Allan variance program

[Hussam_KUT]

Hi, i am analyzing mems gyroscope. I need to plot Allan variance. I need a program for Allan variance to plot. 

Thank you

[GerdW]

Hi Hussam,

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I need to plot Allan variance. I need a program for Allan variance to plot. 

What is your problem? Where are you stuck?

After all it's (more or less) basic math…

(When you want someone else to do your job then you should offer a job in the appropriate forum!)

[Hussam_KUT]

Hi, thank you for your reply. I am facing problem in plot the 3 plots in single plot. I mean x-gyro, y-gyro and z-gyro allan deviation to plot in single window. 

I first find out the single axis allan deviation and then simply plotted in x-y plot. 

But now having problem in plot all xyz gyro allan deviation in single plot. The matlab plot picture is attached. Kindly suggest the solution.

Thank you.

[Hussam_KUT]

Hi,

I am plotting the allan variance of Gyroscope.

The problem I am facing is how to plot data of 3 columns which is Y axis in single plot.

I mean y axis contain three different data, (data of  x-gyro, y-gyro and z-gyro). This data need to be plot with respect to time in X-axis.  allan deviation to plot in single window. 

The matlab plot picture is attached. Kindly suggest the solution.

Thank you.

[GerdW]

Hi Hussam,

you can have multiple plots in a XY graph: the context help shows you how... (You need an array of plots.)

[altenbach]

This is a very basic question and of course depends a little bit on the data. How is the data currently represented? (2D array with four columns? 2D complex array with three rows? arrays of points (cluster of xy data)?, etc etc.)?

Are the points spaced equally in X? Do all plots share the same x-values?

I am sure that if you would attach a small simplified VI containing your data in its native form, we could give a precise answer within minutes. If we have to guess, it is much more difficult t give the appropriate answer.

Most likely you want an xy graph with both axes in logarithmic mapping. It accepts a huge selection of different datatypes so we really need more information to decide what's best.

Note that it is better to embed your picture in the post:

[altenbach]

Once you tell us about your data format, things are trivial. Here's one example create in about a minute from scratch.

[Hussam_KUT]

Hi altenbach

Thank you for your response. I have attached the vi and also the sample text file. Infact i am reading text file which has 3 columns data. And generating the time from the function of Allan variance. I have used your plotting method you have mentioned before. https://forums.ni.com/t5/LabVIEW-Idea-Exchange/Even-Simpler-Multiplot-XY-graphs/idi-p/1393286

But this method works only for two columns in y axis. 

[altenbach]

We are missing the subVI. What does it do?

Whatever you are doing has absolutely nothing to do with my idea you quoted. An array of clusters where each cluster contains a DBL and three complex values makes absolutely no sense for a xy graph. You also don't need any matrix operations, plain 2D arrays are sufficient.

Why is the output of your subVI a 2D complex array. What do the rows/columns/IM/RE parts represent?

[Hussam_KUT]

1. Sub vi is basically mathscript node of allan variance function.

2. From last idea i just followed for plotting.

3. Ok i will remove matrix operations.

4. I am not clear on this that why the sub vi output is 2D complex, but maybe due to the Allan variance function which is in the math script node.

Following is the subvi