Question: Plot multiple R empricial distributions with different X axis on the same plot
0
gravatar for maxime.policarpo
11 months ago by
France, Paris
maxime.policarpo90 wrote:

Hi,

I am facing a problem on which i have to plot three empirical distributions in R with the function "ecdf" but one limitation is that those distributions don't have the same X-axis values.

For example I have three vectors :

vector1 <- c(-5,-10,-5,-9,-7,-9,-6,-4,-1,-3,-6,-8,-7,-5,-5,-4,-6,-8,-9)
vector2 <- c(11,12,45,74,12,122,141,52,54,69,87,54,52,48,96)
vector3 <- c(0.2,0.3,0.3,0.3,0.5,0.9,0.5,0.4,0.6,0.8,0.5,0.6)

I would like to plot the empirical distributions of those three vectors in the same graph (The Y-axis will stay the same, between 0 and 1) but with different X-axis (here, axis x1 will be between -10 and -1 while axis x3 will be between 0 and 1). I have found many questions regarding plotting different curves with different y-axis but never found how to do it with distributions and different X.

Would you have any idea ?

plot distribution R • 244 views
ADD COMMENTlink modified 11 months ago by RamRS27k • written 11 months ago by maxime.policarpo90

Please use the formatting bar (especially the code option) to present your post better. You can use backticks for inline code (`text` becomes text), or select a chunk of text and use the highlighted button to format it as a code block. I've done it for you this time.
code_formatting

ADD REPLYlink written 11 months ago by RamRS27k
1
gravatar for Corentin
11 months ago by
Corentin450
Corentin450 wrote:

Hi,

You can use the lines() function, this allows you to add lines to an existing plot.

Do not forget to specify the x limits in your call to "plot()", in your example it would look like this:

plot(ecdf(vector1), xlim = c(-10, 141))
lines(ecdf(vector2), col = "blue")
lines(ecdf(vector3), col = "red")
ADD COMMENTlink written 11 months ago by Corentin450

Hi,

Thanks for your answer, but this will create an unique x-axis for all my vectors. I think I will go this way because creating three different X-axis in the same graph dosn't seem very feasible :/

Have a good day,

Max

ADD REPLYlink written 11 months ago by maxime.policarpo90

Another solution would be to use par(mfrow=c(1,3) to create three subplots in the same figure (see https://www.statmethods.net/advgraphs/layout.html)

If I understood correctly, what you want to achieve is to "cut" your x-axis where you do not have data, I would personally advise against it as it would be misleading.

ADD REPLYlink written 11 months ago by Corentin450
Please log in to add an answer.

Help
Access

Use of this site constitutes acceptance of our User Agreement and Privacy Policy.
Powered by Biostar version 2.3.0
Traffic: 952 users visited in the last hour