OPLObjectFile**
LOC::O:\GRAPH.OPLAO
FLAG%
RANGE
FUNC1$
FUNC2$
FUNC3$
ARRAY
PROCG
GOSUBX
sin(Q)
cos(Q)
sin(Q)*sin(Q*4)
OnOFO
OnOFO
LRFSCXIOEDNZPVKT
Graphs+
RangesOR+	FunctionsOF+
ShowOS+
ClearOC+
InfoOI
Points+
Plot PointsOO+
Edit PointsOE+
Translate PointsOT+
Polynomial Graph FitOP+
Linear Graph FitOL+
Evaluate F(Q)OV
Maths+
Runge-KuttaOK+
Newton RaphsonON+
Sims EquationsOZ+
DeterminantsOD
Special+
ExitOX
gosub
gosub
Translate Points
SOURCE Data File:O
TARGET Data File:O
 F(Q,Y) =
 G(Q,Y) =
Translating PointsO
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COMPUTE
FUNC1$
RANGE
FUNC2$
FUNC3$
Runge-Kutta
Use formula from graph:+
One,Two,Three,Other
Runge-Kutta
Initial Q (X) :*/
B}Tj*/
Final Q (X) :
Initial Y :*/
B}Tj*/
Number Of Steps :O
dY/dQ (Q,Y) :
Create File Of Data Points :+
Yes,No
Select Filename
+"Existing files will be overwrittenO
Data Points File :O
Doing Runge-KuttaO
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Runge-Kutta
Final Q (X) :
+	Final Y :
Data Points In FileO
Error: took dy/dq=0O
FUNC1$
FUNC2$
FUNC3$
Linear Graph Fit
Date Name:O
Type Of Fit:+
Unweighted,Weighted
Graph Fitting...O
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Analysing Fit...O
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Unweighted Linear Graph Fit (
 Points)K
Weighted Linear Graph Fit (
 Points)K
Y = M*Q + CO
Gradient M=
Standard error(M)=
Y-Intercept C=
Standard error(C)=
Correlation Coeff=
Unweighted Linear Graph Fit (
 Points)K
Weighted Linear Graph Fit (
 Points)K
Y = M*Q + CO
R.M.S. Deviation=
Q-Intercept =
Standard error =
No Q-InterceptO
X-bar=
Y-bar=
Linear Graph Fit
+"Do you wish to plot this function:+
Yes,No
Graph Number:+
One,Two,Three
Linear Graph Fit
+"Fitted linear graph now programmedO
into graph 
Linear Graph Fit
Linear Graph Fit Failed!
COMPUTE
FUNC3$
FUNC2$
FUNC1$
SIN(Q)
Evaluate F(Q)
Function From Graph:+
One,Two,Three,Other
B}Tj*/
Function (Other):
Evaluate F(Q)
F(Q)=
CancelO
ContinueO
SOLSIMS
ARRAY
FUNC1$
FUNC2$
FUNC3$
OZ4[ 
Polynomial Graph Fit
Data Name:O
Degree Of Fit:+
1,2,3,4,5,6,7,8
Graph Fitting (
VOd|RO
Solving Sims...O
O	4[ 
*Q**K
|ZRJO
|ZRJO
|ZRJO
|ZRJO
|ZRJO
|ZRJO	
|ZRJ+
Polynomial Graph Fit (degree 
Determinant is 
R.M.S. Fit=
 Data PointsKO
Polynomial Graph Fit (degree 
Coefficient C
Polynomial Graph Fit (degree 
Polynomial Graph Fit (degree 
+"Do you wish to plot this function:+
Yes,No
Graph Number:+
One,Two,Three
Polynomial Graph Fit (degree 
+ Fitted polynomial now programmedO
into graph 
Polynomial Graph Fit (degree 
+$Too big a polynomial to attempt plot
Polynomial Graph Fit
+!Not enough data to fit this graph
COMPUTE
FUNC1$
FUNC2$
FUNC3$
Newton-Raphson Iteration
Use formula from graph:+
One,Two,Three,Other
Newton-Raphson Iteration
F(Q)=
Q starting value:*/
B}Tj*/
Newton Raphson IterationW2LO
Newton Raphson Iteration
F(Q) 
Newton Raphson Iteration
Derivative uncalculable atO
SOLSIMS
ARRAY
OZ4[ 
Determinants Solver
Matrix width/height:+
2,3,4,5,6,7,8,9
Determinants - Row 
Column 
B}Tj*/
Determinants - Row 
Column 
B}Tj*/
Finding Determinant...O
Determinants Solver
Determinant is 
SOLSIMS
ARRAY
OZ4[ 
Simultaneous Equations
Number Unknowns:+
2,3,4,5,6,7,8,9
H4\[G
B}Tj*/
B}Tj*/
Solving Sims...O
Sims Solutions
Sims Solutions
Sims Solutions
Determinant=
Sims Solutions
No one solution
ARRAY
PROCG
RANGE
Plot Points
Data Name:O
Plot Points
Graph Number:+
One,Two,Three
Range Setting:+
Auto,Current
Plot Function Too:+
No,Yes
Plot Y Error:+
No,Yes
Include (0,0) on axis?O
YesOY+
W7Oy@
ERRY"
ERRY"
ERRY"
ERRY"
ERRY"
ERRY"
@Q@RN
ERRY"
@Q@RWBMx
ERRY"
@Q@RWBQIx
Edit Points
Data Name:O
Edit Points
+%Do you wish to change current points?
