Clear Filters
Clear Filters

GUI help

3 views (last 30 days)
Nasir Qazi
Nasir Qazi on 3 Apr 2012
% In my GUI I am giving value to T e.g 370 as input , but on debug mode when I am trying to check T as input this gives me 1X3 char instead of 1, this causing error in my answer giving three values what can I add to make the input as single char
e.g in my code
T = get(handles.Red_Temp,'string'); where 'Red_Temp' is input string

Accepted Answer

Jan
Jan on 3 Apr 2012
370 cannot be represented as single char.
'Red_Temp' cannot be the input string, because this is a field in a struct. handles.Red_Temp is the handle of an edit uicontrol. T is the string. This string has 3 characters if it is '370'. To convert is to a number use sscanf:
D = sscanf(T, '%g');
  2 Comments
Nasir Qazi
Nasir Qazi on 3 Apr 2012
where do I add 'D' into my code just after 'T = str2double(get(handles.Red_Temp,'string'));'
Jan
Jan on 3 Apr 2012
I do not know your code, therefore I cannot suggest a valid position.
SSCANF is an alternative to STR2DOUBLE, so you do not need both.

Sign in to comment.

More Answers (2)

Matt Kindig
Matt Kindig on 3 Apr 2012
Are you saying that your GUI requires a double input and not a char input? If so, you can just convert the string to a double, like
T = str2double(get(handles.Red_Temp,'string'))
This will be a 1x1 double matrix.

Otis
Otis on 3 Apr 2012
"get(handles.Red_Temp, 'string')" will return a string. If you expect that string to be a number, e.g. '370', then use the function str2double, which will return the actual number that the string represents:
T = str2double(get(handles.Red_Temp,'string'));
Note: If the entered string does not represent an actual number, str2double will return NaN.

Categories

Find more on Data Type Conversion in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!