BUILDIND_1.2 - Facility to construct .ind files for DROG3DDT and 
               PSEUDO-QUODDY


Read the vizicq4.readme first to get a feel for the GUI layout.
BUILDIND is similar to VIZICQ4.

BUILDIND provides a GUI-based facility for building the input
file for DROG3DDT and PSEUDO-QUODDY

 * Load a mesh - See vizicq4.readme.

 * Contouring the bathymetry - Enter the values of the bathymetry
   to contour in the "Z-Contours:" space.  The default is to 
   compute contours over the range of the bathymetry, at 5 
   values equally spaced between the min and max depths.
   "linspace(zmin,zmax,7)", the default, gives the following
   for the bank150 mesh;  
      -150. -128.3 -106.7  -85.  -63.3  -41.7  -20.
   Note that the first and last values are not used.  
   Any string can be entered that evaluates in MATLAB to a 
   vector.  For example, to set contour values of -120 -90
   -60 -30, enter [-120 -90 -60 -30] or [-120:30:-30].  
   Contours can be labled (press the LabC button) or deleted
   (press the DelC button).

 * Generating drogue starting positions - On the right of the main
   figure, there are 4 mutually exclusive buttons.  Pressing any
   one of these selects that basic distribution of particles for 
   the .ind file.  Once selected, enter any changes to the default
   parameters in the appropriate, corresponding spaces.

   There are 4 types of "distrubutions".
   1) Box - rectangular, defined by (Nx,Ny) the number of points
            in the x,y dir.  The Z: space allows multiple
            vertical levels to be generated.  The default is 
            a surface layer (at z=-1 meters), 25 x 25.  The mouse
            is used to drag a box on the FEM grid that the 
            (Nx,Ny) area will cover.  
            Example: (Nx,Ny)=(25,25), Z = [-1 -15] will generate
            2 layers at depths of 1 and 15 meters below z=0.

   2) Cloud - The mouse is used to specify the horizontal center
      of mass of the cloud, with variances in the (x,y,z) directions
      of (Sx,Sy,Sz).  The (Sx,Sy) values are in grid coordinates; 
      i.e., meters if the grid is cartesian, or in degrees if the grid
      is in Lon,Lat.  The "cloud" thus consists of N locations in
      an ellipsoid.

   3) Line - The mouse is used to specify a line of drogues,
      multi-leveled if Z: contains more than one depth value.
      Alternatively, the end-points can be explicitly provided.

   4) Scatter - this option reads a file of starting positions
      in 3-column format (x,y,z).

   The exact locations of the drogues can be fine-tuned with the 
   rotation/translation buttons at the bottom of the right side
   of the main figure.

 * Pressing another (or the same) distribution button ERASES the 
   current set of coordinates.  I.e., two boxes, or a box and 
   cloud can't be specified simultaneously, for example.  
   However, two separate files could be generated and merged
   by hand.  
 
 * Outputing the .ind file - To see what the final (horizontal)
   distribution of drogues looks like, press the "Filter Ind"
   red button in the top right corner.  This determines
   which drogue locations are within the FEM domain, both 
   horizontally and vertically.

   To write the .ind file, press the "Write Ind" button.
   This automatically filters the starting locations (as above)
   and opens a final figure to allow editing of the default
   .ind file parameters.  The starting time for the drogue
   release is also specified here, in (YEAR, YEARDAY) format.

   In this version, only one starting time can be specified
   and it applies to all drogues.  Clearly, the .ind
   file can be editted by hand to specific starting times,
   easy enough for a small numnber of drogues.