                         GRAPH and DATA Samples
                         ----------------------

    This file is the documentation for the graph and data samples that
are provided with the LinePlot program. These sample files are placed
into sub-directories off of the main directory to which you installed
LinePlot. The directory organization is:

  ..\Samples -- The main samples directory that contains this file.

  ..\Samples\HiColor -- This directory contains a number of sample
                graph files that are generally set up to make maximum
                use of high color displays, i.e. displays with a
                color depth of greater than 256 colors.

  ..\Samples\256Color -- This directory contains a number of sample
                graph files that will display correctly on displays set
                to a color depth of 256 colors.

  ..\Samples\Data -- This directory contains all the raw data files that
                were used to generate the sample graphs.

All of the sample files follow the default file extension convention used
by LinePlot. This convention is:

    *.PL2 - Complete graph files. To display these files, start LinePlot,
            then use the File->Open menu item to select the graph that
            you want loaded.

    *.DAT - These are the actual files containing the data that is
            plotted. These are ASCII files, and are viewable or
            changeable by using your favorite ASCII text editor, or
            LinePlot's built in data editor.


LinePlot Reference
------------------

    These are two reference charts for LinePlot which give examples of
the available line types, line widths, colors, symbols, and symbol
sizing. These charts also take advantage of LinePlot's ability to
suppress the display of axis labels. Due to their nature as reference
material, only the graph files are provided.

    REF-01.PL2 - The reference chart for line and symbol types, and
                 line widths. Updated since previous release to use
                 thicker line widths.

    REF-02.PL2 - The reference chart for symbol sizes. This chart also
                 gives a good example of the program's color handling
                 capability.


Jurrassic Park Death Rate
-------------------------

    With apologies to Steven Spielberg and the Jurassic Park movie, this
graph illustrates using LinePlot with a log-log type graph to compare
measured data with what is theoretically predicted. Quite obviously all
of this "data" is completely fictional, but we're using this to make a
point. If you look at the data files, you will see that each of them has
a completely different number of data points. This graph also
illustrates the use of a different background color, other than the
standard white, for the graph as well as the use of symbols to show the
values of discrete data points, unconnected with lines. The graph makes
use of an arrow-less wide leader to high light a specific, single data
point. Additionally, the legend capability is demonstrated, with legends
added to the right side of the graph.

The files for this graph are:

    JUR_PARK.PL2 - Contains the finished graph that is viewable by
                   LinePlot.

    JP_THEO.DAT  - The data file for the 2 point line describing the
                   theoretical or predicted rate.
    JP_SITEA.DAT - The measured data for the first Jurassic Park. (The
                   parks were so successful <?> that they became a chain
                   operation.)
    JP_SITEB.DAT - The measured data for the second Jurassic Park.



SIN (X)/X & COS (X)/X
----------------------

    The SIN (X)/X and COS (X)/X graph is a simple graph of the
mathematical functions:

            y = sin (x) / x
    and:    y = cos (x) / x

    The sample here illustrates using some of the different tick marking
styles and introduces the concept of actually making a separate data
file to highlight an area of the graph, in this case a unique line type
to mark the y = 0 value. The major tick marks on this graph are done
with wide tick mark style. This graph also makes use of a data file
which contains more than a single set of data. Relatively wide lines
are used for the graph frame and the data lines.

The files for this graph are:

    SINCOS.PL2   - Contains the finished graph. Load into LinePlot to
                   view the final graph.

    SINCOS.DAT   - Contains the data for both the sin(x)/x and cos(x)/x
                   curves that are plotted.
    SNCSBSLN.DAT - Contains the data for the 2 point line that
                   highlights the y=0 value on the graph.


Exponential Curves
------------------

    A graph of two exponential curves,

           Y = 9.43 exp ^ (-.43 * X) and
           Y = 9.43 exp ^ (-.11 * X)

    This graph illustrates a log-log type plot using the formatting
entries available in the Axis set-up dialogs, rather than the defaults,
for displaying values on the graph's axises. The vertical axis shows
the use of scientific notation, while the horizontal axis is more
conventional. Finally, this graph illustrates legends that are placed
on the top of the graph, beneath the title.


    EXPCURVE.PL2 - The entire sample graph, viewable by the LinePlot
                   program.

    EXPCURVE.DAT - The data file for both curves shown on the final
                   graph.


Rectangular Antenna Pattern
---------------------------

    This sample graph is an antenna pattern of a directional, high gain
antenna. The antenna pattern presentation is done in a rectangular
manner, with the graph's X-axis being degrees off of the antenna's
centerline. Illustrated in this sample is the use of the new, zero
axis marking feature. We have also colored the background of the
graph. This is a relatively simple graph, with an obvious engineering
orientation. The only noteworthy thing about this graph is that its
single data file contains a large number of data points.

    RECTANT.PL2 - The entire graph, viewable by the LinePlot program.

