Home of the original IBM PC emulator for browsers.

[PCjs Machine "ibm5170"]

Waiting for machine "ibm5170" to load....

```
T h e P C - S I G L i b r a r y o n C D - R O M
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
This may well be the greatest collection of software ever compiled.
The PC-SIG Library on CD-ROM is our premier collection of the entire
PC-SIG library. It has over 2500 different, and complete applications
for your every need. Every shareware program we have is on one disc;
over 700 megabytes of software you can have immediate access to.
Easy to use, all you have to do is insert the disc and type 'GO' at the
DOS prompt. We've included all the tools you need for fast easy access
to the programs and their descriptions.
The WordCruncher text retrieval software allows you to quickly access
the description for any program you want. All the programs are indexed
by title, filename, PC-SIG disk number, and every word within the
program description. There couldn't be an easier way to find just the
right program.
The Narc utility, newly instituted with the tenth edition, allows you to
look directly at all the compressed program files on the CD without
having to download the program to your hard disk. So if you want to
look at the programmer's notes or on-line documentation before using
valuable hard disk space, you can.
The PC-SIG Encyclopedia of Shareware is included on the disk, and a
printed copy of the book is included so you can peruse the available
programs from the comfort of your favorite chair. All the programs are
logically divided into one-hundred twenty categories making it easier to
find just the right software.
Whether you're interested in Accounting or Windows, there's a shareware
program for you on the PC-SIG Library on CD-ROM.
Winner of the Optical Publishing Assn's Best Consumer Product Award.
Shareware for every imaginable need: Accounting Chemistry Educational
Engineering Games Hypertext Networks Programming Spreadsheets Utilities
Word Processing
System Requirements:
IBM PC/XT/AT PS/2 or compatible with 384K memory DOS 3.1 or higher and
Microsoft MS-DOS CD ROM extensions.
T h e E s s e n t i a l H o m e & B u s i n e s s C o l l e c t i o n
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
"Never before has such a valuable collection of popular shareware been
compiled on one CD-ROM that everyone can afford." Dr. File Finder a.k.a.
Michael Callahan
Finally, 368 of the most useful, popular, important shareware programs
have been put together on one CD. No matter what your need, it's on The
Essential Home & Business Collection. Everything from Administration to
Windows software is here.
The Essential CD incorporates the WordCruncher text retrieval system.
Every program on the disc is indexed
by title, filename, PC-SIG disk number, and every word in the program
description. A new utility, Narc, is implemented so you can look at the
program files and the author's on-line documentation without having to
first copy the program to your hard disk. By using WordCruncher and
Narc, you can quickly find the program you want and review it to be
sure, without ever having to run it from your hard disk.
If you've got a CD-ROM player at home and want to get more use of it and
your computer, or if you're trying to avoid purchasing another Nintendo
cartridge, or if you just enjoy looking at new software, you need The
Essential Home & Business Collection.
System Requirements:
IBM PC/XT/AT PS/2 or compatible with 384K memory DOS 3.1 or higher and
Microsoft MS-DOS CD ROM extensions.
To Order in the U.S.A.: Call 800-245-6717 and ask for Customer Service.
Outside the U.S.A. call (408) 730-9291 for the name of the dealer in
your country.
```

```
Control Charts Made EASY!
Copyright (c) 1989 Mark H. Libert
All Rights Reserved
Control Charts Made EASY! is an interactive BASIC program designed
to let your IBM or compatable computer take the place of a hand calculator
when making common calculations from control charts. Control charts are
used for statistical process control throughout the manufacturing industry.
Many companies handle SPC data electronically from measurement to computer
generated charts. Others use partially computerized systems, or they
perform SPC manually. Unless a system is 100% computerized and no
calculations are made by the operator or inspector, Control Charts Made EASY!
will simplify the use of the control chart. The chance for operator error
is eliminated when the computer calculates a complex formula typical to
statistics.
