@Carl Love Thanks again Carl. Very useful suggestions. In general, I think that Maple Flow has some bugs to work out. Not as easy to use for everyday work as intended.

@Samir Khan 

Note that Carl had a colon after the first line of code, and a semi-colon after the 2nd and third. If I insert these, it blows up. 

@Samir Khan Thanks Samir. I tried your code and it worked. I don't know what the problem was before.  I'll try it with some other data, entered in the same form, that is, as a matrix rather than as two separate vectors.

Applications: as a social scientist/demographer, I would be inclined to skip one in thermal engineering or adiabatic mixing -- over my head. Not a good idea.

And thanks again to Carl. 

@Carl Love 

Thanks Carl, but this doesn't seem to work. When I use your code to create a random matrix, I get an error message: 'internal error: unhandled case STATSEQ in subindets.' When I use your second line of code with other data entered as vectors, I get the same message. It looks like a message for a programmer, not the user.

Apparently some Maple code works in Flow, but not all -- and vice-versa. It's clear from their posts on Maple Primes that Flow is still undergoing many revisions and additions. 

Also, I can find nothing in either Maple or Maple Flow help utilities that illustrates a plot of both data and a fitted function. 

I can plot data and fitted functions easily using Mathcad. Maple Flow has a way to got to catch up. 

Thanks again,

Tom Burch