[Solved] Combine multiple paired data frames from two lists

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Given the explanation of your problem, the following may work:

# get all overlapping names
bindNames <- intersect(names(ww), names(dd03))
# get a list of rbinded data.frames, keeping unique observations
newList <- lapply(bindNames, function(i) unique(rbind(ww[[i]], dd03[[i]])))

If at this point, you want to append all of your data.frames into a single data.frame, you can once again use lapply.

newDataFrame <- as.data.frame(lapply(newList, rbind))

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solved Combine multiple paired data frames from two lists