Dear list members.
I have problems with the usage of cv.glm from the boot package. Here are some
parts of the script I wanted to use:
data <- read.table("selected_2D.csv", header=TRUE, sep=",")
…
glm.fitted <- glm("ydata$ y ~ 1 + density + vsurf_ID6 + vsurf_S ", data=data)
error <- cv.glm(data=data, glm.fitted, K=6)
ydata$y is a separate data set, where I take my independent data from. I build
an equation with some of the columns in data. Then I generate the generalized
linear model, which works. But when I try to run the last line – the cv.glm
function, I get the following error message:
Error in model.frame.default(formula = eqfull, data = list(vsurf_ID6 =
c(2.4599824, :
variable lengths differ (found for 'density')
I fear I don't get the meaning of the error message at all. The length of the
data columns are all equal. Any help would be kindly appreciated!
Best wishes,
Markus
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