Control Charts Made EASY! will calculate control limits for the
following charts:
_
x & R Average and range
median charts
x & s Average and standard deviation
individuals and moving range
p charts
c charts
np charts
u charts
It will also calculate Cpk, CP, and CR for the variable data charts.
It will calculate Cpk from mean and standard deviation, and calculate
P-C line values for pre-control / stoplight control charts. Control Charts
Made EASY! is simple to use, and has many features to check for errors in
data entry or incorrect use of a chart. USE THE HELP FEATURE OFTEN when
operating the program. There are fifteen different screens of help and
information to assist with operation and describe the uses of each chart
type.
Using Control Charts Made EASY! is not difficult and each chart
section operates in a similar fashion. Prompts for part number and check-
point number begin each section. Entering a number or name in these places
will cause them to be displayed with the calculated results. If you do not
wish to enter anything in these places, simply strike the ENTER key when
prompted. You will then be prompted to enter other information needed to
calculate control limits for SPC charts such as subgroup size, number of
subgroups, lot sample size etc. Once these things have been entered, the
entering of data can begin. Prompts on the screen always help you to know
what to do next. Once the data has been entered, control limits will be
displayed instantly if you choose; or enter specification limits to also
calculate and display Cpk, CP, and CR. At almost any point of the program,
the <E> key will help you back up or get out. An E to Exit sign at
the bottom of the screen appears most of the time. When it does not, the
<E> key might still help out. Here's how. When entering data, mistakes can
be made. That's normal. If you look at the screen and see you have made
an error, enter an E in place of any next data. At that point, you have
entered the error recovery route. You can then choose to go back to any
point and resume. Control Charts Made EASY! does not make charts, but
will make all the calculations needed for making SPC charts. If a hand
calculator is ever used for control chart calculations, Faster, easier,
more dependable results can be obtained by using the computer.
Control Charts Made EASY! is protected under the copyright laws and
registered with the Library of Congress. It is prohibited to edit Control
Charts Made EASY! or distribute it for profit. You are, however, encouraged
to distribute it freely to anyone who might benefit from its use.
Libert Computer Systems 2655 Fox Rd. Greenville, OH 45331 1989
```

```
EGRAPH.EXE---Graphing program.
PICPRN.EXE---Utility for printing PIC files on Epson FX-LQ & HP-LaserJets at
high resolution.
MSHERC.COM---Required for Hercules graphics.
CONTOUR.EXE--Creates Contour & 3D-Surface plot file for EGraph from randomly
spaced X,Y values and associated Z values.
FILES.TXT----This file.
README-------Order form for additional copies of EGraph and manual for $29.
EXAMPLE.DAT--General data file format example for multi-variables.
Disk2:
PRNWHAT.EXE--Reads files and extracts selected lines or columns by scrolling
through file. Sequential data on rows can be extracted and
stacked for importing into Lotus 123 or EGraph or sent to
a printer.
NOTABS.EXE---Reads ascii files and creates a new file with Tabs expaned to
8 spaces. The number of characters you see is what you get!
EXAMPLE?.DAT-EGraph data file examples. Example1.dat has 1 Y range, Example2
has 1X & 2Y's or is a CONTOUR data file, and Example3 has 12 Y
ranges. 4 is a digitized data file and 5 is Hi/Lo/Close.
*7.EXE-------Smaller Faster versions but require '87 math chip.
No installation. Each EXE file is stand alone. See README file.
