Displaying 20 results from an estimated 3000 matches similar to: "beginner's question: Graphical presentation of t test"
2011 Aug 15
3
write.table extra column
In the following data.frame there are 6 columns, but 7 are written to
the CSV file.
install.packages("pmlr")
library(pmlr)
data(enzymes)
write.table(enzymes, sep=",", eol="\n",file="albert.csv")
2002 Dec 27
2
RSvgDevice & sapply(plotmeans)
Hi,
anybody know why this not works for several
plots ?
When i set onefile=T the plots are stacked one about another
, onefile=F only the first plot is shown in AllbusMeansPlots.svg.
[h2 is a data.frame]
......hist and sapply works for several plots nice with RSvgDevice !
Maybe setting the title after apply is a problem, but until yet i didn't
found a better solution ?
library(RSvgDevice)
2011 Nov 05
1
Correlation between matrices
> regions = c('cortex', 'hippocampus', 'brain_stem', 'mid_brain',
'cerebellum')
> mice = paste('mouse', 1:5, sep='')
> for (n in c('Cu', 'Fe', 'Zn', 'Ca', 'Enzyme')) {
+ assign(n, as.data.frame(replicate(5, rnorm(5))))
+ }
> names(Cu) = names(Zn) = names(Fe) = names(Ca) = names(Enzyme) =
2001 May 24
2
New Package: gregmisc
I've thrown a couple of useful functions into a new package "gregmisc" and
uploaded them to ftp://ftp.ci.tuwien.ac.at/incoming/gregmisc_0.1.1.tgz
Here's DESCRIPTION:
Package: gregmisc
Description: Misc Functions written/maintained by Gregory R. Warnes
Title: Greg's Miscellaneous Functions
Version: 0.1
Date: 2001/05/24
Depends: R
Maintainer: Gregory R. Warnes
2003 Jul 09
2
Showing limits on line graphs
Is there a function that would allow me to create a line graph of some central tendency, such as mean, with limits indicated by a vertical line at each data point, i.e. SD? It's a fairly common type of graphic, but in looking through examples I have been able to find, I have found no function for such a graph.
Thanks in advance,
Harvey
2003 Feb 21
5
help
Hi,
help.I would like to plot the mean and standard deviation against a factor
in the xaxis- in other words I want an errorplot. I also want to put the
standard deviation like a "T" on top of a barplot. How can do this in R
Bragadeesh
2002 Sep 23
3
New version of gregmisc package
Version 0.6.0 of the gregmisc package has just been released on CRAN.
Description:
===========
Package: gregmisc
Description: Misc Functions written/maintained by Gregory R. Warnes
Title: Greg's Miscellaneous Functions
Version: 0.6.0
Date: 2002/09/23
Maintainer: Gregory R. Warnes <Gregory_R_Warnes at groton.pfizer.com>
Author: Gregory R. Warnes. Includes code provided by Ben
2002 Sep 23
3
New version of gregmisc package
Version 0.6.0 of the gregmisc package has just been released on CRAN.
Description:
===========
Package: gregmisc
Description: Misc Functions written/maintained by Gregory R. Warnes
Title: Greg's Miscellaneous Functions
Version: 0.6.0
Date: 2002/09/23
Maintainer: Gregory R. Warnes <Gregory_R_Warnes at groton.pfizer.com>
Author: Gregory R. Warnes. Includes code provided by Ben
2003 Jun 14
3
Confidence intervals plot
Hi all!!
I am trying to plot several confidence intervals in a unique plot. That is, for each x, I have a confidence interval for a parameter related to x and I would like to plot them in the same plot, in order to compare them. The plot would look like some parallel vertical lines, each one corresponding to a x value. Their extrem points would be the confidence interval limits.
I do not know if
2002 Oct 31
1
Re: gregmisc version 0.7.3 now available
Dear Greg,
Thanks for the new release. The decomposition of the SSQ is just what I need!
Regards,
Martin.
Martin Hoyle,
School of Life and Environmental Sciences,
University of Nottingham,
University Park,
Nottingham,
NG7 2RD,
UK
Webpage: http://myprofile.cos.com/martinhoyle
>>> gregory_r_warnes at groton.pfizer.com 10/30/02 07:16PM >>>
Version 0.7.3 of the gregmisc package
2009 Sep 12
1
How to visualize paired t-test results?
