I\'ve encountered an application where I need to sort a data.frame by colum开发者_如何学Gon numbers, and none of the usual solutions seem to allow that.
Problem I would like to test if an element of a list exists, here is an example foo <- list(a=1) exists(\'foo\')
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical andcannot be reasonably answered in its current form. For help clari
I have a object with some attributes whose values are integers, i.e. h =: attr(,\"foo\") [1] 4 attr(,\"bar\")
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I have adata.frame named pp that looks like this: > head(pp) X02RX03NX04KX04NX04RX06IX06NX08JX08PX09OX11O
I am thinking of writing a data dictionary function in R which, taking a data frame as an argument, will do the following:
I\'m trying to debug my first R script and I came across this line: data <- read.data(dir, indiv, label)
I am trying to plot two variables where N=700K. The problem is that there is too much overlap, so that the plot become开发者_Go百科s mostly a solid block of black. Is there any way of having a graysca
I am in the need of converting a MATLAB .mat file in something that can be read from R. Do you know some tools that can be used to perform s开发者_如何学Gouch operation?
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