```

```
E G r a p h
Engineering Graphics
E G r a p h
By
Great Basin Associates
653 Avenue M
Boulder City, NV 89005
702-293-5908
(c) 1991
All Rights Reserved
LIST OF EGraph FEATURES
EQUIPMENT:
IBM-PC, CGA, EGA, VGA, MCGA, or Hercules Card, 256K, DOS 2.1+,
Single disk drive
OUTPUT:
Printers--Epson FX-LQ, HP LaserJet, HP Plotter(or HPLJ-III)
Files--Lotus PIC file, HP LaserJet file, HPGL plotter file
GRAPH TYPES:
Line, XY, Needle, Bar, Contour, 3-D Surface, HiLoClose, Triangle,
Polar, Pie
GRAPH SCALES:
Linear, Log, Probability, Time Series, Vector
MAIN FUNCTIONS:
1)--EDIT:
Enter or edit, swap & copy, insert & delete, fill & clear
X values not required for time series
Choose Y2 values as labels, Sort data on X
Math:*/+-^,LN,LOG,EXP,MOD,SIN,COS,ATN,ABS,INT,FIX,RND,INC
2)--FILE:
32,000 x,y pairs, ASCII Columnar, Lotus WK1, SHELL to DOS,
save or read graph setups
3)--PLOT:
Set titles, graph types, scales, print...
4)--TIME:
General-give starting X value and interval between Y values
Hourly 0:00, Daily, Monthly, Yearly
5)--STATS:
Sample size, Mean, Median, Min & Max, Variance, Std.
Deviation, Std. Error of Mean, Skewness, Kurtosis, Area & C.
Other Distributions: Frequency Histogram, Cumulative %,
Mass, Double Mass, Moving Average, Spline, Regression:
Y=a+bX, Y=a+bX+cX^2, Y=a+bLogX, LogY=a+bX, Y=aX^b,
Y=a(X+e)^b, Plot regression or errors, Probability: Compute
probability of Y values or user probability as X; add
Pearson III or Log-Pearson III (normal & log normal)
Interpolation & Extrapolation: linear, log, probability
MANUAL SCALING OPTIONS:
Suppress X scale labels (user may interactively add)
Second Y axis
Set X & Y graphing range
Reverse Y scale
Set Y2 line color and marker type
14 colors, 14 marker types, or user text as markers
Set # of blank rows to begin new Y2 line and marker type
Set restart of Y2 time series values on X scale
Turn Y markers off and line on after blank value
INTERACTIVE SCREEN EDITING:
Add markers, lines, curves and text
Display cursor coordinates
Change editing color, line & marker type
UTILITY PROGRAMS:
CONTOUR.exe--generates contour & surface data file for EGraph
using randomly spaced X-Y values and associated Z value.
PICPRN.EXE--Prints hires PIC files on Epson & HP LaserJet.
PRNWHAT.exe--Extracts data from columnar ASCII files.
Sequential data on rows may be stacked into columns
NOTABS.exe--Replaces tabs in ASCII files with 8 spaces for
proper reading by EGraph.
E G r a p h
ENGINEERING GRAPHICS
Copyright (c)1987-91
by
Great Basin Associates
653 Ave M
Boulder City, NV 89005
EGraph is a technical graphics program for the IBM-PC with a
CGA, EGA, VGA color or mono, MCGA, or Hercules card. LINEAR,
LOG, PROBABILITY, and TIME SERIES axis scaling may be mixed.
Over 32,000 x,y data pairs may be graphed. Descriptive
Statistics, Histogram, Cumulative, Frequency, Mass, Moving Avg
Distributions, Polar, Pie, Bar, HiLoClose, Triangular Percent,
Regression, Pearson III, Splines, and Contours can be added. Text
lines, curves, and points can be interactively placed on graph.
Data can be read directly from Lotus worksheet files, PRN,
columnar ASCII files or keyboard. Graphs may be printed directly
on an Epson, HP LaserJet, HP Plotter, or saved as a Lotus PIC
file. High resolution graphs can be printed or plotted using all
the printers and plotters supported by Lotus 123 or Symphony.
The PIC file can also be imported into other programs such as
Freelance, Word Perfect, Word and desktop publishers for editing
and printing.
It is menu driven with pulldown & pushbutton selection. After
reading the command line and data format sections below, users
may not need to read the rest of this manual before starting.
