-glineplot: Plots a field component along a line.

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 # Flags: nomenu, noprompt, nomessage,                                        #
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 # section: -glineplot                                                        #
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 # symbol    = e_1                                                            #
 # quantity  = e                                                              #
 # solution  = 1                                                              #
 #                                                                            #
 # startpoint= ( 0.0, 0.0, -1.0e+30 )                                         #
 # direction = ( undefined, undefined, undefined )                            #
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 # plotopts = -geometry 690x560+10+10                                         #
 # showtext = yes                       -- (yes | no)                         #
 # onlyplotfiles= no                    -- (yes | no)                         #
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 # @gvreal= undefined       @gvimag= undefined      @gvabs= undefined         #
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 # doit, ?, return, end, help, ls                                             #
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• symbol= QUAN_ISOL:
  This is the full name of the symbol to be processed.
• quantity= QUAN:
  This is the first part of the "symbol".
• solution= ISOL:
  This is the last part of the "symbol", the index of the "symbol".

• startpoint= (X0, Y0, Z0):
  The point from where the lineplot shall be started. That point must lie within the computational volume.
• direction= ( Xn, Yn, Zn ):
  The direction of the line along which the plot shall be generated.
• plotopts= ANY STRING CONTAING OPTIONS FOR THE PLOT-PROGRAMS:
  gd1.pp does not display the data itself, but writes a datafile for mymtv2 (1D and 2D data) or gd1.3dplot (3D data) and starts mymtv2 or gd1.3dplot to display these data.
  Useful options are:
  • -geometry X11-GEOMETRY Initial geometry for the X11 window of mymtv2 or gd1.3dplot.

• showtext= [yes|no]:
  This flags, whether the annotation text shall appear in the plots.

• onlyplotfiles= [yes|no]:
  This flags, whether plotfiles shall be written AND mymtv2 or gd1.3dplot shall be started to display them on an X11 display, or whether only the plotfiles shall be produced.

• doit:
  The plot is generated. Only the component of the field in direction will be plotted. The component is plotted as a function of u.

  The lineplot is performed a line
  

  $$(x,y,z) = (X_0,Y_0,Z_0) + u \cdot (X_n, Y_n, Z_n) / \sqrt{X_n^2+Y_n^2+Z_n^2}$$
  
  

  As a sideeffect, the complex voltage as seen by a particle is integrated.
  

  $$v = \int\limits_0^{u_{max}} f(u) \exp\left({\rm j}\frac{ 2 \pi f u } { \beta c } \right) \; du$$
  
  
  $\beta$ is fixed to $\beta=1$, and $f$ is the frequency of the resonant field. The result of the integration is shown in the menu. The value of the integral is also accessible as the symbolic variables @gvreal, @gvimag, @gvabs.