Undefined function "......" for input arguments of type 'double'

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Please help me, when I run a code it gives
"Undefined function '.....' for input arguments of type 'double'"
Let me know what to do now ?
  2 Comments
Zahid Iqbal Rana
Zahid Iqbal Rana on 23 Feb 2015
lb = [-1 0 2 3 -2];
ub = [5 5 3 3 7];
n = 1e7;
X = randFixedLinearCombination(n,12.5,[1 1 1 1 1],lb,ub);

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Accepted Answer

per isakson
per isakson on 22 Feb 2015
Edited: per isakson on 24 Oct 2017
The cause to this error message may be one of
  • typo, you have misspelled the name of the function
  • the function cannot be reached because it is not on the search path
  • a function with that name exists on the search path, but it is not defined for the actual type of input. E.g.
>> max(cell(1,9))
Undefined function 'max' for input arguments of type 'cell'.
  • the function does not exist on your system
Measures
  • check spelling
  • run the command which function_name -all. If which finds it run help function_name and read carefully
  • if you think it is a function, which comes with Matlab, search for the function in the Matlab documentation
  • search the file function_name.m with Windows Explorer or similar

More Answers (1)

jayamala pakhare
jayamala pakhare on 28 Apr 2018
Undefined function 'rescale' for input arguments of type 'double'.
  3 Comments
Camille Dingam
Camille Dingam on 24 Aug 2020
Hello, please help me with the similar error as below:
Undefined function 'mfcc' for input arguments of type 'double'.
Steven Lord
Steven Lord on 24 Aug 2020
The mfcc function was introduced in Audio Toolbox in release R2018a. Do you have this toolbox installed (check the output of the ver function if you're not sure) and are you using release R2018a or later?

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