Single drive users may replace the EGraph disk with a data disk.
EGraph COMMAND LINE:
Options can be set when starting EGraph by including values for
setting screen foreground and background colors or auto selection
of graphics adapter or data file. The command line format is:
EGRAPH,a,b,c or EGRAPH filename (command line format)
The default values used when only EGraph is entered from the DOS
prompt is:
a= 1 color blue foreground
b= 7 color white background
c= 0 auto selection of graphics adapter, 1 for manual
For example, EGraph,4,7 would set red on white screen colors
with auto select type of graphics adapter. Color numbers are:
0-Black, 1-Blue, 2-Green, 3-Light Blue, 4-Red, 5-Violet, 6-Brown,
7-White: Add 8 to these values for brighter foreground color.
1
EGraph MENU OPTIONS
FILE:
Input data files can be created from any program that creates
ASCII files or from Lotus Worksheet files (WKS, WK1). Most word
processor programs can create ASCII files but usually is not the
format in which they normally save files. Each line of data is
terminated by the carriage return (ascii 13) and linefeed (ascii
10) sequence. These terminate each row of data but will not be
displayed when using the TYPE filename DOS command. TAB's(ascii
9) are read as 1 character and not expanded into 8 spaces as
displayed using the TYPE command. You can check for TAB's using
the DOS command COPY /B filename CON. This displays the file in
binary format on the screen and TAB's show up as little circles.
This should be kept in mind when telling EGraph where data
columns are located. The included utility program NOTABS will
read a file and replace the tabs with 8 spaces. To use NOTABS
type NOTABS infilename outfilename.
Below are data files in EGraph's default data locations of 9
characters wide starting in column 1. If your data is not in
this format or data is row wise sequential then answer "Y" to the
Change Default width, starting column, and # of variables/row. A
data file can have as many title lines as desired. EGraph will
detect the beginning of data when the line contains only numbers.
Lotus 123 users can create columnar ASCII files by using / Print
File Range Options Margins Left 1 or 0 Other Unformatted.
EGraph DATA FILES
Example of 1 Y variable data file
Title lines are ok.
Y1 'Y1 is not required and is used for clarity here
12.1
10122 'Y data without an X is useful for time series data
9.999 'or probability and cumulative distribution
1.23E-6 'scientific notation ok!
Example of 1 X and 1 Y variable data file
X1 Y1
.99 2222
.999 589
.9999 -98.4 'X values may be user computed probabilities
2
Example of 2 Y variable data file
Y1 Y2
3.03333 4343.34
1.0E-38 1.0E+38 'values from +- 10 to the 38th power.
2322 1231 'range limit of 1E+38
Example of 1 X and 2 Y variable data file
X1 Y1 Y2
-233 444 3.222
1234567 2.098456-12.34567 'up to 7 significant figures
123456789 44.3 9.982 more are rounded: 1.2345679E+08
Example of 2 X and 2 Y variable data file
X1 Y1 X2 Y2
obs close hi lo ''or Hi/Lo/Close
1 33.125 35 30
2 23 33 22.5
3 23.5 26 22
Example of 7 X,Y sub variables
X1 Y1
1 1
2 2
'a blank or letters in Y1 or Y2 will cause
1 2 a start of a new line to be drawn. This is
2 3 useful for displaying more than 2 lines.
Digitized lines can be graphed as was done
1 3 for the map of western U.S states example.
2 4 Confidence limits may be read in as X2,Y2
values with a blank line to separate upper
3 -6 and lower limits. Several confidence levels
22 13 can be added in this manner. Each line for
.1 -9 Y2 values will be graphed in a different
color or dash style when a blank Y2 value is
5 8 encountered. This allows more than 2
6 9 variables to be graphed with different line
styles (see EXAMPLE3.DAT file). # of blank
7 7 blank values before new line can be set
9 4
12 12
15 5
The included utility program PRNWHAT can be used to read your
original data file and extract data into columns for EGraph if
your data file is not in the above form.
