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MATHPLOT.HLP
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1991-12-07
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---- Defining Functions to be Plotted ----
Cartesian:
Yn = f(X) Where 'n' is in the range 1 to 4 (default is 1).
Cartesian parametric:
Yn = f(T)
Xn = f(T)
Polar:
Rn = f(A) Radius as a function of angle. 'n' is in the range 1 to 4.
Polar parametric:
Rn = f(T) Define radius for function 'n' (1 to 4)
An = f(T) Define angle for function 'n' (1 to 4)
---- Items that can be part of expressions ----
---- Arithmetic operators ---- | ---- Built in constants ----
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+ Addition | PI Pi (3.14159....)
- Subtraction (or unary minus) | E Base of logs (2.718...)
* Multiplication |
/ Division | ---- Parameters ----
** or ^ Exponentation | P0, P1, ..., P9
---- Built in functions ----
ABS(x) -- Absolute value. LOG10(x) -- Log base 10.
ACOS(x) -- Arc cosine. MAX(a,b) -- Larger of a or b.
ASIN(x) -- Arc sine. MIN(a,b) -- Smaller of a or b.
ATAN(x) -- Arc tangent. NORMAL(x) -- Normal probability distrib.
COS(x) -- Cosine. PULSE(a,x,b) -- 1 if a<=x<=b, else 0.
CSC(x) -- Cosecant. RAD(x) -- Convert degrees to radians.
COSH(x) -- Hyperbolic cosine. SEC(x) -- Secant.
COT(x) -- Cotangent. SIN(x) -- Sine.
DEG(x) -- Convert radians to degrees. SINH(x) -- Hyperbolic sine.
EXP(x) -- e to x power. SQRT(x) -- Square root.
GAMMA(x) -- Gamma function. STEP(a,x) -- 1 if a<=x, else 0.
GAMMAI(x) -- 1/Gamma function. T(n,x) -- Chebyshev polynomial order n.
HAV(x) -- Haversine. TAN(x) -- Tangent.
J0(x) -- Bessel, 1st kind, order 0. TANH(x) -- Hyperbolic tangent.
J1(x) -- Bessel, 1st kind, order 1. Y0(x) -- Bessel, 2nd kind, order 0.
JN(n,x) -- Bessel, 1st kind, order n. Y1(x) -- Bessel, 2nd kind, order 1.
LOG(x) -- Natural log. YN(n,x) -- Bessel, 2nd kind, order n.
---- Commands ----
AXES {ON | OFF} (default=OFF) -- Display axes without labels.
CALCULATE cexpr -- Calculate and print the value of an expression.
CAXES cexpr (default=3) -- Set color for axes and labels.
CFn cexpr (default=2,1,4,3) -- Set color for plot of function 'n'.
CGRID cexpr (default=8) -- Set color for grid lines.
CLEAR -- Clear the screen.
COMMONSCALE {ON | OFF} (default=OFF) -- Force X and Y axes to have same scale.
CTITLE cexpr (default=7) -- Set color for title line.
DATA filespec -- Read data values from specified file.
---- More commands ----
DISPLAY string -- Display the string on the console.
DO filespec -- Execute commands stored in external file.
DOMAIN cexpr,cexpr (default=0,2*pi) -- Set data range to be plotted.
EXIT -- Exit from MATHPLOT and return to DOS.
GRID {ON | OFF} (default=OFF) -- Control display of grid lines.
LABEL {ON | OFF} (default=OFF) -- Control display of axis labels.
LIST {ON | OFF} (default=OFF) -- List files executed by DO command.
NUMPOINTS cexpr (default=100) -- Number of points to evaluate and plot.
ORIGIN {ON | OFF} (default=OFF) -- Force origin (0,0) to be displayed.
---- More commands ----
PAUSE [cexpr] -- Pause for specified number of seconds or until key is pressed.
PLOT -- Evaluate and plot the currently defined function(s).
Pn cexpr -- Specify value for parameter P0, P1, ..., P9.
PDEVICE device (default=PRN) -- Specify printer device name.
PRINT {ON | OFF} (default=OFF) -- Enable output to printer.
RESET -- Reset all parameters to initial values and remove functions.
SAVE filespec -- Save current plot description in external file.
TABULATE -- Evaluate functions and list values.
TITLE string -- Specify title for plot.
---- More commands ----
WAXES cexpr (default=3) -- Specify the width of printed axis lines.
WFn cexpr (default=3) -- Specify the width used to print function n.
WGIRD cexpr (default=1) -- Specify the width of printed grid lines.