What is the bicubic interpolation function in Julia

General Usage
,
1

I wish to interpolate an image by a factor of 2, both horizontally and vertically. What is the bicubic interpolation operator in Julia that is the counterpart of interp2 in Matlab?

2

Take a look at Interpolations.jl package which has number of options for configuring interpolation algorithm.

3

Thanks to the rely. I am currently using:
using GR
X = Y = 1:2:512
Xq = Yq = 1:512
yy=y1[1:2:512,1:2:512]
Zq = interp2(X, Y, yy, Xq, Yq, 3)

(here y1 is a 512-by-512 matrix)
However, the result is slightly different from Matlab’s result.