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From: rouben@math13.math.umbc.edu
Newsgroups: comp.sys.handhelds
Subject: Plotting data point on HP48
Message-ID: <4941@umbc3.UMBC.EDU>
Date: 2 Feb 91 03:44:13 GMT
Sender: newspost@umbc3.UMBC.EDU
Reply-To: rouben@math13.math.umbc.edu ()
Organization: Mathematics Department University of Maryland, Baltimore County
Lines: 23

How does one plot the graph of a function given in a tabular form?

Specifically, I have a program that generates a sequence of (x,y)
pairs and stores them in the stack.  The pairs represent points
on the graph of the solution of a differential equation.
Does anyone have a utility program for plotting a graph passing
through these points?  A simple linear interpolation between the points
will suffice.

The closest thing I could find in HP48's built-ins was the scatter-plot
function of the STAT utility in which a set of data points can be 
fitted with a linear, power, logarithmic or exponetial functions.  
Their applicability to my purposes is limited since these curve-fitting
routines approxiamte the entire data set by one single equation, rather
than with different equations in piecewise fashion.

Any suggestions?

--
Rouben Rostamian                          Telephone: (301) 455-2458
Department of Mathematics and Statistics  e-mail:
University of Maryland Baltimore County   bitnet: rostamian@umbc.bitnet
Baltimore, MD 21228,  U.S.A.              internet: rouben@math9.math.umbc.edu