diffDifference and discrete derivativeCalling Sequencey=diff(x)
y=diff(x [,n [,dim]])
Argumentsxvector or matrix (real, complex, sparse or polynomial)ninteger the order of differentiationdiminteger or character string with values "r","c" and "*"yscalar or vector/matrixDescriptiony=diff(x) compute the difference function
y=x(2:$)-x(1:$-1)diff(x,n,dim) is the nth
difference function along dimension dim.
diff(x,n,"*") is equivalent to
diff(x(:),n).
Default value for n is 1. Default value for
dim is "*".
dim='r' is equivalent to dim=1
and dim='c' is equivalent to
dim=2.
ExamplesSee Also
interp
interp2d
splin
eval_cshep2d
derivative
numdiff