
XPRISM2(INPUT_FUNCTION)      Khoros       XPRISM2(INPUT_FUNCTION)

     OVERVIEW

     Plots may be generated and displayed using the "Input Func-
     tion" pane of the "Plot" subform. The first plot to be
     created and displayed causes the graphics workspace to be
     created.

     More than one plot may be displayed in the same window;
     each time the user fills in the "Function" parameter and
     clicks on "Plot Function", the new plot will be added to the
     graphics workspace. Plots may be hidden using the "HIDE"
     action button on the guide pane of the main Xprism2 form, or
     deleted using the "DELETE" action button.  Until the graph-
     ics workspace is destroyed using the "CLEAR" action button,
     each new plot will continue to be added to the existing
     graphics workspace.

     Each plot that is created will be displayed according to the
     plot type that was selected on the "Input Function" pane.
     Thus, by changing the plot type before each new plot is
     displayed, any of the five plot types may be displayed
     simultaneously in the graphics workspace.

     Twenty (20) plots may be displayed in a workspace; however,
     for readability, five (5) is the recommended limit.  If one
     has access to a color workstation, it is much easier to dis-
     tinguish plots from each other than if one is working on a
     monochrome workstation.

     The following list describes the options available on the
     "Input Function" pane.

     Function

          The user will specify the function to plot.

     X Range

          The user will specify the function minimum, maximum and
          number of data points

     Points to Be Displayed

          The option labeled "Points to be Displayed" allows the
          user to window on a specified portion of the data. In
          addition to windowing, the user may also subsample the
          data to be displayed. All data is read in when the
          "Plot File" button is clicked with the mouse; the
          "Points to be Displayed" option works on that data.
          Once plotted, the window and subsampling parameters may
          be changed for each currently displayed plot using the
          "Attributes" subform. The "Points to be Displayed"
          option has three items that can be changed. The follow-
          ing explains these options:

          Step Size
               This "Step Size" option specifies how the data
               should be subsampled between the begin point and
               the end point. The default value is 1; ie, every
               point is used.

          Begin Point
               The "Begin Point" specifies the first of the data
               points to plot. That is, which data point to begin
               with, the data points being numbered sequentially.
               For example, if the "Begin Point" is specified as
               5, the plot will start with the fifth data point.
               If the "Begin Point" is set to 0 (the default
               value), then the "end point" is ignored and all
               data points are used.

          End Point
               The "End Point" specifies the last of the data
               points to plot. That is, which data point to end
               with, the data points being numbered sequentially.
               For example, if the "End Point" is specified as
               25, the plot will end with the twenty-fifth data
               point. If the "End Point" is set to 0 (the default
               value), then the last data point in the file is
               used as the end point.

     Plot Type

          Each plot that is input will be displayed as the plot
          type that is indicated by the "plot type" toggle in the
          "Input File" pane.  Thus, by changing the plot type
          before each new plot is displayed, any of the five plot
          types may be displayed simultaneously in the graphics
          workspace.

     See the associated HELP for valid functions and ploting
     functions.

     Copyright 1991, University of New Mexico. All rights
     reserved.

Khoros                    Release: 1.0                          1

