Displaying 20 results from an estimated 4000 matches similar to: "superimposing histograms"
2006 Jun 28
2
superimposing histograms con't
Earlier, I posted the following question:
I want to superimpose histograms from three populations onto the same graph,
changing the shading of the bars for each population. After consulting the
help files and the archives I cannot find out how to do this (seemly)
simple graph. To be clear, I want
- a single x axis (from -3 to 18)
- three groups of bars forming the histograms of each population
2006 Jun 28
0
superimposing histograms con't [Broadcast]
I wrote some code to do this. It only works with 2 groups (that's all I
needed), but could probably be generalized. It got my graph made, and I
haven't needed a graph like this one again, so I never went back to really
clean it up.
It works by first plotting both sets of rectangles, then going back over the
ones that had the first bar totally covered by the second.
Hope this helps,
2004 Sep 30
1
histograms with more than one variable
Hello. I want to plot the distribution of a continuous variable (y) in
each of two groups on the same graph as histograms. I suppose one could
call this a 2-d histogram? Can this be done in R? Here is a typical
data.set:
y group
1.2 1
3.3 1
2.4 2
5.7 1
0.2 2
etc.
Bill Shipley
Subject Matter Editor, Ecology
North American Editor, Annals of
2004 Oct 01
3
controlling colour in Trellis histogram
Hello. I am sorry for posting a (seemingly) simple question, but I have
just spent 2 hours trying to find the answer, without success. I want
to make a histogram with conditioning on a factor, using Trellis
graphics. However, I do not want any colours (only black and white)
either in the histograms or in the strip. There must be some simple
argument but I can’t find it. Here is my code so
2010 Aug 13
1
Lattice: Superimposing histograms with different colors and transparency effects
Dear users,
I would like to plot several histograms superimposed on the same panel
with different colors, with superimposed polygons appearing with
transparency effects. I also want estimated densities to appear on the
same plot. For several reasons, including that I like it, I want to use
the lattice package.
I have several questions regarding the use of the 'histogram' function
with a
2005 Nov 29
1
Superimpose Histograms
Hi all,
I have data which is represented as a histogram and want to add more
data / another histogram to this plot using another color. That is I
need to superimpose multiple histograms.
But have no idea how to do this.
Can anybody please give me a hint?
Thanks,
Andreas
--
Andreas Wilm
Institut fuer Physikalische Biologie
Heinrich-Heine-Universitaet Duesseldorf
2008 May 28
1
superposing barplots having different scales
Hello. I know how to make a bar plot in which a numeric y variable is
plotted against some grouping variable X (say, groups A, B, C) when this
grouping variable is subdivided into each of two subgroups; so the bars
would be: (group A subgroup 1) beside (group A subgroup 2), then (group B
subgroup 1) beside (group B subgroup 2), and so on. This is done using the
beside=TRUE argument in the
2007 Sep 20
2
Superimposing vector polygons over raster grid in a plot
Hello:
I would like to superimpose vector polygons (state outlines) from a
Shape file on top of a satellite image,
imported into a SpatialGridDataFrame from GEOTIFF via gdal_translate and
readGDAL.
When I plot polygon and point shape files in R, into
SpatialPointDataFrame and SpatialPolygonDataFrame,
the two feature sets line up geographically, so it seems logical that a
SpatialGridDataFrame
2011 Jul 06
1
superimposing network graphs
Dear all,
I have a undirected network (g), representing all the sexual relationships that ever existed in a model community.
I also have a directed edgelist (e) which is a subset of the edgelist of g. e represents the transmission pathway of HIV.
