graphics: REPRESENTATION: item


BOX-TICKMARKS

  Polyline and fill area item: the polyline item corresponds to
  the coordinate axes, the fill area item is used in 3D diagrams
  for the 3 backmost panels of the box.

  The fill area item should in principle have an interior style
  of "solid" and a light colour. The colour will not be used as
  such - rather, various shades will be used depending on the
  exposition of the panel with respect to the light source.

COMMENT

  Polyline item: clarifying lines such as boundaries.
  Text item: the information underneath the title.

CONDUCTORS-1

  Fill area item: conductors in the chamber as entered
  with the SOLIDS statement, but also the wires when asking
  for a 3D plot of a chamber in which the field is computed
  from wire locations rather than a field map.

  This representation is used in 3D diagrams. The interior
  style should in principle be set to "solid". The colour is
  not used as such, rather various shades of it will be used
  depending on the exposition of the various surface panels
  with respect to the light source.

CONDUCTORS-2

  Fill area item: conductors in the chamber as entered
  with the SOLIDS statement and for which a representation
  with this type was explicitely requested.

  This representation is used in 3D diagrams. The interior
  style should in principle be set to "solid". The colour is
  not used as such, rather various shades of it will be used
  depending on the exposition of the various surface panels
  with respect to the light source.

CONDUCTORS-3

  Fill area item: conductors in the chamber as entered
  with the SOLIDS statement and for which a representation
  with this type was explicitely requested.

  This representation is used in 3D diagrams. The interior
  style should in principle be set to "solid". The colour is
  not used as such, rather various shades of it will be used
  depending on the exposition of the various surface panels
  with respect to the light source.

CONTOUR-HIGHLIGHT

  Polyline item: the highlighted contours in the field section
  (PLOT CONTOUR) and drift section (TABLE CONTOUR).

CONTOUR-LABELS

  Text item: the function values plotted on the contours
  if contour labeling has been requested (PLOT CONTOUR LABEL).

CONTOUR-NORMAL

  Polyline item: the normal contours in the field section
  (PLOT CONTOUR) and drift section (TABLE CONTOUR).

C-WIRES

  Fill area item: the wires of type C are plotted using this
  representation if the WIRE-MARKERS option is on.

DIELECTRICA-1

  Fill area item: the dielectrica in the chamber as entered
  with the SOLIDS statement.

  This representation is used in 3D diagrams. The interior
  style should in principle be set to "solid". The colour is
  not used as such, rather various shades of it will be used
  depending on the exposition of the various surface panels
  with respect to the light source.

DIELECTRICA-2

  Fill area item: the dielectrica in the chamber as entered
  with the SOLIDS statement and for which this representation
  was explicitely requested.

  This representation is used in 3D diagrams. The interior
  style should in principle be set to "solid". The colour is
  not used as such, rather various shades of it will be used
  depending on the exposition of the various surface panels
  with respect to the light source.

DIELECTRICA-3

  Fill area item: the dielectrica in the chamber as entered
  with the SOLIDS statement and for which this representation
  was explicitely requested.

  This representation is used in 3D diagrams. The interior
  style should in principle be set to "solid". The colour is
  not used as such, rather various shades of it will be used
  depending on the exposition of the various surface panels
  with respect to the light source.

E-DRIFT-LINE

  Polyline item: Electron drift lines.

ERROR-BAND

  Polyline and fill area: Error bands plotted with the
  PLOT_ERROR_BAND procedure call.

ERROR-BAR

  Polyline and fill area: Error bars plotted with the
  PLOT_ERROR_BAR procedure call. Also used for the graphs
  made by the fitting routines.

FUNCTION-1

  Polyline and polymarker item: the primary graph in a plot,
  such as PLOT GRAPH or DRIFT TRACK TIME-GRAPH.

FUNCTION-2

  Polyline and polymarker: the secondary graph in a plot,
  for instance the integrated diffusion in the x(t) plot.

FUNCTION-3

  Polyline and polymarker: not yet used.

