IRID-119 Polynomial Extrapolation in positive direction throws IndexOutOfRangeException

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IRID-119 - Polynomial Extrapolation in positive direction throws IndexOutOfRangeException

Created: 02/04/2008 19:57:16

Revised: 02/04/2008 20:02:40

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Reported by philipp in the forum. Thanks!

Repro Steps:

double[] x = new double[] { -6.060771484, -5.855378418, -1.794238281, -1.229428711, 0.89935791, 2.912121582, 4.699230957, 4.788347168, 7.728830566, 11.70989502 };

double[] y = new double[] { 0.959422052, 0.959447861, 0.959958017, 0.960028946, 0.960323274, 0.960636258, 0.960914195, 0.960928023, 0.96138531, 0.962004483 };

PolynomialInterpolationAlgorithm pia = new PolynomialInterpolationAlgorithm(10);
SampleList sl = new SampleList(10);

for(int i=0;i<10;i++)
{
sl.Add(x[i],y[i]);
}

pia.Prepare(sl);

Console.WriteLine(pia.Extrapolate(12).ToString());
Console.ReadLine();

it works for pia.Extrapolate(-10); (negativ direction)

Comments (2)	Attachments (0)	Issue Links (0)	History

Christoph Rüegg

02/04/2008 20:02:40 * CLOSING COMMENT *

Fixed in revision 409.
Regression unit test submitted.

Christoph Rüegg

02/04/2008 19:58:16

Repro confirmed by cdr, created bug regression unit tests.

Issue ID

IRID-119

Type

Bug

Priority

High

Severity

Major

Visibility

Everyone

Assigned To

Christoph Rüegg

Reported By

Christoph Rüegg

Component

Interpolation

Fixed For Version

[2008.4.14.425] 2008 April (2008.4.14.425)

Affected Versions

Risk Level

No Risk

Status

Closed

Resolution

Complete

Start Date

Due Date

Votes

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Christoph Rüegg

Christoph Rüegg