R – use rbind on multiple variables with similar names

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That is the wrong way to handle related items. Better to use a list or dataframe, but you will probably find out why in due course. For now:

do.matrix <- do.call(rbind, lapply( ls(patt="variable"), get) )

Or:

do.matrix <- do.call(rbind, lapply( paste0("variable", 1:10) , get) )

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