Nothing
library(testthat)
library(OpenMx)
a <- factor(sample(c('a', 'b', 'c'), size=100, replace=T))
b <- factor(a, levels=c('a', 'b', 'c', 'd')) #create factor is unused level 'd'
ma <- mxFactor(a, levels=levels(a))
mb <- mxFactor(b, levels=levels(b))
#mb[mb %in% 'c'] <- 'd' #make 'c' the unused level instead of 'd'
ds <- data.frame(a=ma, b=mb)
expect_error(omxAugmentDataWithWLSSummary(mxData(ds, 'raw')),
"fake.data: variable 'b' has a zero frequency outcome 'd'.")
Bollen1 <- Bollen
Bollen1[1,'y1'] <- NA
omxCheckError(omxAugmentDataWithWLSSummary(mxData(Bollen1[, 1:8], 'raw')),
"fake.data: all continuous data with missingness (column 'y1') cannot be handled using the cumulants method. Use na.omit(yourDataFrame) to remove rows with missing values or use allContinuousMethod='marginals' or use maximum likelihood")
ds <- data.frame(a=a, b=ma)
omxCheckError(omxAugmentDataWithWLSSummary(mxData(ds, 'raw')),
"Don't know how to interpret unordered factor 'a' as numeric")
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.