r - Keep hitting the error ""loop_apply" not resolved from current namespace (plyr)" in ggplot2 with example codes -

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i keep hitting error today , download plyr github still doesn't work. restarted r-studio pc after installing plyr..

enter image description here

it appears problem may due change made way r resolves references external dlls, mentioned halfway through thread here.

adding parameter package="plyr" .call function call on line 12 of r/loop_apply.r in source (clone github), , installing package source (install.packages("<path plyr source>", type="source", repos=null)) seems fix it.


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