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

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

Answer 1

[Star Strider]

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.

.

[Steven Lord]

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]

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