"Getting started" example run on MATLAB R2014b

Hytool_example

Warning: Function cummax has the same name as a MATLAB builtin. We suggest you rename the function to avoid a potential name conflict.
>> edit ths_ds1.dat
>> [t,s]=ldf('ths_ds1.dat');
clf
plot(t,s,'o')
xlabel('Time in seconds')
ylabel('Drawdown in meters')
title('The Fetter data set')
>> diagnostic(t,s)
Attempted to access Dk(:,2); index out of bounds because
size(Dk)=[21,1].

Error in spline (line 62)
  Dk = knots(2:nk,:) - knots(1:nk-1,:); D = Dk(:,2) ./
  Dk(:,1);

Error in ldiffs (line 23)
yi=spline(x,y,xi);

Error in diagnostic (line 50)