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Hello, i have a question calculating the shaped area between the two curves (see image). http://r.789695.n4.nabble.com/file/n4597813/test.png I try to use a Simpson-Integral but it doesn't work. "R" doesn't know the command! It is possible, that i need a library? Curve 1: y Curve 2: z q<-abs(y-z); est<-sintegral(x,z) Greetings -- View this message in context:

Dear Community, i have read in a table with two column from a *txt-File. What i get is a data-frame wit two column. After that i allocate this 2 column to x and y. Plotting this, i obtain a picture that looks like a bar plot (something like a grid). Is that because x and y is in factor-formatted? A conversion with "asnumeric" doesnt work. I get a vector with "NA". Here is my

Hello, does anybody know, how to reverse the elements of the x-axis. At now my x-axis for example goes from 0, 0.5, 1, 1.5, ... to 99.5, 100.0 Is there a way to change the x-axis, like this: 100.0, 99.5, 99.0, ..., 0.5, 0. The 100.0 should start at left x-axis and the 0 shold be on the right. Greeting -- View this message in context: