There seems to be a difference between levels and labels of a factor in R. Up to now, I always thought that levels were the \'real\' name of factor levels, and labels were the names used for output (s
I am trying to ma开发者_C百科ke a bar graph where the largest bar would be nearest to the y axis and the shortest bar would be furthest. So this is kind of like the Table I have
R has some开发者_如何学Python tools for memory profiling, likeRprofmem(), Rprof() with option \"memory.profiling=TRUE\" and tracemem(). The last one can only be used on objects, and hence is useful to
Does anyone know what a slot is in R? I did not find the explanation of its meaning. I get a recursive definition:
I have a number of columns that I would like to remove f开发者_如何学运维rom a data frame. I know that we can delete them individually using something like:
I get an error when using an R function that I wrote: Warning messages: 1: glm.fit: algorithm did not converge
I was wondering about how to write do-while-style loop? I found this post: you can use repeat{} and check conditions whereever using if()and
I\'d like to take data of the form before = data.frame(attr = c(1,30,4,6), type=c(\'foo_and_bar\',\'foo_and_bar_2\'))
I seem to be sharing a lot of code with coau开发者_开发知识库thors these days. Many of them are novice/intermediate R users and don\'t realize that they have to install packages they don\'t already ha
I have an integer which I want to convert to class Date. I assume I first need to convert it to a string, but how?
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