Parameter |
Value type |
Description |

label |
String |
Label string to be displayed at the top of the applet |

editable |
boolean |
If true, the applet allows editing equations, initial conditions, etc. |

background |
String |
Background color, format "rrggbb" |

foreground |
String |
Foreground color, format "rrggbb" |

dimension |
int |
Number of ODE's |

parameter |
String |
Parameter (indep. variable) of ODE's, same as variable0 |

variableN |
String |
Name of variable #N, N=0,1,..., dimension (variable0 is the indep. variable) |

equationN |
String |
Expression of equation #N, N=0,...,dimension; equation0 is synonymous with "initcode". |

functionN |
String |
Expression of function #N, N=0,...,dimension |

initcode |
String |
Expression of equation #0; this expression is evaluated only once; can be used to define constants, functions, etc. |

minN |
double/expression |
Low limit for variableN, N=0,1,...,dimension |

maxN |
double/expression |
High limit for variableN, N=0,1,...,dimension |

segmentsN |
int |
Number of segments in the grid for variable #N |

parametersegments |
int |
Number of segments in the grid of the parameter, i.e. variable0 |

initconds |
String |
List of init. coonditions, e.g "0,0;1.2,1;1,2" or "(0,0),(1.2,1),(1,2)" |

showslopes |
boolean |
If set, display slope field |

showtickmarks |
boolean |
If set, display tick marks around the plot |

showsolutions |
boolean |
If set, display solutions specified by initconds |

showfunctions |
boolean |
If set, display graphs of functions |

showequations |
boolean |
If set, display equations |

showranges |
boolean |
If set, display ranges of variables and axis selection tools near the border of the phase diagram |

showinitconditions |
boolean |
If set, display and label init. conditions |

showlines |
boolean |
If set, show segments of lines joining two consecutive calculated points in solutions |

showpoints |
boolean |
If set, show calculated points of solutions |

algorithm |
String |
Sets the numerical algorithm. Known: Euler, ModifiedEuler, Midpoint, RK4 (Runge-Kutta 4), RKF (Runge-Kutta-Fehlberg) |

isframed |
boolean |
If set, the applet runs in a frame. |

autonomous |
boolean |
If set, the system is autonomous, the paramater (variable0) does not appear in ODE's |

minparameter |
double/expression |
Low limit for the time parameter |

maxparameter |
double/expression |
High limit for the time parameter |

minx |
double |
Low end of x-range (when dim=2, autonomous=false only) |

maxx |
double |
High end of x-range (dim=2, autonomous=false only) |

miny |
double |
Low end of y-range (dim=2, autonomous=false only) |

maxy |
double |
High end of y-range (dim=2, autonomous=false only) |

formula |
String |
Right-hand side of ODE y'=f(x,y) (dim=2, autonomous=false only) |

xsegments |
int |
Number of segments in the x-direction (dim=2, autonomous=false only) |

ysegments |
int |
Number of segments in the y-direction (dim=2, autonomous=false only) |

abscissa |
int |
Index of variable to be used as abscissa of the plot (default 0 if autonomous = false, 1 otherwise). |

ordinate |
int |
Index of variable to be used as ordinate of the plot (default 1 if autonomous = false, 2 otherwise). |

step |
double |
Step of integration. |

nStepsLimit |
int |
Maximal number of steps (vector field of function evaluations) to obtain a single curve (default: 100000). |

librarycode |
String |
Library of code which will be evaluated once when the applet is started. |

lefthanded |
boolean |
If true, some controls will appear on the left, instead of right. |

options |
String |
A sequence of parameter=value assignments with ";" as separator, e.g. "dimension = 2; isframed = true". Trailing blanks and tabs in value and around "=" are discarded. This option is an alternative to all other options, and is espectially convenient if the settings to the applet are generated automatically by running an external program. |