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2017 Sep 09
0
Avoid duplication in dplyr::summarise
Hi Lars
I am not very sure what you really want. However, I am suggesting the
following code that enables (1) to obtain the full summary of your data and
(2) retrieve only mean of X values as function of factors f1 and f2.
library(tidyverse)
library(psych)
df <- data.frame(matrix(rnorm(40), 10, 4),
f1 = gl(3, 10, labels = letters[1:3]),
f2 = gl(3, 10, labels
2017 Sep 09
2
Avoid duplication in dplyr::summarise
Dear group,
Is there a way I could avoid the sort of duplication illustrated below?
i.e., I have the same dplyr::summarise function on different group_by
arguments. So I'd like to create a single summarise function that could be
applied to both. My attempt below fails.
df <- data.frame(matrix(rnorm(40), 10, 4),
f1 = gl(3, 10, labels = letters[1:3]),
f2 =
2017 Sep 09
1
Avoid duplication in dplyr::summarise
Hi Lars,
Two comments:
1. You can achieve what you want with a slight modification of your
definition of s(), using the hint from the error message that you need an
argument '.':
s <- function(.) {
dplyr::summarise(., x1m = mean(X1),
x2m = mean(X2),
x3m = mean(X3),
x4m = mean(X4))
}
2. You have not given a great test case in
2011 Jan 26
1
boxplot - code for labeling outliers - any suggestions for improvements?
Hello all,
I wrote a small function to add labels for outliers in a boxplot.
This function will only work on a simple boxplot/formula command (e.g:
something like boxplot(y~x)).
Code + example follows in this e-mail.
I'd be happy for any suggestions on how to improve this code, for example:
- Handle boxplot.matrix (which shouldn't be too hard to do)
- Handle cases of complex
2006 Feb 08
2
rotating axis / mtext labels
Hello list.
Is it possible to use par(srt=45) to rotate text by 45 degrees along the
x-axis of a plot. Using:
<code>
x_names<-c("C57 Nv", "C57 Vacc", "129 Nv", "129 Vacc", "IFNgR Nv", "IFNgR Vacc")
par(srt=45)
mtext(font=2, x_names, side=1, line=1, at=l, cex=1.2)
par(srt=0)
</code>
doesn't seem to work in R 2.2.0 on SUSE linux.
Suggestions would...
2011 Jan 24
1
How to measure/rank ?variable importance when using rpart?
--- included message ----
Thus, my question is: *What common measures exists for ranking/measuring
variable importance of participating variables in a CART model? And how
can
this be computed using R (for example, when using the rpart package)*
---end ----
Consider the following printout from rpart
summary(rpart(time ~ age + ph.ecog + pat.karno, data=lung))
Node number 1: 228 observations,