Dimension Expansion Toolbox

Expands functions to usage of N dimensional inputs.

Listed below are some examples to demonstrate the power of the toolbox. For detailed usage please refer to the NDOP function in the toolbox.
(1) Expansion of SUM : Concept Study.
Y = ndop(@sum,X,DIM)

is equal to the usage of the common SUM function, but constitutes the concept the simplest way.

(2) Expansion of the DCT : First Usage.

Y = ndop(@dct,X,DIM,N)

expands the DCT to N dimensions, where DIM is the operating dimension, N the padding/truncating length and X the N-D array input.

(3) Exp. of INTERSECT : Binary Usage.

[C,AI,BI] = ndop(inf,@intersect,A,B,DIM)

is the INTERSECT function expanded for the usage of N-D arrays A,B, where DIM is the operating dimension.

(4) Demonstrating Trimlength Usage T,
by expanding the UNIQUE function

B = ndop(T,@unique,1,A,DIM);
A = [1,1,1;1,2,3]

(a) Maximum Trimlength T = inf
B = [1,NaN,NaN;1,2,3]

(b) Minimum Trimlength T = -inf
B = [1;1]

(c) Fixed Trimlength T = 2
B = [1,NaN;1,2]