MATLAB: Radio button option group adding space to end of string property

guideMATLABoption groupstring property

When I use findobj to search for a radio button in an option group based on each button's String property, I keep getting empty sets.

h = findobj(handle.optionGroup, 'String', strVariable);

I have discovered that a space character is being added to the end of the String of the buttons, so findobj never can match it to my variable. I have manuallly checked the property window multiple times for each button, and there are no extra spaces at the end of their strings.

Why does this happen?

Best Answer

Thank you for the quick reply, Walter. I will consider your cell-array tip in the future for a more robust GUI.

Just before your email arrived, I solved it. I went to the zoom box for the String property of each radio button, highlighted from the "bottom" to the last 2 characters of the entered string, hit delete, then retyped the last 2 characters. I guess some kind of hidden character (line feed?) was added to the end of the strings, so my odd method removed it.

Thanks again for your time.

Related Solutions

MATLAB: How to remove leading and trailing spaces from a string

To remove leading and trailing spaces from the string, you can use the DEBLANK function:

str = '   Hello, World!   '
str = deblank(str)  %remove trailing spaces
str_flipped = str(end:-1:1)  %flip the string
str_flipped = deblank(str_flipped)  %remove trailing spaces of the flipped string
str = str_flipped(end:-1:1)  %flip the string back

The resulting string does not contain any leading or trailing spaces:

str
 str = 'Hello, World!'

To remove leading spaces from the string, you can also use the STRTOK function, which finds the first token in the string. (A token is the first set of characters that is encountered before a delimiter. In the following example, it is white space.) Leading delimiters are ignored. For example:

str = '   Hello   '
str_new = strtok(str)

The first token of the string 'str' without any leading spaces is found:

str_new
 str_new = 'Hello'

If you have a string containing more than one token and want to remove leading spaces from the string, you can use STRTOK in the following format:

 [token,rem] = strtok(str)

where 'str' is the input string, 'token' is the first token, and 'rem' is the remainder. Then combine the outputs 'token' and 'rem'.

For example:

str = '   Hello, World!'
[t,r] = strtok(str)
str_new = [t r]

Here is the output:

 t = 'Hello,'
 r = ' World!'
 str_new = 'Hello, World!'

For more information on these functions, type 'help function_name' at the MATLAB command prompt. If you have installed the documentation, type 'doc function_name' to see the documentation for these functions. If you do not have the documentation installed, you can find it here:

http://www.mathworks.com/access/helpdesk/help/techdoc/matlab.shtml

Simply type the function name in the search box.

MATLAB: Help me the radio button in Matlab

You can do that with a uibuttongroup()

Best Answer

Related Solutions

MATLAB: How to remove leading and trailing spaces from a string

MATLAB: Help me the radio button in Matlab

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