Displaying 20 results from an estimated 10000 matches similar to: "Drawing a histogram from a massive dataset"
2010 May 13
1
Comparing histograms?
Rhelpers:
I'm curious what the appropriate analysis to use for testing the
hypothesis that two histograms are statistically different from one
another? Thanks!
--j
2009 Nov 23
3
Trellis Plot
anyone know how to add text in the Trellis plot panel ?? i want to add things
eg: dot dot dot. in the headrer of the panel.
eg: http://old.nabble.com/file/p26486579/hist1.png hist1.png
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2006 Aug 03
3
Looking for transformation to overcome heterogeneity of variances
Dear All
My data consists in 96 groups, each one with 10 observations. Levene's
test suggests that the variances are not equal, and therefore I have
tried to apply the classical transformations to have homocedasticity
in order to be able to use ANOVA. Unfortunately, no transformation
that I have used transforms my data into data with homocedasticity.
The histogram of variances is at
2009 Sep 13
2
(no subject)
How would I make a histogram using R from a table in excel that has 4
variables, but I only want to use 2 of the columns to make the histogram?
[[alternative HTML version deleted]]
2005 Nov 08
3
how to draw cumulative histogram
Hello there,
I am using R to plot some cumulative histogram for my data. Please help
in this case.
Thank you
Lisa Wang
Princess Margaret Hospital
Toronto
phone 416 946 4501 ext.4883
2008 Jun 19
2
Draw curve for histogram
Hi all,
What parameter should I feed to the hist function to draw a line, not bar
graph for a histogram? Smoothed line would be great too.
I've looked at curve() for normal distribution but it's not what I need. I
need some curve on top of the histogram (fit to the actual data). Just as a
way to illustrate, rather than bargraph.
Thanks
--
Regards,
Anh Tran
UCLA NeuroOncology Lab
2005 Apr 27
4
Density curve over a histogram
Dear All
I would like to draw a picture with the density curve of a normal
distribution over a histogram of a set of random numbers extracted
from the same normal distribution. Is that possible?
Thanks in advance,
Paul
2008 Apr 02
1
Two datasets on one histogram
I have two .txt files with lists of generated data I want to plot them on the same histogram. I'm aware of the histbackback function, but that is not really what I am looking for, I just want them on the same histogram but so they are still grouped separately (different colours, different norm curves etc). Does anyone know how to do this? Thank you.
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2009 Aug 10
4
Saving plots to file
Appologies if this has been addressed before, but I can't seem to find it in
the help archives.
I'm looking to do something like the following but it looks like save.plot
is deprecated.
save.plot(plot(glm1$residuals,gain,main = "Hist of residuals and
gain"),file="Desktop/hist1.png")
Thanks in advance,
Sean
Session Info:
R version 2.9.1 (2009-06-26)
2007 Sep 17
3
Histogram with colors
Is there a simple way to plot a histogram with colors?
For example, suppose I generate random points in the
N(2,1) distribution:
x <- rnorm(100000, mean = 2, sd = 1)
Now I would like to plot the histogram:
hist(x)
but I would like to show the bars with x < 0 in red, and the
bars with x >= 0 in lightgreen. Is there any simple way to
do it?
I think I can do it in two steps:
2008 Jul 17
3
Histogram with two colors depending on condition
Dear List,
Say, we generate data like this-
dat<-rnorm(1000,1,2)
hist(dat)
How do i make the histogram, say, red (col = 2) before X = dat = 0, and rest say, green (col = 3) beyond X = dat = 0 in R?
The resulting histogram could be like this http://ehsan.karim.googlepages.com/histogram.JPG (edited)
Thanks in advance.
Ehsan
http://ehsan.karim.googlepages.com/diaryofastatistician
2004 Aug 19
3
probability histogram question
Hello, all;
I get an unexpected result when trying to plot a probability histogram
with R1.9.1 on windows xp:
#with the following code:
> x <- runif(100,0,1)
> hist(x)
> hist(x, freq=F)
> h <- hist(x, freq=F)
> summary(h)
# Length Class Mode
#breaks 11 -none- numeric
#counts 10 -none- numeric
#intensities 10 -none- numeric
#density 10
2004 Feb 04
5
Newbie question: histogram
Hello,
how do you create a histogram with a data frame?
year snow.cover
1970 6.5
1971 12.0
1972 14.9
1973 10.0
1974 10.7
1975 7.9
...
mydata=data.frame(year=c(1970,...),snow.cover=c(6.5,...))
hist(mydata) does not work.
Many thanks.
PR
2011 Jun 09
1
histogram - density on y axis and restriction to interval [0, 1]
Hello,
To indicate probability densities instead of counts on a histogram, I
specify freq = FALSE.
However, I expect that summing all top y coordinates over all the
intervals of the histogram will provide 1.
1)
v <- c(0.2885, 0.2988, 0.3139, 0.2615, 0.3179, 0.3163, 0.2583, 0.3052,
0.2527, 0.3147, 0.3235, 0.2408, 0.2480, 0.3108, 0.3577, 0.2829, 0.2694,
0.3275, 0.3314, 0.2639, 0.3076,
2005 Apr 20
6
Histogram
Dear everybody!
I am analysing data from an enquette. The answers are either A or B. How can I
draw a histogram without transforming the data from characters to numbers? If
the data are saved in a list M, hist(M[,1]) returns:
Error in hist.default(M[, 1]) : `x' must be numeric
Execution halted
Thank you in advance!
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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2010 Nov 11
3
overlap histogram and density
Hi,
Does anybody encounter the same problem when we overlap histogram and density
that the density line seem to shift to the right a little bit?
If you do have the same problem, what should we do to correct that?
Thank you.
par(mar=c(4,4,2,1.2),oma=c(0,0,0,0))
hist(datobs,prob=TRUE, main ="Volume of a catchment from four
2005 Jun 13
3
Lattice: Combining xyplot and histogram
Dear all,
I am trying to create a lattice plot which consists of 1 xyplot and 2
histograms (each for x and y).
My first try was like this:
x<-rnorm(1000)
y<-rnorm(1000)
xy <- xyplot(y~x)
hist.x <- histogram(x)
hist.y <- histogram(y)
print(xy, position=c(0, 0.2, 1, 1), more=TRUE)
print(hist.x, position=c(0, 0, 1, 0.33),more=T)
print(hist.y, position=c(0.8, 0, 1, 1))
Ok, this is
2003 Oct 02
3
Query: weighting cells in histogram
I have the 'breaks' for the histogram ('hist') but I want weight the cells instead of using actual observations. I thought that using freq=FALSE implied that the numbers in 'x' were weights but this turned out to be wrong.
Any help and/or comment is very much appreciated.
Regards,
M?rten
M?rten Bjellerup
Doctoral Student in Economics
School of Management and Economics
2008 May 15
1
lattice histogram problem with integers values and nint
been puzzling over this for a day.
Summary
integer variable to use with histogram, 170,000 rows. Value is day of
year. Hist works, lattice histogram with nint does not work (spurious
spikes in display), lattice histogram using breaks=c(0:365) works
fine. Spike values appear to be sum of two adjacent bins. Want to
know if this is a familiar problem, and what the recommended
work-around is.