I would like to know if you have any suggestions how to visualize the
results from a paired t-test (see the example data below). I tried to
produce plots that show the mean and CI's from the original data and the
estimate of the difference between means and the confidence intervals (see
below) from the t-test. I really don't know what would be the best way to
graphically display the
2003 Nov 25
3
plot mean + S.E. over time
Hi, there!
I finally became a disciple of 'R', after having lost years of my life
handling data with a popular, rather wide-spread spreadsheet-software.
Now I want to plot the results of many runs of my simulation over time,
so that the means +/- Standard error are on the y-axis, and time on the
x-axis.
I have tried 'boxplot', with timesteps as the grouping variable, but did
2011 Aug 16
1
deSolve, extracting variable values from inside ode function
I'm just getting to grips with using ode function and have used the
examples and vignettes to produce a small model of a one-pool,
michaelis-menten, enzyme kinetic reaction. The rate of flux of substrate
into pool A is constant (fluxoa) however the rate of flux out of pool A
is controlled by the HMM equation (v = Vmax/ ( 1 + (Km / Concentration A
)) ). This function works fine and
2009 Sep 18
1
Why don't formulas that work for lm() work for plotmeans?
I know that simple line plots showing a point representing the mean + an
error bar are difficult in R, but I am clearly missing something. I simply
want to show how a the mean and 95% CI of a chemical concentration (y) vary
over space (x) under four temperature regimes (T; a categorical factor).
plotmeans, in the gplots library, should allow for such a figure, right?
After all, it invokes lm()
2012 May 14
1
Plot
Hello,
I am trying to make a plot of the rates of an enzyme against three different protein concentrations (there are 45 rates in total and split up into 3 groups of 15, each receiving one of the 3 protein concentrations). When I enter the following code I instead get 3 separate boxplots for each of the three different protein concentrations ...
plot(rate ~ ferm, data=LDH, col=LDH$rate,
2007 May 21
4
Just upgraded to 1.0.0, should render_text isn''t working for me
I finally got around to upgrading from 0.8.2 (!!). I had a spec which
looked like
specify "should render abc123" do
controller.should_render :text => "abc123"
get :key
end
With 1.0.0, the new spec is
it "should render abc123" do
get :key
response.should render_text("abc123")
end
However it doesn''t work, giving me the error:
undefined
2009 Nov 06
2
Adjusting Yaxis (ylim) limits on a plotMeans(DV, IV1, IV2, error.bars="se")
Hello everyone,
I have tried to look for this everywhere and so far have no luck. I have a
plotMeans(DV, IV1, IV2, error.bars="se") graph that plots my data
(DV-continuous, IVs are factors, IV1 - two levels, IV2-four levels). I am
trying to increase a scale of my y-axis (to be consistent with my other
graphs), but unfortunately nothing works with "plotMeans" function, which
2011 Nov 09
2
plot separate groups with plotmeans()
Hi,
I often use plotmeans() from the gplots package to quickly visualize a
pattern of change. I would like to be able to plot separate lines for
different groups, but the function gives an error when a grouping
variable is included in the formula argument.
For instance,
> require(gplots)
> x <- data.frame(Score=rnorm(100), Time=rep(1:10, 10),
2013 Apr 28
3
Can't register to Asterisk 1.6 with old Aastra phones
We have a new customer with a lot of old phones like the 9133i. They
won't register, and we see some very strange behavior with them. If
the SIP peer exists, they simply fail silently, with no error in the
CLI or the messages log. Nothing works, but no errors.
If the peer does not exist, it's clear that it's registering improperly:
[2013-04-28 13:34:31] NOTICE[3058] chan_sip.c:
2005 Dec 01
8
Impaired boxplot functionality - mean instead of median
Hello to all users and wizards.
I am regulary using 'boxplot' function or its analogue - 'bwplot' from
the 'lattice' library. But they are, as far as I understand, totally
flawed in functionality: they miss ability to select what they would
draw 'in the middle' - median, mean. What the box means - standard
error, 90% or something else. What the whiskers mean -