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   Visualization program which loads the isosurfaces previously calculated
   using r3.mkdspf and displays them according to commands given at the
   prompt. r3.mkdspf creates a dspf file from the 3D raster and
   r3.showdspf uses this dspf file to draw isosurfaces and 3d raster map
   to draw planes and everything related (boxes, etc).
   Upon initialization of the program, two graphics windows are opened,
   one for the color table and the other for data display. The display
   window initially contains a red bounding box. Command options are then
   printed to the terminal and user is prompted for drawing instructions:
THE INTERACTIVE OPTIONS ARE:

?, (l #), L, (t #), (T # #), I, +, -
(x #) (y #) (z #) r (X #) (Y #) (Z #)
(B(x,y,z)#), (E(x,y,z)#), S, R, F, C, c, s, b, g, n, p[#], d, D, w, Q, h

 USAGE AND MEANING:

 ?         lists available thresholds
 l index# [index#...]  add threshold to display list
 L         Draw current display list
 t index#  reset so only this threshold is displayed
 T index# index#   show thresholds between hi & lo
 I         toggle thresholds INSIDE hi/lo or OUTSIDE hi/lo
 +(+++)    display thresholds with consecutively increasing index#
 -(---)    display thresholds with consecutively decreasing index#

 x int#  absolute rotation around x-axis in degrees(int)
 y int#  absolute rotation around y-axis in degrees(int)
 z int#  absolute rotation around z-axis in degrees(int)
 r       rotate_model
 X int#  scale model in x
 Y int#  scale model in y
 Z int#  scale model in z

 B(x,y,z)int#  begin display along (x,y,z) axis at #
 E(x,y,z)int#  end display along (x,y,z)axis #
 S int#        specular highlight control
 R   resets display along axis to show all data
 F grid3name colortablename load new color file

 C   toggles the clear flag
 c   clears the display (no thresholds)
 s   swap buffers
 b   toggles draw a box
 g   toggles grid
 n   toggle surface normal direction

 p   draw all walls
 p#  draw a wall: 1-top, 2-bottom, 3-east, 4-west, 5-north, 6-south

 d   draw (implement the option)
 D   draw a solid defined by T(isosurface + parts of walls)

 w   dump image to a file
 Q   QUIT
 h   help

 enter desired manipulations then press return
 >>


  Hints:

     * To navigate around the data, use the r command, then place the
       mouse pointer in the graphics window and drag with the left mouse
       to rotate the bounding box. To zoom in and out, drag right or left
       with the middle mouse. When satisfied with the new viewing
       position, click with the right mouse.
     * To quickly view a series of isosurfaces, enter a series of + or -
       characters, i.e. +++++++
     * Scripts using above commands on separate lines may be directed to
       r3.showdspf as standard input. Use the # sign as the first
       character on a line to indicate a comment.

ÐÐ ÐÐÐÐ

   After generating a "dspf" control file with r3.mkdspf start
   r3.showdspf. Display/add the layers using "+".
   List available thresholds with "?". Use "l" to select isosurfaces
   (available number can be adjusted with r3.mkdspf) and "L" to display:
   l 1 2 3 4 5
   L

   To select and display a single threshold (here: 2), use:
   t 2

   To select and display a range of thresholds (here: 3-5), use:
   T 3 5
   D

   To draw a box, enter
   p
   the p# to plot a selected wall (here top wall):
   p1

   Tp draw a cut-off box, define it's position
   Ex20
   p
   Here Ex20 defines the x coordinate of the end of the box.

   In general - p draws a side of a box, E, B, define where that box
   starts or ends, so to make a fence diagram, the user draws sides of a
   series of boxes which have their starting (or ending) side shifting by
   a given interval. (this way the user can draw even more complex fence
   diagrams which have perpendicular fences, by using Ey or By). It is
   sufficient to use only E or B depending whether fence are drawn by
   using the end side or front side of a box).
   To draw a fence, a sequence like this would be needed
   Ex10
   p5
   Ex15
   p5
   Ex20
   p5
   Ex25
   p5
   or the same would be
   Bx10
   p6
   Bx15
   p6
   Bx20
   p6

   The p is needed for the fence diagram, solids and boxes.

СÐ. ТÐÐÐÐ

   [1]r3.mkdspf

ÐÐТÐРЫ

   Bill Brown, [2]brown@gis.uiuc.edu

   Last changed: $Date: 2006-12-21 08:27:27 -0600 (ЧÑ, 21 дек 2006) $

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References

   1. file://localhost/root/tmp/2/fin/r3.mkdspf.html
   2. mailto:brown@gis.uiuc.edu