Building a logistic trend surface in R

Question

I would like to build a very simple rectangular surface in R that would have a logistic trend. The values at the top would have the highest values (1) and at the bottom the lowest (0). I have drafted an image that shows example of the surface that I have in mind, with help of not the prettiest trend lines so you have an idea what is needed. I do not have any data, it is supposed to be a theoretical surface with logistic trend, that I am later going to modify. Any help with how to start/approach it, or helpful packages in R would be highly appreciated!

Answer 1

Consider this as a hint.

library("graphics")

plot(0:1, type = "n",xaxt="n", ann=FALSE)
abline(h = c(seq(0,1,.1))

or

abline(h = c(0,.1,.2,.3,.6,.7,.8,.9))
abline(h = c(0.4,.5), col="red")

The only thing you have to do is place the variable, as you call it, with the “logistic trend,” in place of ‘0:1’

A second hint

df = as.matrix(c(0.131313131,0.111111111,0.090909091,
                 0.080808081,0.060606061,0.050505051,
                 0.060606061,0.080808081,0.090909091,
                 0.111111111,0.131313131))

barplot(prop.table(df, 2) )

this results in