ipi

Contents: Description, Arguments, Usage, Examples, Related Functions Supported Under Version: > 1.71 Current Davinci Version: 2.27 64-bit Safe: No Description Inverse Parabolic Interpolation. Calculates the coordinates of the minimum or maximum of a parabola given 3 x and y values on the parabola Arguments and Return Values Arguments:Two 3x1x1 FLOAT arrays containg the X and Y values of three points on the parabola Return Value: A float number indicating the x-coordinate at which the extremum is located. Usage Syntax: ipi(coordinates=VAL, values=VAL) 'coordinates' - The x-positions (or any arbitrary axis) of the three selected points 'values' - The value of the function at the specified x-position. Examples dv> coords 3x1x1 array of float, bsq format [12 bytes] -10.0440 -4.10500 5.22300 dv> vals 3x1x1 array of float, bsq format [12 bytes] 81.3300 9.03500 36.9800 dv> b=ipi(coords,vals) -0.948612

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