Some Questions

[MrLearners]

Hi Gerdw,

This is some graph I get from the intensity graph. 

[GerdW]

Hi Learner,

"compare the graph"

Compare to what? Which kind of results do you want?

"phase shift"

This is the first time you talk about "phase shift". You should know the relation between your pictures (intensity graphs) and any kind of "phase shift"...

General hints:

- You can apply some filtering to those lines. They show some noise, which can be reduces by low pass filtering...

- You can get the peak values (amplitude, x-position) and compare those with peak values from other "images" or other lines of the same image...

[MrLearners]

Hi Gerdw,

You see I got 2 graph in previous image, I want to compare the X axis shift. Is it possible to apply low pass filter to this graph because it is all 1D array data?

[MrLearners]

Hi Gerdw,

I need your advice. How can I compare graph with changing peak value?

[GerdW]

Hi Learner,

you don't want to compare graphs. You need to compare signals...

- Apply filtering to reduce noise (maybe already in hardware before DAQ?)

- Define your parameters to compare: When you need to compare peaks you need to get those peaks (x and y value) from your signal. There are functions in the signal palette to find peaks...

[MrLearners]

Hi Gerdw,

I have filter the noise.

I need to compare the time, however the signal have different peak value and some signal is distorted.

[GerdW]

Hi Learner,

ever tried to find those peaks? This function also gives you the x locations!