smile.data.measure.NumericalMeasure Maven / Gradle / Ivy
/*
* Copyright (c) 2010-2021 Haifeng Li. All rights reserved.
*
* Smile is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Smile is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Smile. If not, see .
*/
package smile.data.measure;
import java.text.NumberFormat;
import java.text.ParseException;
/**
* Numerical data, also called quantitative data. Numerical data may be
* discrete or continuous. Continuous data may be subdivided into interval
* data and ratio data.
*
* @author Haifeng Li
*/
public abstract class NumericalMeasure implements Measure {
/** For formatting and parsing numbers. */
private final NumberFormat format;
/**
* Constructor.
* @param format the number format.
*/
public NumericalMeasure(NumberFormat format) {
this.format = format;
}
@Override
public String toString(Object o) {
return format.format(o);
}
@Override
public Number valueOf(String s) throws NumberFormatException {
try {
return format.parse(s);
} catch (ParseException ex) {
throw new NumberFormatException(ex.getMessage());
}
}
}