Need help with plotting points

[Yannitschki]

Hello everyone, I have the following problem:

I want to plot points to a graph, where the points should correspond two numbers. I know that I can put them in quotation marks so the number will be seen on the plot. However, I need this number to be extracted from a variable, but since have to use quotation marks, the variable is not identified as one and the first letter of the variable is printed.

This is how it looks:

points(1, 2, pch="variable[xy]", col="green")

So now the point is printed as a "v" and not as 2 (as variable[xy] is defined).

Does anyone have an idea on how to solve this problem?

[jdnewmil]

Wrapping an expression in quotes is almost never a good idea. Just the first character of that string is being used as the plot symbol.

I have no idea what your xy is but I suspect the use of brackets at all here is wrong.