How to insert a variable and datetime array into a graph title?

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I have a graph that I want to include the date&time it was made and the number of data stacks the plot contains on it. The number of stacks is a variable that changes depending on what I input for it. The title for the plot works when I use:

sgtitle([datestr(startTime)]

but I also want to add "Number of stacks: N" to the title.

I have this so far but it isn't working:

sgtitle('Recorded on: ', [datestr(startTime)],'Number of Stacks: ',N)

I want the title to look like this:

Recorded on: dategoeshere, Number of Stacks: N

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Answer 1

Star Strider 2022-3-2

在 MATLAB Online 中打开

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It would be easier to use datetime than earlier date versions —

N = 4;

for k = 1:N

subplot(2,2,k)

plot((1:5), randn(1,5))

grid

title(sprintf('Subplot #%d',k))

end

sgtitle(sprintf('Recorded on: %s, Number of Stacks: %d', datetime('now'),N))

See the documentation for sprintf for its details.

.

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Steven Lord 2022-3-2

在 MATLAB Online 中打开

Or perhaps simpler than sprintf:

plot(1:10)

n = 5;

T = datetime('today');

title("This plot with n = " + n + ...

" was generated on " + string(T))

Star Strider 2022-3-2

@Steven Lord — I’d not considered string arrays. Thanks!

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