Find all max values and thier indices in a 2-D array

[kbaker]

Thanks.  I am trying to find the first highest value that is not directly next to that little white sphere you see in your picture.   I should have described it better.    Thanks again, and I hope this helps. 

[altenbach]

Well, then simply drop the global max and the 8 adjacent elements and find the new max. See attached (LabVIEW 8.0)..

Is that what you want???

Message Edited by altenbach on 01-14-2007 01:00 PM

[kbaker]

The problem is that I don't know ahead of time how big that white circle in that image you had earlier is?  That's why I searched for the max value then checked to see if this value is close to ANY of the previously found max values, not just the first max value.  It looks like I am just stuck with what I have, I was just hoping for something quicker.  Thanks again for all of your suggestions.

Kevin Baker

[Abhari]

thanks for all useful information here!

I am trying to find the all maximums with indices in an XY graph.

the examples here are really helpful, but I also want to find the places where maximums happen,

I am a beginer, please help!

waiting

thanks 

[kbaker]

Have you tried the Peak Detector VI?  It gives the location, peaks or values, amplitude, and 2nd derivative of peaks or valleys in a array data set. 

[Abhari]

thank you for your reply

but sorry

I have XY graph not wave form graph, and the inputs of the peak detector functions do not match with it.

waiting

[altenbach]

SImply split your x/y data into an x-array and y-array and find the peaks in the Y-array as suggested above. Use the found peak indices on the x-array to get the corresponding x positions. All clear? 🙂

[Abhari]

Thank you so much Altenbach!