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plotting x and y differential

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Gavin Seddon
Gavin Seddon on 11 Mar 2020
Closed: MATLAB Answer Bot on 20 Aug 2021
hello
I have plotted x and y data and seen evidence of a bifurcation. I want to plot x vs diff y.
this is what i did :
plot(nslogistic.x,diff(y))
this is what i got:
Error using plot
Data must be numeric, datetime, duration or an array convertible to double.
is it possible to plot x data and y differential?
gs
  5 Comments
Turlough Hughes
Turlough Hughes on 12 Mar 2020
Please upload the .mat file containing the variables nslogistic and y.

Answers (1)

Raynier Suresh
Raynier Suresh on 18 Mar 2020
diff(Y) function calculates the difference between adjacent elements of Y along the first array dimension whose size is not equal 1. But to find the derivative of Y with respect to X you can use diff(Y)/h where h is the step size in X, if X doesn’t have equal step size then you can use diff(Y)./diff(X).
While using plot function make sure that the data type of the input arguments must be one of these type single, double, int8, int16, int32, int64, uint8, uint16, uint32, uint64, categorical, datetime, duration
Referring to the following links might be helpful:

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