interp2d

Contents: Description, Arguments, Usage, Examples, Related Functions Supported Under Version: >1.69 Current Davinci Version: 2.27 64-bit Safe: No Description Bilinear interpolation algorithm for a standard table with a constant delta x and y Arguments and Return Values Arguments: A table of values, x (XxYx1) and y (XxYx1) data, delta x and y values, and start x and y Return Value: a numeric array the size of XxYx1 Usage Syntax: interp2d(table = VAL [, xdata = VAL] [, ydata = VAL] [, startx = FLOAT] [, deltax = FLOAT] [, starty = FLOAT] [, deltay = FLOAT]) Examples Setting up the initial values for interpolation (Very simplified example) dv> table 2x2x1 array of int, bsq format [16 bytes] 0 1 2 3 dv> xdata 2x1x1 array of float, bsq format [8 bytes] 1.500000000 1.500000000 dv> ydata 2x1x1 array of float, bsq format [8 bytes] 1.500000000 1.750000000 First interpolation with deltax and y equal to 1 to illustrate what the algorithm is doing dv> out = interp2d(table,xdata,ydata,startx=1,deltax=1,starty=1,deltay=1) 2x1x1 array of float, bsq format [8 bytes] 1.500000000 2.000000000 Second interpolation with deltax and y equal to 10 to illustrate how the output changes with changes in deltax and y dv> out = interp2d(table,xdata,ydata,startx=1,deltax=10,starty=1,deltay=10) 2x1x1 array of float, bsq format [8 bytes] 0.1500000060 0.2000000030

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