檢視 $DFTallField 的原始碼

=='''Format'''==
 $DFTallField
  ''ifoutput''
  ''Intype    f<sub>i</sub>    f<sub>f</sub>    N''          <font color=green>// ''ifoutput'', ''Intype'', and ''N'' are integers, the others are floating points.</font>

<font size=3>
This function allows the program to calculate the field of certain frequencies by discrete Fourier transform (DFT).<br><br>
'''''ifoutput''''': 1 means the program outputs the DFT results at output-step. 0 means it outputs results only after time-step. <br>
'''''Intype''''': 1 means ''f<sub>i</sub>'' and ''f<sub>f</sub>'' are frequencies; on the other hand, 2 means they are wavelengths.<br>
'''''f<sub>i</sub>''''': initial frequency or wavelength.<br>
'''''f<sub>f</sub>''''': final frequency or wavelength.<br>
'''''N''''': the number of frequencies or wavelengths you want to calculate between ''f<sub>i</sub>'' and ''f<sub>f</sub>''. <br>
</font>

=='''Example'''==
 $DFTallField
  1
  2    400e-9    400e-9    1

== '''Related commands''' ==
: [[$DFTallField]], [[$CalGeneration]]