I want to plot a sine wave from a data array.

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Mehrdad Kazemtabrizi
评论： Mehrdad Kazemtabrizi 2020-2-14
Hi,
I have a mat file which is full of data extracted from a sine wave. Now, I want to plot one based on this data. How can I do it in MATLAB?
  1 个评论
Guillaume
Guillaume 2020-2-13
You're going to have to give a lot more details.
A mat file contains variables, so firstly it's unclear what a mat file full of data extracted from a sine wave actually means.
Then it's unclear what one is in I want to plot one.

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回答（1 个）

Ashitha Mahendra
Ashitha Mahendra 2020-2-14
Hi Mehrdad,
I am assuming that you want to plot a specific variable stored in MAT-file.
My suggestion would be:
1. Since, you cannot plot a mat file directly, you have to load the data to the MATLAB workspace first. For this, you can execute something like the following example:
Data = load('Sine.mat'); % replace 'Sine.mat' with the name of your MAT-file
2. Now you can plot the data, perhaps using the following command:
plot(Data.spec);
where "spec" can be replaced with the variable which you want to plot.
Hope this helps.

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