/**
* Evaluate a function at a specific point for one single variable. Evaluation is done between
* xmin and xmax. It is assumed that there are no any other variable involved
*
* @param indvars Define independent variable, like 'x' Only one variable is allowed
* @param xmin xmin value for independent varible
* @param xmax xmax value for independent varible
* @return true if no errors
*/
public boolean eval(String indvars, double xmin, double xmax) {
boolean suc = true;
String name = proxy.getName();
int points = proxy.getPoints();
double min = xmin;
double max = xmax;
x = new double[points];
y = new double[points];
for (int i = 0; i < points; i++) {
x[i] = min + i * (max - min) / (points - 1);
jep.addVariable(indvars.trim(), x[i]);
try {
Object result = jep.evaluate(node);
if (result instanceof Double) {
y[i] = ((Double) jep.evaluate(node)).doubleValue();
}
} catch (ParseException e) {
jhplot.utils.Util.ErrorMessage(
"Failed to parse function " + name + " Error:" + e.toString());
suc = false;
}
}
if (suc) isEvaluated = true;
return suc;
} // end 1-D evaluation
/**
* Construct a data browser using the input file for 2D data. The file can be URL (starts from
* http or ftp).
*
* <p>File must have the extensions <br>
* : "jdat" (HBook) <br>
* "jser" (HFile) <br>
* "jxml" (HFileXML) <br>
* "jpbu" (PFile) <br>
* "root" (ROOT) <br>
* "aida/xml" (AIDA) <br>
*
* @param file input file or URL
* @param frame frame if any.
*/
public BrowserData(final String file, final GHFrame frame) {
String ss = file.toLowerCase();
if (ss.endsWith(".jser")) {
HFile hh = new HFile(file);
if (frame != null) new BrowserHFile(frame, hh, true);
else {
BrowserHFile b = new BrowserHFile(null, hh, true);
map = b.getMap();
}
} else if (ss.endsWith(".jxml")) {
HFileXML hh = new HFileXML(file);
if (frame != null) new BrowserHFileXML(frame, hh, true);
else {
BrowserHFileXML b = new BrowserHFileXML(null, hh, true);
map = b.getMap();
}
} else if (ss.endsWith(".jpbu")) {
PFile hh = new PFile(file);
if (frame != null) new jhplot.io.BrowserPFile(frame, hh, true);
else {
BrowserPFile b = new BrowserPFile(null, hh, true);
map = b.getMap();
}
} else if (ss.endsWith(".jdat")) {
jhplot.io.HBook hb = new HBook(file, "r");
// System.out.println("Call to HBook");
if (frame != null) new jhplot.io.BrowserHBook(frame, hb, true);
else {
BrowserHBook b = new BrowserHBook(null, hb, true);
map = b.getMap();
}
} else if (ss.endsWith(".root")) {
if (frame != null) new jhplot.io.BrowserRoot(frame, file, true);
else {
BrowserRoot b = new BrowserRoot(null, file, true);
map = b.getMap();
}
} else if (ss.endsWith(".xml") || ss.endsWith(".aida")) {
if (frame != null) new jhplot.io.BrowserAida(frame, file, true);
else {
BrowserAida b = new BrowserAida(null, file, true);
map = b.getMap();
}
} else {
jhplot.utils.Util.ErrorMessage(
"Not supported file format. Required: *.jser, *.jxml, *.jdat, *.root, *.jpbu");
}
;
}
/**
* Evaluate a function at a specific point for one single variable. Evaluation is done between
* xmin and xmax
*
* @param indvars Define independent variable, like 'x' Only one variable is allowed
* @param xmin xmin value for independent varible
* @param xmax xmax value for independent varible
* @param vars define values for other variables, like 'y=1,z=3'
* @return true if no errors
*/
public boolean eval(String indvars, double xmin, double xmax, String vars) {
String name = proxy.getName();
int points = proxy.getPoints();
boolean suc = true;
String[] tmp = vars.split(",");
// double[] vd = new double[tmp.length];
fixedVars = vars;
for (int i = 0; i < tmp.length; i++) {
String[] vv = tmp[i].split("=");
if (vv.length != 2) {
ErrorMessage("Error in parsing list of input variablse. Did you use val=number? ");
}
try {
double d = Double.valueOf(vv[1].trim()).doubleValue();
jep.addVariable(vv[0].trim(), d);
} catch (NumberFormatException nfe) {
System.out.println("NumberFormatException: " + nfe.getMessage());
suc = false;
}
}
double min = xmin;
double max = xmax;
x = new double[points];
y = new double[points];
for (int i = 0; i < points; i++) {
x[i] = min + i * (max - min) / (points - 1);
jep.addVariable(indvars.trim(), x[i]);
try {
Object result = jep.evaluate(node);
if (result instanceof Double) {
y[i] = ((Double) jep.evaluate(node)).doubleValue();
}
} catch (ParseException e) {
jhplot.utils.Util.ErrorMessage(
"Failed to parse function " + name + " Error:" + e.toString());
suc = false;
}
}
if (suc) isEvaluated = true;
return suc;
} // end 1-D evaluation