Upsample

Upsample[array,n] returns an upsampled version of the array by inserting n-1 zeros between array elements.

Upsample[array,n,offset] shifts array so that its first element moves to the position offset in the resulting array.

Upsample[array,n,offset,val] inserts n-1 elements of value val between array elements.

Upsample[image,…] upsamples an image.

Please visit the official Wolfram Language Reference for more details and examples on core symbols.