Fast 2-dimensional interpolation

version (2.19 KB) by Nathaniel Brahms
Provides a 5x-50x speedup over interp2


Updated 31 May 2006

No License

This function performs 2-dimensional interpolation similar to MATLAB's built-in function interp2 with a considerable speed advantage.

qinterp2 may only be used with evenly-spaced, monotonically increasing X and Y library arrays. In addition, there is little error checking on these inputs, as qinterp2's speed boost is derived from avoiding manipulation of these arrays. See the attached image for how interp2 and qinterp2 compare vs. input length. The test was performed on a 2.4GHz Intel Windows XP machine running MATLAB 7 R14SP3.

See file id 10286 (Fast interpolation) for the one-dimensional version of this file.

Cite As

Nathaniel Brahms (2022). Fast 2-dimensional interpolation (, MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R14SP3
Compatible with any release
Platform Compatibility
Windows macOS Linux

Inspired by: Fast interpolation

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