Now I would like to superimpose the picture of the sexual relationships with arrows in a different colour, to indicate where in the network HIV was
2009 Sep 24
1
superimposing xyplots on same scale
I have two xyplots that i want to superimpose (code below). By default they
are displayed on slightly different y scales (one runs from 10 to 25, the
other from 10 to 30). I would like to force them both onto the same scale
(10 to 30) so the relation between the two is clear. Is there a way to do
this?
thanks much
pct_compl_chart <- xyplot(pct_compl ~ date,
col="red",
2008 Jul 05
3
trying to superimpose a line plot onto a histogram
Hello,
I'm trying to superimpose a line plot onto a histogram but I'm not having
any luck. I've attached the dataset. What I did was:
> hist(data,freq=F)
Now I'm trying to superimpose the following points with a line connecting
them onto the histogram:
x y
100 0.535665393824959
200 0.212744329736556
300 0.0844933242968584
400 0.0335572838043417
500
2004 Oct 04
3
(off topic) article on advantages/disadvantages of types of SS?
Hello. Please excuse this off-topic request, but I know that the
question has been debated in summary form on this list a number of
times. I would find a paper that lays out the advantages and
disadvantages of using different types of SS in the context of
unbalanced data in ANOVA, regression and ANCOVA, especially including
the use of different types of contrasts and the meaning of the
2003 Dec 11
2
typeIII SS for lme?
To avoid angry replies, let me first say that I know that the use of
Type III sums of squares is controversial, and that some statisticians
recommend instead that significance be judged using the non-marginal
terms in the ANOVA. However, given that type III SS is also demanded by
some… is there a function (equivalent to drop1 for lm) to obtain type
III sums of squares for mixed models using the
2005 Sep 01
1
making self-starting function for nls
Hello. Following pages 342-347 of Pinheiro & Bates, I am trying to
write a self-starting nonlinear function (a non-rectagular hyperbola) to
be used in nonlinear least squares regression (and eventually for a
mixed model). When I use the getInitial function for my self-starting
function I get the following error message:
> getInitial(photo~NRhyperbola(Irr,theta,Am,alpha,Rd),dat)
Error
2003 Nov 04
3
help with lme()
Hello. I am trying to determine whether I should be using ML or REML
methods to estimate a linear mixed model. In the book by Pinheiro &
Bates (Mixed-effects models in S and S-PLUS, page 76) they state that
one difference between REML and ML is that « LME models with different
fixed-effects structures fit using REML cannot be compared on the basis
of their restricted likelihoods. In
2005 Feb 15
1
shrinkage estimates in lme
Hello. Slope estimates in lme are shrinkage estimates which pull the
OLS slope estimates towards the population estimates, the degree of
which depends on the group sample size and the distance between the
group-based estimate and the overall population estimate. Although
these shrinkage estimates as said to be more precise with respect to the
true values, they are also biased. So there is a
2005 Apr 19
1
Strange behavior in Lattice when superimposing
Hi,
I am trying to do a simple superimposing of two density plots and am
seeing strange behavior (I haven't seen this reported elsewhere). This
little snipit will make it apparent...
a = rnorm(10)
b = rnorm(100, mean=-2, sd=0.5)
densityplot( ~ a + b)
This is supposed to superimpose the two distributions on the plot, as
if they were in different "groups". But the resulting
2004 Apr 26
2
mixed model with binomial link?
Hello. I have to fit a mixed model from a repeated measures split-plot
experiment in which the response variable is binary. This requires a
generalised linear mixed model in which I can specify a binomial
distribution. I can’t find the appropriate package in R. I have looked
at glmmML, but it doesn’t seem to allow any mixed structure beyond a
simple 2-level one. Can anyone point me to the
2006 Apr 13
1
obtaining residuals from lmer
Hello. I cannot find out how to extract the residuals from a mixed model
using the lmer function. Can someone help?
Bill Shipley
North American Editor, Annals of Botany
Editor, "Population and Community Biology" series, Springer Publishing
Département de biologie, Université de Sherbrooke,
Sherbrooke (Québec) J1K 2R1 CANADA
Bill.Shipley@USherbrooke.ca
2008 Apr 01
1
superimpose histogram on biplot
Hi all,
I've been trying to figure out how to superimpose a histogram on a
biplot that shows the relative contribution of each axis. I have
been using the NIPALS function (http://biomserv.univ-lyon1.fr/~dray/
files/softwares/nipals.R) to run principal component analyses. Here
is a toy example.
source("http://biomserv.univ-lyon1.fr/~dray/files/softwares/nipals.R")