Lotus worksheet files (.WKS or .WK1) may be read by simply
entering the entire worksheet filename with the .WK1 extension
and EGraph will know to read the file as a Lotus or Symphony
worksheet file. You will be prompted to select a X1, Y1, X2, or
Y2 variable and the worksheet range to be read into it. For
3
example, to read the first 20 values in column A, you would enter
"A1..A20" as the start and end of the data range to read into the
variable. To read rowwise use "A1..L10" to read row A1..L1, A2..
L2, etc. Several data ranges in the worksheet can be repeatedly
selected for entry into one of EGraph's variables in order to
graph several data ranges. When you save your Lotus worksheet,
you must remember what ranges your data to be graphed is in.
File names may use DOS wildcard characters * and ? to help locate
files. B:*.dat, Test?.*, \data\project1\cost*.* are legal file
names. The files matching the filename mask will be displayed
and you may then select your filename choice for data reading.
Select FILE, sHell for temporary exit to DOS. Type EXIT to
return to EGraph from DOS. The file COMMAND.COM that comes with
DOS must be in your boot drive.
EDIT:
Data can be entered or edited from the keyboard and saved for
rereading. A blank cell for Y1 or Y2 values will start the
beginning of a new line to be drawn so that 100's of line
segments or variables can be graphed. Data entry is terminated
by hitting the Escape key. If Y2 values are entered, you may
select to either graph them or use them as labels for Y1 values.
Editing keys are:
Escape....Exit editor
Space.....Delete cell contents
Insert....Insert cell in data column
Ctrl-Y....Remove cell in data column
Delete....Delete character
Enter.....Enter displayed value and move down 1 cell
Arrow.....Move left, right, down, or up 1 cell
PageUpDn..Move 1 page
Home......Move to top of column
End.......Move to end of column
F1........Swap X1-Y1 with X2-Y2
F2........Copy pointer X-Y to other X-Y
F3........Swap pointer X with Y
F4........Copy X1 to X2
F5........Undo edit
+.........Begin Math: +x<operator>y [;N]
Select EDIT, Fill to fill a data column using start-step-stop.
Use fill X2 to supply values for interpolation under STATS. For
MATH use the editor Alt*H help screen for examples.
PLOT: Graph Titles, Axis Labels, and Scaling:
After the data values are edited, select PLOT, Titles, Graph type
or Scaling for desired settings. Press escape from within one
sub-menus to exit back to the main menu line: Select PLOT, Plot
to view and edit graph. Press Alt*H for help in graph editing.
Once your graph is setup, you may save the current settings and
4
and titles to file for future use (FILE, sAve setup). The setup
files may be edited outside EGraph for easy updating.
Select PLOT, Manual scaling for setting of the X and Y axis scale
range. The Y axis may be inverted to graph such things as depth
using positive values. Display of the X axis values may be sup-
pressed so that you may add your own labels. A second Y axis for
Y2 values may be added. Time series plots with blank rows in
the Y2 column may be reset to start of the time scale for graph-
ing several variables using a time series X axis. Select PLOT,
Auto scaling to reset EGraph's default settings.
Select PLOT, Plot to view and edit the graph. Use the arrow keys
to add text, symbols, straight lines or curved lines. You may
also get the cursor coordinates. The cursor is moved using the
arrow keys or Left Shift*Arrow keys together for small moves.
After moving to a location begin entering text and terminate with
the Enter key. The last line, symbol, or text type added can be
deleted with the Delete key. To switch type of editing to delete
enter that type anywhere on the screen and then proceed deleting
that type one at a time with the Delete key. When finished,
press the ESC key to exit.
