版本1.1.7563.3712
Functions
Additional components that add new mathematical functions to the SMath Studio program, necessary for solving problems from various fields.
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fft("matrix")
One-dimensional forward Fast Fourier Transform. -
fft("1:matrix", "2:number")
One-dimensional "2:number"-point forward Fast Fourier Transform of "1:matrix" input. If "2:number" is smaller than the length of the input, the input is cropped; if it is larger, the input is padded with zeros. -
fft("1:matrix", "2:number", "3:string")
One-dimensional "2:number"-point forward Fast Fourier Transform of "1:matrix" input and "3:string" output normalization. If "2:number" is smaller than the length of the input, the input is cropped; if it is larger, the input is padded with zeros. -
fft2("matrix")
Two-dimensional forward Fast Fourier Transform. -
fft2("1:matrix", "2:number")
Two-dimensional "2:number"-points forward Fast Fourier Transform of "1:matrix" input. If "2:number" values are smaller than the length of the input, the input is cropped; if are larger, the input is padded with zeros. -
fft2("1:matrix", "2:number", "3:string")
Two-dimensional "2:number"-points forward Fast Fourier Transform of "1:matrix" input and "3:string" output normalization. If "2:number" values are smaller than the length of the input, the input is cropped; if are larger, the input is padded with zeros. -
fftfreq("number")
Return the Discrete Fourier Transform sample frequencies for a "1:number" window length. -
fftfreq("1:number", "2:number")
Return the Discrete Fourier Transform sample frequencies for a "1:number" window length with "2:number" sample spacing. -
fftmagnitude("matrix")
Get the magnitude of a transform. This is the built-in abs(1) for matrices. -
fftphase("matrix")
Get the phase of a transform. This is the built-in arg(1) for matrices. -
fftshift("matrix")
Shift the zero-frequency component to the center of the spectrum. Use ifftshift to do the inverse operation. -
ifft("matrix")
One-dimensional backward Fast Fourier Transform. -
ifft("1:matrix", "2:number")
One-dimensional "2:number"-point backward Fast Fourier Transform of "1:matrix" input. If "2:number" is smaller than the length of the input, the input is cropped; if it is larger, the input is padded with zeros. -
ifft("1:matrix", "2:number", "3:string")
One-dimensional "2:number"-point backward Fast Fourier Transform of "1:matrix" input and "3:string" output normalization. If "2:number" is smaller than the length of the input, the input is cropped; if it is larger, the input is padded with zeros. -
ifft2("matrix")
Two-dimensional backward Fast Fourier Transform. -
ifft2("1:matrix", "2:number")
Two-dimensional "2:number"-points backward Fast Fourier Transform of "1:matrix" input. If "2:number" values are smaller than the length of the input, the input is cropped; if are larger, the input is padded with zeros. -
ifft2("1:matrix", "2:number", "3:string")
Two-dimensional "2:number"-points backward Fast Fourier Transform of "1:matrix" input and "3:string" output normalization. If "2:number" values are smaller than the length of the input, the input is cropped; if are larger, the input is padded with zeros. -
ifftshift("matrix")
The inverse of fftshift; the function differ by one sample from fftshift for odd-length dimensions. -
irfft("matrix")
One-dimensional backward Fast Fourier Transform for real input. -
irfft("1:matrix", "2:number")
One-dimensional "2:number"-point backward Fast Fourier Transform of "1:matrix" real input. Since ("2:number"/2)+1 input points are needed to have "2:number" output points, the input will be cropped or padded with zeros. -
irfft("1:matrix", "2:number", "3:string")
One-dimensional "2:number"-point backward Fast Fourier Transform of "1:matrix" real input and "3:string" output normalization. Since ("2:number"/2)+1 input points are needed to have "2:number" output points, the input will be cropped or padded with zeros. -
rfft("matrix")
One-dimensional forward Fast Fourier Transform for real input. -
rfft("1:matrix", "2:number")
One-dimensional "2:number"-point forward Fast Fourier Transform of "1:matrix" real input. If "2:number" is smaller than the length of the input, the input is cropped; if it is larger, the input is padded with zeros. -
rfft("1:matrix", "2:number", "3:string")
One-dimensional "2:number"-point forward Fast Fourier Transform of "1:matrix" real input and "3:string" output normalization. If "2:number" is smaller than the length of the input, the input is cropped; if it is larger, the input is padded with zeros.