zcsr
zcsr (cursorName [, graphNameStr])
The zcsr function returns a Z value when the specified cursor is on a contour, image or waterfall plot. Otherwise, it returns NaN.
Parameters
cursorName identifies the cursor, which can be cursor A or B.
graphNameStr specifies the graph window or subwindow.
When identifying a subwindow with graphNameStr, see Subwindow Syntax for details on forming the window hierarchy.
Examples
Print zcsr(A) // not zcsr("A")
Print zcsr(A,"Graph0") // specifies the graph