GRID

  Polyline used to draw the coordinate grid on the plots.

ION-DRIFT-LINE

  Polyline item: ion drift lines.

ISOCHRONES

  Polyline and polymarker item: the isochrones in a drift
  line plot.

  With the default settings, an attempt is made to link the
  points on an isochrone with lines.

  When a point on an isochrone can not be linked to another
  point of the same contour, a marker is plotted on the drift
  line.

LABELS

  Text item: the labels along the axes. This item is also used
  for the '10**n' part of the scaling factor, the exponent is
  plotted with the item NUMBER.

MATERIAL-1

  Fill area item: used with field maps to draw the area covered
  by the material with the lowest dielectric constant.

MATERIAL-2

  Fill area item: used with field maps to draw the area covered
  by the material with the 2nd lowest dielectric constant.

MATERIAL-3

  Fill area item: used with field maps to draw the area covered
  by the material with the 3rd lowest dielectric constant.

MATERIAL-4

  Fill area item: used with field maps to draw the area covered
  by the material with the 4th lowest dielectric constant.

MATERIAL-5

  Fill area item: used with field maps to draw the area covered
  by the material with other dielectric constants.

MESSAGE

  Text item: the line asking you to hit return to signal
  to the program that it can continue.

NUMBERS

  Text item: the numbers along the coordinate axes. This item
  also covers the exponent if the scale is more than 1 decade.

OTHER-WIRES

  Fill area item: the wires of type other than S, P and C are
  plotted using this representation if the WIRE-MARKERS option
  is on.

OUTLINE

  Polyline item: the outer limits of the solids as shown in
  3D and CUT type plots.

PLANES

  Polyline and fill area item: the planes in the cell (PLANE
  statement).

  The fill area item is used in 3D diagrams. The representation
  should in principle have an interior style of "solid". The
  colour is not used as such, rather various shades of it will
  be used depending on the exposition of the plane with respect
  to the light source.

P-WIRES

  Fill area item: the wires of type P are plotted using this
  representation if the WIRE-MARKERS option is on.

S-WIRES

  Fill area item: the wires of type S are plotted using this
  representation if the WIRE-MARKERS option is on.

TITLE

  Text item: the global title of the plot.

TRACK

  Polyline and polymarker item: This can be either of 2 things:

  - the straight line segment that you have entered via TRACK
  - the series of interaction points with the gas of the particle
    that passes through the chamber

  The two kinds of tracks coincide unless

  - the particle has too little energy to reach the end-point of
    the specified line segment
  - the particle undergoes multiple scattering and deviates from
    its original trajectory

  In both cases, the track can be a point in some circonstances.
  in that event, a marker is used rather than a line.

DELTA-ELECTRON

  Polyline and polymarker item: Delta electrons look like a
  hairs along the track. They result from particularly large
  energy transfers of the particle to an electron of a gas
  molecule. The electrons thus liberated from the molecule
  have sufficient energy to ionise further gas molecules before
  drifting towards the anodes.

  If the delta electron generates several further electrons,
  then it will be drawn as a line, otherwise as a marker.

AUGER-ELECTRON

  Polyline and polymarker item: Auger electrons result from
  the return of an excited atom to a lower energy state by the
  emission of an electron rather than a photon - an mechanism
  known as Auger effect. The electron that is emitted may have
  enough energy to ionise further gas molecules, in which case
  these electrons look like delta electrons.

  If an Auger electron generates secondary electrons, then a
  line is drawn showing its trajectory. Otherwise a marker
  indicates the point where it was produced.

PHOTON

  Polyline and polymarker item: When a particle ionises a gas
  molecule, the molecule can return to its ground state by
  emitting a photon, which can be absorbed further on by another
  gas molecule.

TUBE

  Polyline item: the tube enclosing the wires (TUBE statement).

WIRES

  Fill area item: Wires are plotted as areas to allow them to
  be picked in the GRAPHICS-INPUT instruction. By default, the
  wires are plotted such that they look like lines - watch out !

Keyword index. Formatted on 10/11/98.