I used For Loop to measure wavelength and power. I want to plot a waveform graph, wavelength is X-axis, and power is Y-axis. But I don't know how to plot them.
I don't see your FOR loop but assuming it's there and surrounding the measurements you've shown, you should wire the wavelength and power wires to the border of the FOR loop. The resulting arrays can be wired to a bundle [cluster] function and this can be wire to an XY graph indicator.
