iadftmatrixexamples

Demo Script

Kernel images generated

Imaginary and real parts of the DFT kernel.

>>> A = iadftmatrix(128)

>>> Aimag, Areal = A.imag, A.real

>>> iashow(Aimag)

(128, 128) Min= -0.0883883476483 Max= 0.0883883476483 Mean=-0.000 Std=0.06

>>> iashow(Areal)

(128, 128) Min= -0.0883883476483 Max= 0.0883883476483 Mean=0.001 Std=0.06


Aimag	Areal

Three first lines

Three first lines from imaginary and real parts of the kernel matrix. Observe the increasing frequencies of the senoidals (imaginary part) and cossenoidals (real part).

>>> g,i1 = iaplot(Aimag[0,:])

>>> g,i2 = iaplot(Aimag[1,:])

>>> g,i3 = iaplot(Aimag[2,:])

>>> g.plot(i1,i2,i3)

>>>

>>> g,r1 = iaplot(Areal[0,:])

>>> g,r2 = iaplot(Areal[1,:])

>>> g,r3 = iaplot(Areal[2,:])

>>> g.plot(r1,r2,r3)

>>>


Aimag[0,:]	Aimag[1,:]


Aimag[2,:]	i1,i2,i3


Areal[0,:]	Areal[1,:]


Areal[2,:]	r1,r2,r3

iadftmatrixexamples Demonstrate the kernel matrix for the DFT Transform.

Demo Script

Kernel images generated

Three first lines

iadftmatrixexamples
Demonstrate the kernel matrix for the DFT Transform.