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From pste...@apache.org
Subject svn commit: r921479 - /commons/proper/math/trunk/src/test/R/cauchyTestCases.R
Date Wed, 10 Mar 2010 17:52:46 GMT
Author: psteitz
Date: Wed Mar 10 17:52:45 2010
New Revision: 921479

URL: http://svn.apache.org/viewvc?rev=921479&view=rev
Log:
Added Cauchy distribution verification tests.

Added:
    commons/proper/math/trunk/src/test/R/cauchyTestCases.R   (with props)

Added: commons/proper/math/trunk/src/test/R/cauchyTestCases.R
URL: http://svn.apache.org/viewvc/commons/proper/math/trunk/src/test/R/cauchyTestCases.R?rev=921479&view=auto
==============================================================================
--- commons/proper/math/trunk/src/test/R/cauchyTestCases.R (added)
+++ commons/proper/math/trunk/src/test/R/cauchyTestCases.R Wed Mar 10 17:52:45 2010
@@ -0,0 +1,95 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# 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
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+#------------------------------------------------------------------------------
+# R source file to validate Cauchy distribution tests in
+# org.apache.commons.math.distribution.CauchyDistributionTest
+#
+# To run the test, install R, put this file and testFunctions
+# into the same directory, launch R from this directory and then enter
+# source("<name-of-this-file>")
+#
+#-----------------------------------------------------------------------------
+tol <- 1E-9
+
+# Function definitions
+
+source("testFunctions")           # utility test functions
+
+# function to verify distribution computations
+
+verifyDistribution <- function(points, expected, median, scale, tol) {
+ rDistValues <- rep(0, length(points))
+    i <- 0
+    for (point in points) {
+        i <- i + 1
+        rDistValues[i] <- pcauchy(point, median, scale, log = FALSE)
+    }
+    output <- c("Distribution test median = ",median,", scale = ", scale)
+    if (assertEquals(expected, rDistValues, tol, "Distribution Values")) {
+        displayPadded(output, SUCCEEDED, WIDTH)
+    } else {
+        displayPadded(output, FAILED, WIDTH)
+    }       
+}
+
+# function to verify density computations
+
+verifyDensity <- function(points, expected, median, scale, tol) {
+ rDensityValues <- rep(0, length(points))
+    i <- 0
+    for (point in points) {
+        i <- i + 1
+        rDensityValues[i] <- dcauchy(point, median, scale, log = FALSE)
+    }
+    output <- c("Density test median = ",median,", scale = ", scale)
+    if (assertEquals(expected, rDensityValues, tol, "Density Values")) {
+        displayPadded(output, SUCCEEDED, WIDTH)
+    } else {
+        displayPadded(output, FAILED, WIDTH)
+    }       
+}
+
+verifyQuantiles <- function(points, expected, median, scale, tol) {
+	rQuantileValues <- rep(0, length(points))
+    i <- 0
+    for (point in points) {
+        i <- i + 1
+        rQuantileValues[i] <- qcauchy(point, median, scale, log = FALSE)
+    }
+    output <- c("Quantile test median = ",median,", scale = ", scale)
+    if (assertEquals(expected, rQuantileValues, tol, "Quantile Values")) {
+        displayPadded(output, SUCCEEDED, WIDTH)
+    } else {
+        displayPadded(output, FAILED, WIDTH)
+    }    
+}
+
+#--------------------------------------------------------------------------
+cat("Cauchy test cases\n")
+
+median <- 1.2
+scale <- 2.1
+distributionValues <- c(0.001, 0.01, 0.025, 0.05, 0.1, 0.999,
+                0.990, 0.975, 0.950, 0.900)
+densityValues <- c(1.49599158008e-06, 0.000149550440335, 0.000933076881878, 0.00370933207799,
0.0144742330437,
+                1.49599158008e-06, 0.000149550440335, 0.000933076881878, 0.00370933207799,
0.0144742330437)
+distributionPoints <- c(-667.24856187, -65.6230835029, -25.4830299460, -12.0588781808,
-5.26313542807,
+                669.64856187, 68.0230835029, 27.8830299460, 14.4588781808, 7.66313542807)
+verifyDistribution(distributionPoints, distributionValues, median, scale, tol)
+verifyDensity(distributionPoints, densityValues, median, scale, tol)
+verifyQuantiles(distributionValues, distributionPoints, median, scale, tol)
+
+displayDashes(WIDTH)

Propchange: commons/proper/math/trunk/src/test/R/cauchyTestCases.R
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Propchange: commons/proper/math/trunk/src/test/R/cauchyTestCases.R
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Propchange: commons/proper/math/trunk/src/test/R/cauchyTestCases.R
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