Displaying 20 results from an estimated 1500 matches similar to: "Plotting barplot and scatterplot on same device - x-axis problem"
2008 Oct 21
5
how to plot the histogram and the curve in the same graph
i want to plot the histogram and the curve in the same graph.if i have a set
of data ,i plot the histogram and also want to see what distribution it
was.So i want to plot the curve to know what distribution it like.
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2011 Apr 15
3
Rsquared for anova
I calculate an anova test in the following way:
expdata<-read.table("/home/dorien/UA/meta-music/optimuse/optimuse1-build-desktop/results/results_processedCP",
header=TRUE)
2008 Feb 15
1
How to estimate the parameters of differential equations from data
Hello list
I have a theoretical differential equation model (two coupled differential
equations) describing the acidification of dairy cultures in milk:
dX/dt = f(H, param)*X
dH/dt = g(param)*dX/dt
pH = -log10(H)
I also have actual data of the same.
I would like to estimate the parameters of the theoretical model from real
data, but don't know how to go about it in R (I'm fairly new
2005 May 04
1
selecting maximum values
Sorry for disturbing you with another newbie question!
I have a data frame about coastal waters quality
parameters: for some parameters (e.g. NH3) I have only
1 observation for each sampling station and each
sampling date, while in other cases (chlorophyll) I
have 1 obs for each meter-depth for each station and
date. How can I select only the max chlorophyll value
for each station/date?
example
2010 Apr 25
1
categorical variable in scatterplot (car)
Hello R folks,
I am encountering a problem with the following scatterplot function from the
car package:
> scatterplot(y~x|z)
where y and x are continuous (interval) random variables and z is a
categorical variable. When z is a categorical variable coded 1 or 2, I
(appropriately) get a scatterplot of y by x, coded by z. Similarly, when z
is a categorical variable coded 1, 2, or 3, there is
2011 May 16
1
Linear Discriminant Analysis error: "Variables appear constant"
Hi R experts,
I'm attempting to run Linear Discriminant Analysis using the lda function in the MASS package. I've got around 50 predictor variables and one response variable. My response variable has 5 numeric categories that represent different clusters of fish abundance data (clusters were developed using Bray-Curtis and NMDS), and my predictor variables are environmental variables that
2007 Jan 21
1
Scatterplot help
Hi my friends,
I'm trying to make a scatterplot like this.
1) I have a 3-variable dataset. They are ID, x, and y.
2) "x" is for the X-axis, "y" for the Y-axis, and "ID" is used to label all
the cases in the scatterplot.
3) After creating the scatterplot, I need to add both a X-axis reference
line and a Y-axis reference line. The X-axis reference line is a
2008 Feb 11
1
scatterplot in CAR
I am trying to use scatterplot function in CAR like the following:
scatterplot(X~Y)
I want to label X points and Y ponits using the different color.
Any idea for this?
Aimin
2011 Feb 08
1
How to change labels in scatterplot?
Dear all,
I'm trying to use "scatterplot" from package "car" to get a scatterplot with
row-names as labels and I want my data to be divided into two groups defined
by the column "tresh". Leaving away the groups-command gives me the right
labels but they are not distinguished by colors according to "tresh". Does
anybody know why the following example
2012 Oct 23
1
scatterplot with wrong line offset
Hi All,
I'm trying to do a Scatterplot (package: car), and add a line (just for
reference).
There is my code:
#------------------------------------Code---------------------------------------------------
library("car")
library("calibrate")
G_T<-c("car","bike","boat")
ave<-c(80,10,45)
perf<-c(100,80,75)
df2<-data.frame(G_T,ave,perf)
2009 May 01
1
Plotting extra lines on scatterplot
Hello Everyone-
I'm in the process of slowly learning R and am having a little bit of
trouble plotting an extra line onto a scatterplot. I'm sure the answer
is quite simple but I am stumped.
The code I am using is:
headways <- read.table("headways.csv", header=TRUE, sep=",",
na.strings="", dec=".", strip.white=TRUE)
plot.new()
2006 Feb 01
1
Scatterplot color options in CAR package?
Hi All.
I'd like to change the default plotting colors used to construct a
scatterplot with regression line in the CAR package.
So,
scatterplot(y~pred,smooth=FALSE, xlab="X", ylab="Y", lwd=2)
If I change the palette (e.g., palette(ranbow(6)), I can change the color of
the lines and points.
However, the axes and labels remain in black (i.e., the first color in the
2009 Feb 19
1
modifying legend in scatterplot matrix R
Hello R users,
I have some troubles to modify the "per default" legend in the
scatterplot.matrix using the car package. Here is my code:
--------------------------------------------------------------------
scatterplot.matrix(~ a + b + c,
groups=treatment,
by.groups=F,
data=newfile3,
smooth=T,
pch=c(16,4),
cex=1.3,
2011 Nov 07
0
Adding lines to scatterplot odd result when creating multiple plots
Dear R helpers
I'm attempting to create a matrix of scatterplots with X-Y mean lines and
regression lines added to each plot in the matrix. I have managed to create
the first plot I would like using scatterplot but have run into an odd
result when I use par() to set up the page to take multiple plot.
Specifically, the mean and regression lines appear to plot in the second
plot window, not
2010 Nov 16
5
scatterplot with filled circles
for a simple scatterplot:
plot(X ~ Y, type = 'p', col = 'red')
this produces red-edged circles, but I want to fill in the circles.
can this be done? I checked '? plot' already but couldn't find what I was
looking for.
cheers
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2006 Jun 16
2
scatterplot but a little tricky
i have two vectors of numbers x and y and of course i
can do the standard scatterplot plot(x,y)
and it looks fine. But, I was hoping there was a way to
do the scatterplot so that each point plotted is a number
where the number represents the index in the dataset.
so, if it was x[3] and y[3], then the point would be a 3
or if it was x[4] and y[4], then the point would be a 4 etc.
i doubt this is
2011 Jun 04
1
nonparametric logistic regression based on locally weighted scatterplot smoothing (lowess)
Dear UseRs:
Recently, I have read an article regarding the association between age and
lymph node metastases.
http://jco.ascopubs.org/content/27/18/2931.long
In statistical analysis, the authors stated "Because a nonlinear
relationship between age and lymph node involvement was expected based on
existing literature, lymph node involvement was also regressed on age using
nonparametric
2007 Jul 19
2
Trend lines on a scatterplot matrix
I'm using pairs() to generate a scatterplot matrix;
pairs(~ Fuzzy.gray.white.ratio+Fuzzy.gw.t.score+AgeWhenTested+signal_mean.noise,
data=datam,subset=status=="control",main="Controls",
labels=c("G/W","Peak Separation","Age","S/N"))
How can I add regression lines to the plots?
2004 Dec 23
3
combination of scatterplot and image graph
Dear R users,
I'm interested in a combination of a scatterplot and an image graph.
I have two large vectors. Because in the scatterplot some areas are
sparsely and others densely populated, I want to see the points, and
I also want their color to be changed based on their density (similar
to a heat map). Is there a function that can do that?
Thank you,
b.
2008 Oct 21
1
Scatterplot Matrix
Is there any way to make the points on my scatterplot matrix correspond to numbers instead of dots? I know how to do this on a regular 2-variable scatterplot but not on the matrix. Thanks!
-Lydia
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