fast interpolation for uniform grid

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Erik Johnson
Erik Johnson 2014-11-3
编辑： Erik Johnson 2014-11-3
For repeated interpolation calls, the griddedInterpolant is much faster than interp1. However, MATLAB's interp1 used to have an option for faster behavior when the grid was uniform (method '*linear', which now reverts to 'linear'). A simple code for linear interpolation on a uniform 1-D grid can approach an order of magnitude faster than griddedInterpolant.
There are a number of functions on the MATLAB File Exchange to do this, but is there an approach using griddedInterpolant that can achieve faster results?

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