CPlot:FindNearestX

The FindNearestX method returns the index in a plot series of the point with x value nearest a target value.

nIndex, x = CPlot:FindNearestX()

nIndex is the index of the plot series, from 1 to CPlot:Count.

x is the x value of the point.

On failure, 0,0 is returned.

The following script finds the index of the point with x value nearest 4.2 in series 1 of a CPlotView on the Mira desktop:

V = attachlist_plotview()	-- select the target plot window
if V == nil then Exit() end	-- if not successful, exit the script
P = V:GetPlot(1)	-- get a CPlot object for series 1
if P == nil then Exit("Bad series") end
nTargX = 4.2	-- find the point nearest x=4.2
n, x = P:FindNearestX( nTargX )	-- get index n and value x
Printf("Near x=%lg: x[%d]=%lg\n", nTargX, n, x)	-- print the results