    RECTANT.DAT - The single data file for the rectangular antenna
                  pattern. The first column of data in this file is the
                  angle off antenna boresight, with the second column
                  being the measured gain of the antenna.


Polar Antenna Pattern
---------------------

    The polar antenna pattern graph illustrates what can be done with a
little imagination, the capabilities of LinePlot, and a spreadsheet or
LinePlot's built in data editor. The antenna data that is being presented
in this graph is the same base antenna data used for the Rectangular
Antenna Pattern graph. The angle and gain data in the rectangular pattern
is really polar coordinate data. We converted the polar coordinates into
rectangular coordinates centered around zero. Additionally, we used a
number of additional data files to provide the typical gain circles
and angle lines expected in a polar coordinate graph. The files of this
graph are:

    POLARANT.PL2 - The final graph that is viewable by loading into the
                   LinePlot program.

    POLARANT.DAT - The antenna pattern data in polar coordinates,
                   expressed in X-Y form.
    DIAG60.DAT   - The data file that contains the angle marking lines
                   for plus and minus 30 degrees from the horizontal
                   axis.
    DIAG30.DAT   - The data file for the angle marking lines that are
                   plus and minus 60 degrees from the horizontal axis.
    R10DB.DAT    - This is the data file which draws the line which
                   describes the -10dB data circle on the graph. This is
                   a series of points in rectangular coordinates that
                   describe a circle.
    R20DB.DAT    - The data file for the 0dB gain circle of the graph.
    R30DB.DAT    - The data file for the +10dB gain circle of the graph.
    R40DB.DAT    - The data file for the +20dB gain circle of the graph.


Readership Trends
-------------------------------

    This graph illustrates the use of multiple vertical axes, with the
left axis indicating the absolute readership, while the right axis shows
the percentage change in readership from the previous data point.
The left axis is formatted with the special formatting feature of
automatically inserting the "K" character and dividing the actual
value by 1,000. This graph makes use of a separate data file to mark the
0% change point on the right vertical axis. The files for this graph
are:

    COOAN.PL2    - The final graph file that is viewable by loading into
                   LinePlot.

    COOAN1.DAT   - This is the data file that contains the raw readship
                   numbers.
    COOAN2.DAT   - This data file contains the calculated percent change
                   in readership from the previous data point.
    COOAZERO.DAT - Data file to mark th 0% change point on the right
                   vertical axis.


Monthly Gas Bills
-----------------

    This graph shows an analysis of utility bills, for natural gas, over
a 5 year period. The graph illustrates the use of LinePlot's error bar
capabilities. The graph actually has two different error bars, that are
generated in slightly different manners. The standard deviation error
bar is relative, plus and minus, to the data points. The min-max error
bar on the other hand uses the absolute values of the minimums and
maximums to set the error bar position.

    Other LinePlot capabilities illustrated here are that the horizontal
axis has had its labeling turned off, and alternate alphabetic labels
applied through the program's annotation capability. The vertical
axis is using the new, special formatting available for axes that
will automatically insert the local currency sign. Also, the outline
rectangle setting in the Primary graph attributes dialog has been turned
off, giving just the left and bottom axis lines to mark the extent of
the graph. The files for this graph are:

    GASBILLS.PL2 - The final graph that is viewable by loading into
                   LinePlot.

    GASMNMX.DAT  - This data file contains the data for the average
                   monthly bill, the minimum month bill over the 5 yr.
                   period, and the maximum month bill for the same 5 yr.
                   period.
    GASSDEV.DAT  - This data file contains the data for the average
                   monthly bill and the standard deviation for monthly
                   payments taken over a 5 yr. period.

Probability Axis
----------------

     This is a graph without any data, intended to illustrate probability
axis types that are available with LinePlot. All probability axes are
based on a normal distribution curve. The horizontal axis is the full
curve, while the left and right axes are the normal curve skewed to a
discrete starting point and going up and down in probability values
respectively. An annotation on the chart points out that probability axes,
like all LinePlot axes, are invertable, meaning you can 'flip' their
directions as desired.

    PROB_01.PL2  - The graph file that is viewable by loading into
                   LinePlot.


Super-script & Sub-script examples
----------------------------------

     This is also a graph without data, intended to show techniques that
can be used to create super scripted and sub-scripted text using LinePlot's
annotation capability. This technique works with annotations and the
horizontal axis label. The basic technique that we've used here is to
leave sufficient space characters to permit the insertion of the sub-script
or super-script as an annotation. In this sample, we have adjusted the
height of the sub or super-script text to be 75% of the main text height.

     Not that this technique can also be used to insert special characters,
for example, Greek letters, that are not available in the standard font
sets.

     We plan to make annotations rotatable in the future, so that this
technique would also be available for special labeling on the vertical
axes.

   SSEXAMPS.PL2  - The graph file that is viewable by loading into
                   LinePlot.



Text file revised for LinePlot for Windows, release 1.0: 12/7/98



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