How to use message box?
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I have some code that works out the y value of the first point on my graph where x>6. This is the 'failure' point.
figure
plot(x,y), hold all
failure=find(x>6,1);
I want to the display whatever this y_value is in a message box on the figure. Any ideas?
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Answers (2)
Adam
on 6 Mar 2015
doc msgbox
has numerous examples. It is very simple to use, but if you have any questions after looking at that page then feel free to ask those.
2 Comments
Adam
on 6 Mar 2015
failNumber = find(x>6,1);
msg = ['failure: ' num2str( failNumber )];
msgbox( msg );
Or however you want to format your message.
Image Analyst
on 6 Mar 2015
Try this
% Find first element where x exceeds 6
index = find(x>6, 1, 'first');
% Get the x and y values for that index
x6 = x(index);
y6 = y(index);
% Make up a message to put on the plot:
message = sprintf('Failed at (x,y) = (%f, %f)', x6, y6);
% Place the message in a text box near the x,y point:
text(x6, y6, message, 'FontSize', 14);
1 Comment
Image Analyst
on 6 Mar 2015
If you want a popup message box instead of a text label sitting on your plot axes, use
uiwait(helpdlg(message));
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