ConvertBot: Evaluates a polynomial on a range of integers.

2020-04-27T22:04:29Z

Evaluates a polynomial on a range of integers.

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Evaluates a polynomial on a range of integers.
<pre>
<OUT> - Name of output file to write results to.
<COEF> - Name of Data object in results table to read coefficients.
<NDATA> - Number of points to evaluate at.
<FORMAT> - Format of the output file.
<START> - Sets abscissa start of the output file.
<DELTA> - Sets abscissa delta of the output file.
<UNITS> - Sets abscissa units of the output file.

Evaluates a polynomial at integers between 0 and <NDATA> and outputs the
results to <OUT>.

The polynomial is gathered from a Data object in the results table having the
same name as <COEF>. The object is assumed to be a double array containing
the coefficients for the polynomial in increasing degree (1, x, x^2, etc.).

FORMAT, START, DELTA, and UNITS are optional parameters.

Examples:
1. The following will create a 4k element file, create a polynomial to fit
the data, then evaluate the polynomial. fit_copy should be identical to fit.
nM> wave in elem=4k form=SD
nM> polyfit in 20 coef poly fit err
nM> polyeval fit_copy coef 4k

See Also: POLYFIT
</pre>

[[Category:NXM_Explain]]

POLYEVAL - Revision history

ConvertBot: Evaluates a polynomial on a range of integers.