How to draw a linear regression plot?

Hi everyone.

I trained LSTM network for forecasting price.I want to draw a plot like the one below for the actual and predicted values and get R-Squared value. Which command can I use to do this?Please help me.Thanks

Answer 1

[Kevin Holly]

You can use fitlm.

[Nazila Pourhajy]

But when I use this command to plot;I get this result as below:

Do you know,why?