resizing an array in MATLAB

I have an array that is declared global and after first definig it and using it with size [1,3] - for example - I want to resize it to be [1,2] for the next step.

Code:

> global sin

> sin= [1 2 3]

> resize sin to only have 2 columns.

Thanks for your help.

[Alex Mcaulley]

This is very basic. I recommend you to do the Matlab tutorial

[the cyclist]

I second the general recommendation to go through a basic tutorial.

But, also, I have some suggestions/questions:

• You should not define a variable called sin. That is a MATLAB keyword for the sine function. It is poor programming practice to name variables with keywords.
• Why are you defining the variable to be global? That is almost never necessary, especially in the sorts of programs a beginner will be using.
• Your variable has 3 values. How can you make it into a size [1,2] array? Do you want to discard a value?

Answer 1

[Athul Prakash]

I think what you're looking for is a way to index. I'm sure you'll find the answer here:

https://in.mathworks.com/help/matlab/learn_matlab/array-indexing.html

If you want a solid grip on MATLAB basics, have a look at the MATLAB Onramp:

https://in.mathworks.com/learn/tutorials/matlab-onramp.html

Hope it Helps!