Adding years to my plot

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Sewwandhi Chandrasekara 2020-9-10

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https://ww2.mathworks.cn/matlabcentral/answers/591490-adding-years-to-my-plot

编辑： Adam Danz 2020-9-14

SC.fig

Hi, I had line plot and I need to add years starting from 1973 to 2019. Instead of years i can only get numbers from 1 to 47 (figure is attached).

How can i get the years representation to X axis.

Thanks in advance

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Sewwandhi Chandrasekara 2020-9-10

I gave the limit as

xlim([1 47]);

Adam Danz 2020-9-10

Then x are indices or some other numeric value you supplied. You'll need to create a datetime vector to use as your x-data. My answer shows how to do that.

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Answer 1

Adam Danz 2020-9-10

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https://ww2.mathworks.cn/matlabcentral/answers/591490-adding-years-to-my-plot#answer_492400

编辑：Adam Danz 2020-9-10

在 MATLAB Online 中打开

This values 0:50 are probably indices (note that the first data point does not start at x=0). They could be durations too, I suppose. They could even be years using the 'yy' datetime format but I doubt it.

My best guess is that they are indices and you created the plot using

plot(y)

or

plot(x,y), where x are values 0:50, for example.

Instead, create a datetime vector of years and use that as your x-data. For example,

dt = datetime(1971,1,1) : calyears(1) : datetime(2019,1,1); 
y = rand(size(dt)); 
plot(dt, y)

Another way of creating the datetime vector,

dt = datetime(1973,1,1) + calyears(0:46);

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Sewwandhi Chandrasekara 2020-9-10

Dear Adam,

I tried this way and then the y values are changed as yours. But i have to keep the limits of y between 0.00215 to 0.00265 with the x limits between 1973 to 2019.

As an example [1973, 0.0024]..............[2019, 0.0025]