# NOT RUN {
df = cov(mtcars)
umx_is_cov(df)
df = cor(mtcars)
umx_is_cov(df)
umx_is_cov(mxData(df[1:3,1:3], type= "cov", numObs = 200))
umx_is_cov(df, boolean = TRUE)
umx_is_cov(mtcars, boolean = TRUE)
# }
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