Graphic editor keys are:
Escape...........End editing & return to main menu
Arrow............Move cursor left, right, up, down 8 pixels
LeftShift-Arrow..Move cursor 1 pixel
Enter or arrow...Enter text string being added
F1...............Add a marker
F2...............Start and end a dashed line
F3...............Start and end a straight line
F4...............Mark 3 points on a curved line
F5...............Toggle display of cursor x and y coordinates
F6...............Increase editing color, line & marker type
F7...............Decrease color, line & marker type
Delete...........Delete last text, marker, or line type added
Alt-H............Help
Graph Printing and Lotus PIC Files:
After viewing & editing the graph, select PLOT, File to print the
graph. The EPSON option will print your graph as half, full, or
manually set size directly on an Epson compatible printer
installed on the LPT#1 port. Either Epson FX (9 pin) or LQ (24
pin) type compatible printer may be used. The HP-LaserJet is
also supported directly or sent to file. The LaserJet file can
be sent to a LaserJet later using Copy /b filename PRN.
The Lotus PIC file option creates a high resolution file that can
be graphed or plotted using Lotus' or Symphony's PGRAPH.EXE
program. When naming your graph file add the extension .PIC so
PGRAPH can locate it. The enclosed graph examples were plotted
5
using Lotus PGRAPH.EXE and an HP lasor printer. Other programs
like Freelance, Word Perfect 5, and desktop puplishers can import
the PIC file for editing and printing. Although not displayed
properly in EGraph the Lotus LICS extended character codes can be
used as text by holding down the ALT key & entering the code
number on the NUMBER PAD only.
Single floppy disk system users should remove the EGraph disk
after loading EGraph and replace with a data disk. The
EGraph distribution disk does not have enough disk space for
creating graph files. The HPGL plotter option requires disk
space for creating a temporary disk file before sending the
graph to a plotter.
STATS:
STATS, Stats:
Descriptive statistics for each of the variables can be displayed
and include Sample Size, Mean, Median, Min, Max, Variance,
Std. Deviation, Std. Error of Mean, Skew, and Kurtosis.
STATS, spLine:
A smooth curve can be fit to X1,Y1 points by computing X2,Y2
points between the X1,Y1 input data points. Examples of the use
of this spline fitting is for interpolating points between
rainfall depth-duration data or reservoir elevation-area-capacity
data. The X2,Y2 points are interpolated by weighting the
tangents of the lines connecting the X1,Y1 data input points to
create a smoother curve through the points. The number of
interpolated points between input points are user defined. The
number of computed points between the input values is limited to
16,000.
STATS, Interpolation:
Interpolation & extrapolation using linear, log, & probabilty
scaling to compute Y2 value from X1-Y1 lookup of X2 value. Enter
selected lookup points as X1-Y1 and use EDIT, Fill, X2 to provide
a range of values for interpolation.
STATS, Distributions:
A frequency histogram will show how many of the Y1 values are in
a class (interval or bin) displayed on the X axis. All Y1 plot
options should be set to N except Bar Graph. A normal frequency
curve will be fit to the Y1 values and can be turned off or on
using the Y2 plot settings. A better aid in checking to see if
your Y1 data is normally distributed is to use Probability with
the Pearson III option with 0 skew. Normally distributed data
will plot as a straight line on normal probability paper.
The cumulative percent distribution of Y1 and Y2 values may be
computed and graphed. The formula used to compute each Y values
X plotting percent value is 100*Rank/N for percent of values less
than or equal to and 100*(1-(Rank-1)/N) for percent of values
greater than or equal to. The X values in the original data will
be replaced with the cumulative percentage values. If the Spline
6
or Regression options are used after the cumulative percent then
the X values used will be percentages. The cumulative distribu-
tion is useful for viewing how your data is distributed. For
example, daily streamflow cumulative distribution may be viewed
to see what percent of the time flow is below a certain value.
Log X axis scaling or probabilty scaling may be used to expand
the lower percentage values. Y1 and Y2 cumulative distributions
can be graphed together for comparisons.
Mass curves are a cumulative sum of Y1 data usually with time.
