How to manually set the point to xy graph

[Marumaxxxxx]

Hi,

I have some problem with how can i manually set the point into XY graph. The point is definition by myself, actually i´m doing an experiment that i use function generator to set with different frequency, like(100, 300, 800, 1400...Hz), and at the same time i still need collect the voltage signal from lock in ampliefier. At last i get a XY graph, X for frequency and Y for voltage. Voltage signal as mesurement signal is not stable. I just want to collect the signal under the best situation, then put it to XY graph.

[altenbach]

It is not clear at all what you want to do and what you mean by "manually".

• You could convert the mouse down coordinates to plot coordinates and define a point
• You could use a cursor to define a certain frequency
• etc.