Use a character variable for a title in a plot function
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Hello, I would like to use a pre-defined variable within the title of a plot function. The code that doesn't work is:
Site = char('LabX');
Then within the function itself:
title([Site ', MeanRespValues']);
This returns the error:
Undefined function or variable 'Site'.
Error in plotFunction (line 28)
title([Site ', MeanRespValues']);
Ideally, in the function's prompt it could ask for a site name to be entered, rather than creating a variable.
I'm looking to return a plot with the title "LabX, MeanRespValues".
I appreciate any help you can throw my way.
采纳的回答
Image Analyst
2017-1-16
编辑：Image Analyst
2017-1-16
First, make sure Site is in scope - that is, it's visible in the same function where you're going to call title(). It sounds like it's not. Use inputdlg() if you want to ask the user for it but again, do this in the same function where you call title().
Then, once Site is in scope, use sprintf() to create a character string that you can pass to plot():
caption = sprintf('%s, MeanRespValues', Site);
title(caption, 'FontSize', 25, 'FontWeight', 'bold', 'Color', 'b');
2 个评论
balsip
2017-1-16
Image Analyst
2017-1-16
Yes, it's possible. If Site is defined in some other function, it will be local to that function and not seen by other functions, but there are ways to get it over to the function you need it in. See the FAQ for a variety of different ways. http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.28s.29.3F
更多回答（1 个）
Balsip
assuming LabX is type double, uint, ..
use
Site=num2str(LabX)
no need for '' around the variable LabX
the reason is that the function char() doesn't cast the type you want, it produces the character that according to ASCII table has for numeric value 3.
if you find these lines useful would you please mark my answer as Accepted Answer?
To any other reader, if you find this answer of any help please click on the thumbs-up vote link,
thanks in advance for time and attention
John BG
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