MATLAB: I would like to understand this statement in matlab: x=y(z) where y and z are both vectors

i would like to understand this statement in matlab: x=y(z) where y and z are both vectors

I would like to understand this statement in matlab: x=y(z) where y and z are both vectors

Best Answer

Hi,

x gets the value of y which is found at index z in y.

y=5:9
z=3
x=y(z)

results in x = 7, since 7 is found at index number 3 in y.

See the documentation for further information.

Best regards

Stephan

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MATLAB: Plot with a lag, Part 2

Note that the length of vectors should be the same in order to apply the function 'plot'. So as you require to plot a delayed version of 'z' with 'x', the lengths should still match. Here is a sample code to help you:

x=[0 1 2 3 4 5 10 15 20];
y=[0 -1 -2 -3 -4 -5 0 5 0];
z=[0 2 3 1 4 5 6 7 5 6];
plot(x,y);
hold on;
plot(x,z(2:end));

You can populate the values 'x','y' and 'z' from the relevant table in your case, but make sure that the length of 'z' should be one more than that of 'x' or 'y'.

Hope this helps

Prajit

MATLAB: Exercise: Add 3 to just the odd elements of x=[2 5 1 6]

Create z = x and then modify the elements of z directly using the indexes contained in y. E.g.,

z = x;
z(y) = z(y) + 3;

Best Answer

Related Solutions

MATLAB: Plot with a lag, Part 2

MATLAB: Exercise: Add 3 to just the odd elements of x=[2 5 1 6]

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