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 *    The ASF licenses this file to You under the Apache License, Version 2.0
 *    (the "License"); you may not use this file except in compliance with
 *    the License.  You may obtain a copy of the License at
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 *        http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.poi.ss.formula.functions;

import org.apache.poi.ss.formula.eval.ValueEval;
import org.apache.poi.ss.formula.functions.LinearRegressionFunction.FUNCTION;

/**
 * Implementation of Excel function SLOPE()

* * Calculates the SLOPE of the linear regression line that is used to predict y values from x values
* (http://introcs.cs.princeton.edu/java/97data/LinearRegression.java.html) * Syntax:
* SLOPE(arrayX, arrayY) */ public final class Slope extends Fixed2ArgFunction { private final LinearRegressionFunction func; public Slope() { func = new LinearRegressionFunction(FUNCTION.SLOPE); } @Override public ValueEval evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0, ValueEval arg1) { return func.evaluate(srcRowIndex, srcColumnIndex, arg0, arg1); } }





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