Changes in slope of the mass curve can show a change in the
relation with time. A double mass curve is a cumulative sum of
both X1 and Y1 data to show changes in their relation. Sometimes
it is helpful using a double mass curve to use the average of
several variables as X1 values to limit variability. Regression
errors plotted as a residual mass curve can help magnify changes
in the variables relationship.
STATS, Regression:
A regression line can be added to either the X1,Y1 or X2,Y2 data.
The regression coefficients a and b, R squared, and standard
error of regression can be displayed on the graph. Selecting
regression does not alter the original X,Y values.
When using Log10 transforms of the Y values (options 3-5),
the R squared value is for untransformed values, not log values
and the standard error of regression is given in percent. X,Y
data must be greater than zero to compute Log10 transforms.
Y=a+b*X will be a straight line with linear axis scaling and
Y=aX^b will be a straight line with log axis scaling. An offset
value e may also be added for regression of Y=a(X+e)^b. This
is useful for data that is not linear on log-log paper. The
offset value "e" can be selected if an arbitrary base or datum
is known to have been added to the X range values.
Otherwise, for curved data sets, the "e" value can be
determined by trial and error and noting the R^2 and Standard
Error values. The point of zero flow for water discharge
ratings with arbitrary datums is an example of regression
of data requiring an X offset value.
Caution should be used in extending regressions outside the range
of data and near zero, especially option 2, Y=a+bX+cX^2. This is
a parabolic curve and can reverse direction.
The X1-Y1 regression residuals can be plotted as Y'-Y, predicted
Y minus data Y. Error plots that show a trend or pattern may
indicate the need for a different regression type or transform of
the original data.
STATS, Probability:
A normal probability graph or a log-normal probability graph of
the Y1 or Y2 values may be made by selecting either linear or Log
Y axis scaling. The non-exceedance probability X axis values
(plotting position) are computed by Rank/(N+1) and exceedance
7
values are computed by 1-Rank/(N+1). The X values in the
original data set are replaced with the probability values if
read. Spline or Regression used after Probability will be based
on probability X values. Probabilities for the X axis may also
be computed by the user and read in as X values so that other
plotting position formulas are possible. Upper and lower
confidence limits may be computed by the user and read in as
X2,Y2 values and separated with a blank line to start a new line.
Probability graphs are similar to Cumulative Distribution graphs
and can be used for similar purposes. Probability graphs can be
used to view what data lies within a given number of standard
deviations. Changes in the slope of the probability curve can
show mixed populations in the data. Normally distributed data
plots as a straight line on normal probability paper and log-
normally distributed data plots as a straight line on log-normal
graph paper.
The Pearson or Log-Pearson Type III distribution can be fit to
the Y data by computing the mean, standard deviation, and skew of
the Y data or Log10 transforms. The Pearson Type III deviate K
for a given probability is then computed based on the skew and
the Y for that probability is computed as Y=mean+std.dev.*K or
Log10(Y)=mean+std.dev.*K. The Pearson III distribution with zero
skew is the normal distribution. The Log-Pearson III
distribution with zero skew is the log-normal distribution. The
Pearson III option does not replace any of the original X,Y data.
The Log-Pearson Type III distribution is used extensively in low-
flow and flood frequency hydrologic analysis. A complete
frequency analysis program using the Log-Pearson Type III
distribution is available from Great Basin Associates. The
Pearson III distribution may fit the Y data better when high
negative skew is found by the Log-Pearson III (data more normally
distributed). Some annual series such as high 15-day runoff
volume may be more normally distributed and fit better with the
normal distribution.
TIME:
The Y1 and Y2 values may be graphed as an evenly spaced time
series. The X1 or X2 values are not needed and are changed if
read. The general time series can be used to graph any evenly
spaced data.
