I have 2 series of variables, I want to plot the probability density function
of these 2 variabels (i.e. two curves in one graph), I just want to compare
these two variable distribution.
what should I do?
can I use ggplot2 package?
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x=rnorm(100,1,0.8) # A series.
y=rnorm(100,0,0.5) # Another series with different mean and variance.
plot(density(x),ylim=c(0,1))
lines(density(y),col=red)
Remember that density() is a nonparametric estimator. You should properly
choose the bandwith.
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however, if i have an excel file, but there have 6 variables, a,b,c,d,e,f.
how to plot the probability density function of a and d in one graph, b and
e in another graph?
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i want to plot probability density function,predictvalue has missing value
and observevalue has not missing value, I tried ..
attach(test) #test is the name of the data file
names(test)
plot(density(predictvalue,na.rm=TRUE))
lines(density(observevalue))
is it correct?
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Assuming you mean you want them on the same device:
layout(1:2)
plot(density(a))
lines(density(d),col=2)
plot(density(b))
lines(density(e),col=2)
Getting your data into R is more of a challenge, but if you want my
unsolicited advice, you can do far worse than saving as CSV and using
read.csv()
x11()
plot(density(a))
lines(density(d))
x11()
plot(density(b))
lines(density(e))
2011/10/12 pigpigmeow [via R] ml-node+s789695n3898183...@n4.nabble.com:
however, if i have an excel file, but there have 6 variables, a,b,c,d,e,f.
how to plot the probability density function of a and d in one
x11()
what does it mean?
if my data has missing value, can I plot the graph?
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Please -- this is not your personal help advisor. Use R's Help facilities
before posting.
-- Bert
On Wed, Oct 12, 2011 at 8:20 AM, pigpigmeow gloryk...@hotmail.com wrote:
x11()
what does it mean?
?x11
if my data has missing value, can I plot the graph?
Try it and see.
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thank you all of u
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