YesOY+
W7Oy@[u
YERR"
Edit Points
Data Point: 
Q (or X) Coord:*a
Y Coord:*a
Err in Y Coord:O
Delete Point:+
No,Yes
YERR&
YERR"
Err in Y Coord taken as 1O
YERR&
Edit Points - Add Point 
Q (or X) Coord:*a
Y Coord:*a
Err in Y Coord:O
CancelO
AcceptO
YERR&
YERR"
Err in Y Coord taken as 1O
YERR&
RANGE
FUNC1$
FUNC2$
FUNC3$
Graph 0 InformationW2LO
Graph 
 InformationK
<= Q <=KO
<= Y <=KO
F(Q)=
PROCG
Clear & Replot
Graph Number:+
One,Two,Three,(ALL)
Which Graph?O
PROCG
FUNC1$
FUNC2$
FUNC3$
+	Functions
Graph Number:+
One,Two,Three
F(Q)=
Function Not Changed
PROCG
RANGE
Ranges
Graph Number:+
One,Two,Three
Ranges (Graph 
Minimum Q:*a
Maximum Q:*a
Minimum Y:*a
Maximum Y:*a
Invalid Ranges - Not Set
FLAG%
Are you sure?O
YesOY+
RANGE
@Q@RN
Plotting Graph 
Om4`[
Escape
Do you wish to abort plottingO
graph 
YesOY+
W7Oy@[
Plotting Graph 
RANGE
FUNC3$
FUNC2$
FUNC1$
Function Undefined
At Q=
Enter Y value:*a
@Q@RN
@Q@RN
Help: Graph(
Graphs(
Points(
Maths(
Info(
Help: Graphs(
Ranges(
+	Functions(
Show(
Clear(
Info(
Help: Ranges(
+$A graph plotting program which won't
+#let you change the range you view a
+#graph over would be pretty useless.
+"This graph plotting program isn't.
+$When you change a graph's range, the
+#most recent function is re-plotted.
Help: Functions(
+!Functions to be plotted/evaluated
+"should be entered in computer type
+#algebra, with Q (not X) as ordinate
+ variable. Consult the Psion user
+ manual for the EVAL/Calc format.
Help: Show(
+%GRAPH has three graph plotting areas.
+&These are numbered 1 to 3. Use SHOW to
select a graph to view.
Help: Clear(
+"If you wish to clear one or all of
+#the graph plotting areas, then this
+!is the menu option to select. The
+!graph(s) will be cleared, and the
+!last function will be re-plotted.
Help: Info(
+$Selecting this menu option will show
+$you the current ranges and functions
+#on each of the three graph plotting
+$areas. If a function is too complex,
+#it will not fit on the Info window.
Help: Points(
Plot Points(
Edit Points(
Translate Points(
Polynomial Graph Fit(
Linear Graph Fit(
Evaluate F(Q)(
Help: Plot Points(
+%One of the most interesting things to
+#be done with data points is to plot
+$them. To satisfy the natural urge in
+"us all to plot data points, select
this option.
Help: Edit Points(
+$It is often useful to be able to put
+#your own data into a graph plotting
+#program. I wouldn't want to deprive
+%you, so use this option to edit/enter
data points.
Help: Translate Points(
+$When you have created a file of data
+&points, you way wish to translate them
+%to a new set. eg: translate all the Y
+'coordinates to Y**2 or SIN(Y). Use this
option to do so.
Help: Polynomial Graph Fit(
+#You can fit polynomials of the form
Y = C0 + C1*Q + C2*Q**2 ...
+$Fitted polynomials of up to degree 5
+"can be plotted, either with or not
+"with the data points which the fit
was calculated from.
Help: Linear Graph Fit(
+#A linear graph fit is just a degree
+%one polynomial fit. You get, however,
+!more statistical analysis on this
+"menu selection. Note that for this
+#as for polynomial fitting, you need
+&to have created a file of data points.
Help: Evaluate F(Q)(
+$To make life easy, you can find F(Q)
+&for one of the three graphed functions
+#or for a different function entered
by you.
Help: Maths(
Runge-Kutta(
Newton Raphson(
Sims Equations(
Determinants(
Help: Runge-Kutta(
+%A cunning way to integrate a function
+"over a specified range (in Q). The
function to be integrated is a
function of Q (X) and Y.
Help: Newton Raphson(
+$Use this to solve F(Q)=0, where F(Q)
+"comes from one of the three graphs
or is entered specifically.
Help: Sims Equations(
+$You know the score; you want to know
+#what the prices of bits of food are
+#from deviously constructed shopping
lists. Look no further!
Help: Determinants(
+"Gives the determinant of up to 9x9
+"matricies. Sims Eqs also gives the
`determinant' of the matrix.
Help: Info(
Graph : Version 1.9O
 G Essex-Lopresti 1993O
+&This program may be freely copied, butO
+&I accept no blame for any way in whichO
+#it affects your standard of living.O
START2
GOSUBT
GOSUBK
DYDXp
GOSUBLt
GOSUBV>
GOSUBP
GOSUBNb
COMPUTE
GOSUBD
GOSUBZ
SOLSIMST%
GOSUBO
GOSUBE
GOSUBIG2
GOSUBC
GOSUBS
GOSUBF75
GOSUBR/6
GOSUBX(8
AXIS{8
PROCG
PLOT,;