Displaying 8 results from an estimated 8 matches for "achristoffersen".
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christoffersen
2009 Sep 11
1
bar chart with means - using ggplot
...anprice,cut);ggdata
ggplot(ggdata,aes(y=meanprice,x=cut)) + geom_bar(fill="grey50",stat='identity')
Felipe D. Carrillo
Supervisory Fishery Biologist
Department of the Interior
US Fish & Wildlife Service
California, USA
--- On Fri, 9/11/09, Andreas Christoffersen <achristoffersen at gmail.com> wrote:
> From: Andreas Christoffersen <achristoffersen at gmail.com>
> Subject: bar chart with means - using ggplot
> To: "ggplot2" <ggplot2 at googlegroups.com>
> Date: Friday, September 11, 2009, 1:50 PM
>
> In the help pages hadley provi...
2009 Feb 03
3
cronbachs alpha - score.items(psych) vs reliability(Rcmdr)
Dear all,
I like the way the Rcmdr package computes reliability. E.g
reliability(cov(d[,c("q1", "q2", "q3", "q4", "q5", "q6")],
use="complete.obs"))
will not only give me the alpha score, but also for each variable,
alpha.score if deleted. However - when writing scripts it's very tiresome to
load the whole Rcmdr GUI just
2009 May 24
2
help with replacing factors
Hi,
In the example dataset below - how can I cahnge "gray20", to "blue"
# data
black <- rep(c("black","red"),10)
gray <- rep(c("gray10","gray20"),10)
black_gray <- data.frame(black,gray)
# none of this desperate things works
# replace(black_gray$gray, gray=="gray20","red")
#
2009 Apr 26
7
Bumps chart in R
Hi there,
I would like to make a 'bumps chart' like the ones described e.g.
here: http://junkcharts.typepad.com/junk_charts/bumps_chart/
Purpose: I'd like to plot the proportion of people in select countries
living for less then one USD pr day in 1994 and 2004 respectively. I
have already constructed a barplot - but I think a bumps chart would
be better
# The barplot and data
2009 Feb 15
1
MDS with ranking data (and transformation)
Dear Sirs and madams :-)
I am trying to teach myself multidimensional scaling. To that effect I have
collected a survey asking people to rank 10 philosophers and politicians
according to their preference. I have collected 61 answers. The data is
organized in ten columns and 61 rows. the columns are "choice_1",
"choice_2", "choice_3" etc. The cells is the name of the
2009 Mar 06
1
R and vim (gvim) on ubuntu
Dear all -
I do fret this to be a revealing beginner question - fortunately, this
mailing list have been good to me in the paste .-)
I am looking for a good R editor/environment in ubuntu. To that end, I have
decided to dive into gvim as the modality offered here seems to make sense
for editing.
I want to use Johannes Ranke's vim r-plugin, but I can't make it work.
I have the plugin
2009 Aug 13
1
"helper" lines in plot. From point to axis.
This is a very basic question. I am just wondering if there is a function
where i can choose a vector of points, and them helper lines are drawn.
I am asking because lines seams to be a cumbersome way to do this.
E.g.
x <- 1:36
plot(log(x,1.1),xlab="Number of months", ylab="Visits(1000)",main="webpage
visits")
abline(h=log(12,1.1),col="red",lty=2)
2009 Apr 21
3
ggplot2 - boxplot of variables / columns
Hi,
ggplot/qplot is great - it has really helped me do some nice things.
However, simple boxplot of different columns/variables is a bit
tricky, because of (i think) qplot's generic Y conditional on X input
form. Se below.
# Some data:
a <- rnorm(100)
b <- rnorm(100,1,2)
c <- rnorm(100,2,0.5)
# normal boxplot of a,b,c
boxplot(a,b,c) # Looks good
library(ggplot2) # loads qqplot2
#