Why is there an error in the MATLAB file help for MAXDRAWDOWN in MATLAB 7.3 (R2006b) while discussing conversion of raw data in return to price series?

When I read the contents of the MAXDRAWDOWN help page obtained by running:

help maxdrawdown

I see that there is a sentence which contradicts the subsequent piece of code in the 'Notes' section:

 If raw data are in return form, convert to a price series in the

 function call with:

 MaxDD = drawdown(tick2ret(Data), Format);

because TICK2RET converts data input argument expressed as price series to return series.

Answer 1

[MathWorks Support Team]

This bug has been fixed in MATLAB 7.5 (R2007b). For previous product releases, read below for any possible workarounds:

There is a bug in the help documentation for Financial Toolbox 3.1 (R2006b) for the MAXDRAWDOWN function.

The help header for MAXDRAWDOWN should contain the following information at line 44:

%MaxDD = maxdrawdown(ret2tick(Data), Format);