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? -- View this message in context: http://r.789695.n4.nabble.com/plot-probability-density-function-pdf-tp3897055p3897055.html Sent from the R help mailing list archive at Nabble.com.
plot probability density function (pdf)
9 messages · jdospina, pigpigmeow, R. Michael Weylandt +1 more
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. -- View this message in context: http://r.789695.n4.nabble.com/plot-probability-density-function-pdf-tp3897055p3897747.html Sent from the R help mailing list archive at 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 graph, b and e in another graph? -- View this message in context: http://r.789695.n4.nabble.com/plot-probability-density-function-pdf-tp3897055p3898183.html Sent from the R help mailing list archive at Nabble.com.
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x11() what does it mean? if my data has missing value, can I plot the graph? -- View this message in context: http://r.789695.n4.nabble.com/plot-probability-density-function-pdf-tp3897055p3898362.html Sent from the R help mailing list archive at Nabble.com.
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? -- View this message in context: http://r.789695.n4.nabble.com/plot-probability-density-function-pdf-tp3897055p3898605.html Sent from the R help mailing list archive at Nabble.com.
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() Michael
On Wed, Oct 12, 2011 at 10:31 AM, pigpigmeow <glorykwok at hotmail.com> wrote:
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? -- View this message in context: http://r.789695.n4.nabble.com/plot-probability-density-function-pdf-tp3897055p3898183.html Sent from the R help mailing list archive at Nabble.com.
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thank you all of u -- View this message in context: http://r.789695.n4.nabble.com/plot-probability-density-function-pdf-tp3897055p3900396.html Sent from the R help mailing list archive at Nabble.com.