/**
* Create a function in any dimension evaluation.
*
* <p>The function may have many independent variables.
*
* <p>
*
* <h3>List of commands</h3>
*
* <ul>
* <li>( ) parenthesis , comma
* <li>+, -, unary -, unary +
* <li>*, /
* <li>^ (raise to a power)
* <li>pi, e, All the constants in class SpecialFunction
* <li>log
* <li>sin, cos, tan, sinh, cosh, tanh
* <li>asin, acos, atan, asinh, acosh, atanh
* <li>sqrt
* <li>rand
* <li>exp
* <li>remainder
* <li>atan2
* <li>Special functions and constants. Look at the book
* <li>All the functions in class SpecialFunction
* <li>Independent variables x
* <li>Scientific notation using "e", "E", "d", "D".
* </ul>
*
* @prama title Title of the function
* @param name String representing the function
* @param vars String representing variables. Each variable should be separated by a comma.
* Example "x,y,z"
*/
public FND(String title, String name, String vars) {
this.title = title;
proxy = new FProxy(3, title, name, null, new double[] {0, 0, 0, 0, 0, 0}, maxpoints, true);
name = proxy.getName();
proxy.setVariables(vars);
setTitle(title);
lpp.setType(LinePars.F1D);
jep = new XJep();
jep.addStandardConstants();
jep.addStandardFunctions();
jep.setAllowUndeclared(true);
jep.setImplicitMul(true);
jep.setAllowAssignment(true);
// get all variables
avars = vars.split(",");
for (int i = 0; i < avars.length; i++) {
jep.addVariable(avars[i].trim(), 0);
}
jep.addVariable("x", 0);
try {
node = jep.parse(name);
processed = jep.preprocess(node);
} catch (ParseException e) {
} catch (Exception e) {
ErrorMessage("Error in parsing " + name);
}
}
/**
* Initialize function from proxy.
*
* @param f
*/
public FND(FProxy f) {
proxy = f;
String name = proxy.getName();
if (proxy.getType() != 4) {
ErrorMessage("Error in parsing FND. Wrong type! " + name);
return;
}
setTitle(proxy.getTitle());
lpp.setType(LinePars.F1D);
jep = new XJep();
jep.addStandardConstants();
jep.addStandardFunctions();
jep.setAllowUndeclared(true);
jep.setImplicitMul(true);
jep.setAllowAssignment(true);
// get all variables
String vars = proxy.getVariables();
avars = vars.split(",");
for (int i = 0; i < avars.length; i++) {
jep.addVariable(avars[i].trim(), 0);
}
jep.addVariable("x", 0);
try {
node = jep.parse(name);
processed = jep.preprocess(node);
} catch (ParseException e) {
} catch (Exception e) {
ErrorMessage("Error in parsing " + name);
}
}