VIEW2D(1)                                               VIEW2D(1)

     NAME
          view2d - movie of a function f(x, y, t)

     SYNOPSIS
          view2d [ option ...  ] file

          regrid [ option ...  ] file

          vdata [ option ...  ] file

     DESCRIPTION
          View2d displays a sequence of functional surfaces on a 5620
          or color display.  On the 5620, the surface is ruled with a
          square mesh and projected isometrically; on a color display,
          the surface is viewed from above, with height indicated by
          color.  The options are:

          -T5   output on the 5620; -T5 is the default when TERM (see
                environ(7)) is 5620.

          -Tc   output on color display; -Tc is the default when TERM
                is not 5620.

          -Tp   produces input for plot(1) to produce contour plots.

          -cn   use n colors (n=32 by default) or contours (6 by
                default).

          -ps   run movie for s seconds (s=5 by default).

          There are two supported ways to generate input for view2d.
          Vdata takes ASCII input and allows scattered data; view2d(3)
          can be called from a program that already has data on a
          grid.

          Regrid changes the grid sizes in view2d binary files, with
          options:

          -b        adds a bar at the bottom of the image indicating
                    time.

          -nNX[,NY] output grid is NX by NY.

          -fNF      output will have NF frames.

          -r        the plane of closest fit to the first frame is
                    subtracted from all the frames.

          -mfmin,fmax
                    clips the data to the range fmin,fmax.

     VIEW2D(1)                                               VIEW2D(1)

          One option applies to both view2d and regrid:

          -tTS[,TE]
                  displays frames from TS (default first frame time)
                  to TE (default last frame time).

          Vdata takes input in the following format and converts to
          input for view2d. The first line of each frame has the num-
          ber of data points in the frame (an integer) and the time (a
          floating point value).  The rest of the lines in the frame
          consist of x y z triples.  The order of points is irrele-
          vant.  Every (floating point or integer) number must be
          white space separated.  The options are:

          -nNX[,NY]
                  output grid is NX by NY.

          -c      use piecewise constant rather than linear interpola-
                  tion.

          -s      scatterplot the data on a black background.

          -i      the data is already on a square grid, in the order x
                  and y ascending with x varying fastest.

     SEE ALSO
          view2d(3), view2d(5)
          Exotic options for photography, color maps, and halftone are
          described in /usr/lib/view2d/howto.