Examples of Atan

org.apache.commons.math3.analysis.function.Atan
Arc-tangent function. @since 3.0
org.apache.pig.piggybank.evaluation.math.ATAN
math.ATAN implements a binding to the Java function {@link java.lang.Math#atan(double) Math.atan(double)} for computing thearc tangent of value of the argument. The returned value will be a double which is the arc tangent of the value of input.

Parameters:

value - DataAtom [double].

Return Value:

DataAtom [double] arc tangent of the value of input

Return Schema:

atan_inputSchema

Example:

register math.jar; A = load 'mydata' using PigStorage() as ( float1 ); B = foreach A generate float1, math.ATAN(float1);

@see Math#atan(double) @see @author ajay garg
org.boris.expr.function.excel.ATAN

Examples of org.apache.commons.math3.analysis.function.Atan

    @Override
    protected UnivariateFunction[] createFunctions() {
        return new UnivariateFunction[] {
            new Power(2.0), new Exp(), new Expm1(),
            new Log1p(), new Cosh(), new Sinh(), new Tanh(), new Cos(),
            new Sin(), new Tan(), new Acos(), new Asin(), new Atan(),
            new Abs(), new Sqrt(), new Cbrt(), new Ceil(),
            new Floor(), new Rint(), new Signum()
        };
    }

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Examples of org.apache.commons.math3.analysis.function.Atan

    @Override
    protected UnivariateFunction[] createFunctions() {
        return new UnivariateFunction[] {
            new Power(2.0), new Exp(), new Expm1(),
            new Log1p(), new Cosh(), new Sinh(), new Tanh(), new Cos(),
            new Sin(), new Tan(), new Acos(), new Asin(), new Atan(),
            new Abs(), new Sqrt(), new Cbrt(), new Ceil(),
            new Floor(), new Rint(), new Signum()
        };
    }

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Examples of org.apache.commons.math3.analysis.function.Atan


    protected UnivariateFunction[] createFunctions() {
        return new UnivariateFunction[] {
            new Power(2.0), new Exp(), new Expm1(), new Log(), new Log10(),
            new Log1p(), new Cosh(), new Sinh(), new Tanh(), new Cos(),
            new Sin(), new Tan(), new Acos(), new Asin(), new Atan(),
            new Inverse(), new Abs(), new Sqrt(), new Cbrt(), new Ceil(),
            new Floor(), new Rint(), new Signum(), new Ulp()
        };
    }

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Examples of org.apache.commons.math3.analysis.function.Atan


    private UnivariateFunction[] createFunctions() {
        return new UnivariateFunction[] {
            new Power(2.0), new Exp(), new Expm1(), new Log(), new Log10(),
            new Log1p(), new Cosh(), new Sinh(), new Tanh(), new Cos(),
            new Sin(), new Tan(), new Acos(), new Asin(), new Atan(),
            new Inverse(), new Abs(), new Sqrt(), new Cbrt(), new Ceil(),
            new Floor(), new Rint(), new Signum(), new Ulp()
        };
    }

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Examples of org.apache.commons.math3.analysis.function.Atan

        v_mapAsinToSelf.mapToSelf(new Asin());
        double[] result_mapAsinToSelf = {0.0d,5.235987755982989e-01d,1.570796326794897e+00d};
        assertClose("compare vectors" ,result_mapAsinToSelf,v_mapAsinToSelf.toArray(),normTolerance);


        //octave =  atan(vat)
        RealVector v_mapAtan = vat.map(new Atan());
        double[] result_mapAtan = {0.0d,4.636476090008061e-01d,7.853981633974483e-01d};
        assertClose("compare vectors" ,result_mapAtan,v_mapAtan.toArray(),normTolerance);


        //octave =  atan(vat)
        RealVector v_mapAtanToSelf = vat.copy();
        v_mapAtanToSelf.mapToSelf(new Atan());
        double[] result_mapAtanToSelf = {0.0d,4.636476090008061e-01d,7.853981633974483e-01d};
        assertClose("compare vectors" ,result_mapAtanToSelf,v_mapAtanToSelf.toArray(),normTolerance);


        //octave =  v1 .^-1
        RealVector v_mapInv = v1.map(new Inverse());

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Examples of org.apache.commons.math3.analysis.function.Atan

        v_mapAsinToSelf.mapToSelf(new Asin());
        double[] result_mapAsinToSelf = {0.0d,5.235987755982989e-01d,1.570796326794897e+00d};
        assertClose("compare vectors" ,result_mapAsinToSelf,v_mapAsinToSelf.toArray(),normTolerance);


        //octave =  atan(vat)
        RealVector v_mapAtan = vat.map(new Atan());
        double[] result_mapAtan = {0.0d,4.636476090008061e-01d,7.853981633974483e-01d};
        assertClose("compare vectors" ,result_mapAtan,v_mapAtan.toArray(),normTolerance);


        //octave =  atan(vat)
        RealVector v_mapAtanToSelf = vat.copy();
        v_mapAtanToSelf.mapToSelf(new Atan());
        double[] result_mapAtanToSelf = {0.0d,4.636476090008061e-01d,7.853981633974483e-01d};
        assertClose("compare vectors" ,result_mapAtanToSelf,v_mapAtanToSelf.toArray(),normTolerance);


        //octave =  v1 .^-1
        RealVector v_mapInv = v1.map(new Inverse());

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Examples of org.apache.pig.piggybank.evaluation.math.ATAN

          double actual = (new Double(output.strval())).doubleValue();
          assertEquals(actual, expected, delta);
      }
   
   public void testATAN() throws Exception {
          EvalFunc<DataAtom> ATAN = new ATAN();
          Tuple tup = new Tuple(1);
          tup.setField(0, 0.5);
          DataAtom output = new DataAtom();
          ATAN.exec(tup, output);
          double expected = Math.atan(0.5);
          double actual = (new Double(output.strval())).doubleValue();
          assertEquals(actual, expected, delta);
      }

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Examples of org.boris.expr.function.excel.ATAN

        assertEquals(TH.eval(a, 2.5), 1.647231146371);
        assertEquals(TH.eval(a, 10), 2.99822295029);
    }


    public void testATAN() throws Exception {
        ATAN a = new ATAN();
        TH.testDoubleInOutFunction(a);
        for (int i = 0; i < 100; i++) {
            double d = Math.random() * Math.PI;
            assertEquals("ATAN not working", TH.eval(a, d), Math.atan(d));
        }

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