This episode features Graph It, originally released in 1980 by Atari.
Box and Supplement Scans
Scan of the front of the box:
Scan of the back of the box:
New Product announcement in Atari Connection March 1981 issue:
Ad from Analog May 1981 for software designed to solve the lack of printing and loading/saving of charts:
Graph It in Action
Boots to BASIC. Use CLOAD to load the desired plotting program from cassette or run it from disk if it has been converted. There is no menu for choosing.
Bar Charts and Pie Graphs
Give the chart a title:
Define the number of factors:
Enter the column labels:
Enter the values for each factor:
See the result. Chart using 1 factor (episode size in MB):
Exiting the chart:
See the result. Chart using 2 factors (episode len in minutes and seconds):
Entering the graph title:
Setting the Pie slice labels:
Setting the Pie slice values:
Setting the graph sub title:
See the result. Graph for categorized episode lengths:
Exiting the graph:
Two Dimensional Plots
Plot splash banner:
Define the number of functions for the plot:
Enter the function(s) for the plot:
Choose the plot speed (plot resolution – faster is lower resolution):
Enter the limits for the function variables:
Specify auto scaling (in case it may plot beyond screen range):
Seeing the result:
Returning to graph (Do Not Exit):
Using the joystick to find values along the plot:
The polar plot splash screen:
Entering the X function:
Entering the Y function:
Entering the Theta values and increment:
Choosing to auto scale or not:
See the result. Simple circle plot:
Using the joystick to find values along the plot lines:
Polar flower plot using Graph It (plot time = 2 minutes). Function definition, parameter values, and result:
X=COS(1.5*T) * COS(T) and Y=COS(1.5*T)*SIN(T), with theta values of 0 to 13 in .1 increments.
Same polar flower plotted using a Casio fx-9750G Plus (plot time = 20 seconds):
Same polar flower plotted using web based FooPlot (plot time = instantaneous):
Three Dimensional Plots
The three dimensional plot splash screen:
Defining the function:
Choosing the plot speed (plot resolution: fast is low resolution):
Defining the X values:
Defining the Y values:
Choosing to auto scale or not:
Defining the Z value limits:
Options to remove hidden plot lines and turning the display off during plot (roughly 30% increase in speed):
Same plot using FAST option (lower resolution, fewer plotted points):
Replotting and not removing hidden lines:
Normally there are no files since the program ships on cassette. Graph It, when converted to disk, uses Atari DOS 2.0. The contents of the disk can be seen in this screenshot:
The files are:
- CHARTPIE.BAS is Bar and Pie Chart program.
- POLAR.BAS is the Polar plot program.
- XY.BAS is the 2D plotting program.
- XYZ.BAS is the 3D plotting program.
There is no provision for printing.
You can find the manual in multiple locations on the internet. Check the AtariMania site as one example.
- Atari Mania: http://www.atarimania.com/utility-atari-400-800-xl-xe-graph-it_26990.html
- AtariWiki: https://atariwiki.org/wiki/Wiki.jsp?page=Atari%20Graph%20It
- Foo Plot: http://www.fooplot.com/
- Foo Plot (Polar Flower): http://fooplot.com/plot/q2qepy971e