Error using sgtitle?

I have a subplot with four graphs I'm trying to put my figures title over..

sgtitle('Mean Times per Group',['Over 37.5 = ' num2str(meanover) 'Under 37.5 = ' num2str(meanunder)]);

It accepts the "Mean Times per Group" part but gives me the error below.

Error using matlab.graphics.illustration.subplot.Text/set

Unrecognized property Over 37.5 = 0.97049Under 37.5 = 0.99391 for class Text.

Error in sgtitle (line 98)

set(h, pvpairs{:});

Any ideas why?

Answer 1

[Walter Roberson]

https://www.mathworks.com/help/matlab/ref/sgtitle.html

sgtitle(txt)

sgtitle(target,txt)

sgtitle(___,Name,Value)

sgt = sgtitle(___)

So if you have exactly two arguments like you do, the first one would have to be target . But 'Mean Times per Group' is not a target. So sgtitle() keeps parsing to figure out what the parameters are.

The next possibility is that the second parameter is one of the permitted Name options. But it is not -- there is no parameter named 'Over 37.5 = 0.97049Under 37.5 = 0.99391' .

What you probably want is

sgtitle({'Mean Times per Group',['Over 37.5 = ' num2str(meanover) 'Under 37.5 = ' num2str(meanunder)]});

Reminder though that you can code that more clealy as

sgtitle({'Mean Times per Group', "Over 37.5 = " + meanover + "Under 37.5 = " + meanunder});

Answer 2

[Voss]

sgtitle is interpreting the second argument you give it (i.e., ['Over 37.5 = ' num2str(meanover) 'Under 37.5 = ' num2str(meanunder)]) as a property name. That is, it expects property-value pairs after the first argument, in this case.

I don't have access to sgtitle, so I can't say for sure what the solution is, but you can try sending a cell array of character arrays as the first argument, if this is meant to be a two-line title. Like this:

sgtitle({'Mean Times per Group',['Over 37.5 = ' num2str(meanover) 'Under 37.5 = ' num2str(meanunder)]});

Or if that doesn't work, you can send a character array with a newline in it, like this:

sgtitle(sprintf('Mean Times per Group\n%s',['Over 37.5 = ' num2str(meanover) 'Under 37.5 = ' num2str(meanunder)]));