Contour & Surface Plots of X,Y,Z data:
The included utility program CONTOUR.EXE may be used to create
contour & surface plots with EGraph. CONTOUR reads random X,Y
*****MANUAL CUT SHORT DUE TO DISK SPACE*****
8
```

```
P C - S I G
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Welcome to the world of Shareware, state of the art software you can
actually try before you buy.
Shareware, a term coined in the early eighties, refers to the method of
distribution chosen by the software authors. With shareware, you can
receive a program and put it through its paces without having to pay for
it. If you find the program useful, and choose to keep the program, then
you pay a registration fee to the author. However, if the program does
not fit your needs, there is no obligation to send the registration fee.
It's that simple
For the last nine years, PC-SIG has been providing shareware and public
domain software to its customers and members. Since 1982 PC-SIG has
developed an unprecedented library of shareware programs, constantly
updated, consistently strong in every category. Our library of
shareware contains over 2700 titles divided into 120 logical categories.
Every program we add to the library is thoroughly reviewed and tested to
ensure that each one meets the high standards of reliability and value we
insist upon and you expect. As a result, our library doesn't contain
every shareware program available, just those that really work.
PC-SIG has grown into the premier distributor of shareware and and
shareware information by producing shareware collections on CD-ROM,
publishing an encyclopedia of shareware, and by publishing Shareware
Magazine, a bi-monthly magazine distributed world-wide.
Quality and support - guaranteed. All of our programs are guaranteed
virus free. We've isolated our systems and checked every program
submitted to ensure that no viruses make their way to your computer or
ours.
Our support staff is available by phone as well as on our BBS to help
you with questions about installation and operation of PC-SIG's
products.
Through our network of international distributors, PC- SIG strives to
bring you the most current, exciting, technically advanced software
available as shareware.
If you can't find the software you need in PC-SIG's library, it may well
not exist.
To order the latest in Shareware, in the U.S.A: Call (800) 245-6717
Outside the U.S.A. call (408) 730-9291 for the name of the dealer in
your country.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
```

```
S H A R E W A R E M A G A Z I N E
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Shareware Magazine has distinguished itself as the only internationally
distributed periodical devoted to the use and business of shareware.
Shareware Magazine provides detailed reviews of new products,
hard-hitting comparisons of shareware programs with regular retail
software, and timely information about changes in the industry and the
latest technology.
Intriguing columnists and regular features add to the excitement. The
beginners section sheds light on new user's concerns regarding
everything from choosing the right operating system to alleviating the
intimidation of using on-line systems.
Educational sections focus on how low cost shareware can aid in
classroom learning, curriculum development, and as a forum for
discussing the impact of computers and technology in schools.
Graphics Gallery renders expert advice and suggestions on how to better
work with graphics, desktop publishing, CAD systems, and the Windows
environment.
Programmers benefit from others experience in developing new programs or
polishing existing ones as well as choosing the right programming
language.
And columnists provide that subjective component, sometimes
controversial, that calls for a closer look at the way we compute and
how shareware affects what we do.
Published bimonthly, Shareware Magazine is available on a subscription
or at your local newsstand or computer bookstore. In conjunction with
PC-SIG, there are special benefits for subscribers as well as
opportunities for discount purchases from PC-SIG.
To Order, in the U.S.A.: Call 800-245-6717 and ask Customer Service.
Outside the U.S.A. call (408) 730-9291 for the name of the dealer in
your country.
```

```
Volume in drive A has no label
Directory of A:\
EGRAPH ZIP 208478 12-04-91 3:05a
GO EXE 26022 1-10-92 12:14p
PCSIG TXT 2451 1-22-92 9:19a
CDROM TXT 3769 1-22-92 9:21a
SHAREMAG TXT 1837 1-22-92 9:15a
GO-FORM DAT 2401 1-20-92 10:24a
GO-STRT DAT 540 12-04-91 5:50a
PKUNZIP EXE 23536 1-16-91 12:38p
CHARTS ZIP 79959 12-04-91 5:43a
9 file(s) 348993 bytes
9216 bytes free
```