdist.R", outfile = "fruits_stringdist.md")
For pointers specific to the community site, check out the reprex FAQ.
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