Financial toolbox transprob function

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Hi,

I'm looking at the trasnprob function on this page

http://www.mathworks.com/help/toolbox/finance/transprob.html

I presume you can use it to generate a transition probability matrix for other data other data other than credit rating?

I have speed and acceleration data in an excel file. When I import it to matlab I would like to generate a transition probability matrix. However I get the error below? Could someone explain to what is happening. transMat = transprob(data) ??? Undefined function or method 'transprob' for input arguments of type 'double'.

Thank you