Hi experts,
I just started to learn R today, and tried to work with an add-on
package sem. I have a version of 2.3.1 on MacOS X 10.4.6 with sem put
under /Library/Frameworks/R.framework/Versions/2.3/Resources/library
However when I typed
library(sem)
the following error showed up:
Error in library(sem) : 'sem' is not a valid package -- installed <
2.0.0?
Why is this?
Thank you,
Gang Chen
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