r

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Order on a list

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.[详细]

2023-04-11 22:37 分类：问答
How to test if list element exists?

Problem I would like to test if an element of a list exists, here is an example foo <- list(a=1) exists(\'foo\')[详细]

2023-04-11 21:30 分类：问答
Is R and Hadoop related? [closed]

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[详细]

2023-04-11 21:30 分类：问答
R: Getting attribute values as a vector

I have a object with some attributes whose values are integers, i.e. h =: attr(,\"foo\") [1] 4 attr(,\"bar\")[详细]

2023-04-11 21:26 分类：问答
XPT to CSV Conversion? [closed]

Closed. This question is seeking recommendations for books, tools, software libraries, and more. It does not meet Stack Overflow guidelines. It is not currently accepting answers.[详细]

2023-04-11 20:34 分类：问答
Using a result to index a data.frame

I have adata.frame named pp that looks like this: > head(pp) X02RX03NX04KX04NX04RX06IX06NX08JX08PX09OX11O[详细]

2023-04-11 20:20 分类：问答
Data dictionary packing in R

I am thinking of writing a data dictionary function in R which, taking a data frame as an argument, will do the following:[详细]

2023-04-11 20:10 分类：问答
What is read.data in R? Why can't I find it in any docs?

I\'m trying to debug my first R script and I came across this line: data <- read.data(dir, indiv, label)[详细]

2023-04-11 19:59 分类：问答
Scatterplot with too many points

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[详细]

2023-04-11 19:36 分类：问答
Convert .mat file to R-compliant file

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?[详细]

2023-04-11 19:04 分类：问答