How do I create a new array that is a cropped version of another array?

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Aoife Monahan 2016-5-4

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评论： CS Researcher 2016-5-4

I am using a txt file to hold data on an ultrasound signal but I want it so that only a certain section of the data is placed as a different name. I want the user to pick the max and min time axis that holds a peak of interest and do analysis on the cropped signal which would involve moving the data to a different variable name. How do I go about doing this? Example: I have data that goes from to 10 micrometers but I only want the data that is between 4.7 and 5.2 micrometers for peak analysis.

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Answer 1

CS Researcher 2016-5-4

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编辑：CS Researcher 2016-5-4

在 MATLAB Online 中打开

Let us say the vector which contains all the values is t. You can do this:

   startLocation = find(t >= 4.7,1);
   endLocation = find(t >= 5.2,1);
   croppedVector = t(startLocation : endLocation);

This of course assumes that all the values in the vector t are sorted in ascending order. Hope this helps!

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Aoife Monahan 2016-5-4

Thanks for answering. This is giving me the time values from the specified limits but not the corresponding amplitudes associated with the time values.

CS Researcher 2016-5-4