[Boost-commit] svn:boost r50518 - sandbox/SOC/2007/visualization/libs/svg_plot/example

Subject: [Boost-commit] svn:boost r50518 - sandbox/SOC/2007/visualization/libs/svg_plot/example
From: pbristow_at_[hidden]
Date: 2009-01-08 12:05:56

Author: pbristow
Date: 2009-01-08 12:05:55 EST (Thu, 08 Jan 2009)
New Revision: 50518
URL: http://svn.boost.org/trac/boost/changeset/50518

Log:
1st commit for augoscaled boxplot example/auto_boxplot.cpp
Added:
   sandbox/SOC/2007/visualization/libs/svg_plot/example/auto_boxplot.cpp   (contents, props changed)

Added: sandbox/SOC/2007/visualization/libs/svg_plot/example/auto_boxplot.cpp
==============================================================================
--- (empty file)
+++ sandbox/SOC/2007/visualization/libs/svg_plot/example/auto_boxplot.cpp	2009-01-08 12:05:55 EST (Thu, 08 Jan 2009)
@@ -0,0 +1,154 @@
+// auto_boxplot.cpp
+
+// Copyright Jacob Voytko 2007
+// Copyright Paul A Bristow 2008
+
+// Use, modification and distribution are subject to the
+// Boost Software License, Version 1.0.
+// (See accompanying file LICENSE_1_0.txt
+// or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+// An example to demonstrate boxplot settings, including *auto-scaling*.
+// See auto_boxcontainers.cpp for an example autoscaling with multiple data series.
+// See also demo_boxplot.cpp for a wider range of use.
+
+// This file is written to be included from a Quickbook .qbk document.
+// It can be compiled by the C++ compiler, and run. Any output can
+// also be added here as comment or included or pasted in elsewhere.
+
+// Caution: this file contains Quickbook markup as well as code
+// and comments: don't change any of the special comment markups!
+
+//[auto_boxplot_1
+
+/*`First we need a few includes to use Boost.Plot
+(and some others only needed for this example).
+*/
+
+#include <boost/svg_plot/svg_boxplot.hpp>
+  using boost::svg::svg_boxplot;
+
+#include <boost/svg_plot/detail/pair.hpp>
+// (Provides operator<< for std::pair).
+
+#include <boost/algorithm/minmax.hpp>
+ using boost::minmax;
+#include <boost/algorithm/minmax_element.hpp>
+ using boost::minmax_element;
+
+#include <iostream> // for debugging.
+  using std::cout;
+  using std::endl;
+  using std::boolalpha;
+
+#include <limits>
+  using std::numeric_limits;
+
+#include <vector>
+  using std::vector;
+#include <set>
+  using std::multiset;
+
+#include <utility>
+  using std::pair;
+
+#include <boost/svg_plot/detail/auto_axes.hpp>
+  using boost::svg::show; // A single STL container.
+  using boost::svg::show_all; // Multiple STL containers.
+  using boost::svg::range; // Find min and max of a STL container.
+  using boost::svg::range_all;// Find min and max of multipler STL containers.
+
+//] [/auto_boxplot_1]
+
+void scale_axis(double min_value, double max_value, // input
+               double* axis_min_value,  double* axis_max_value, double* axis_tick_increment, // updated.
+               bool origin, double tight, int min_ticks, int steps); 
+
+double tol100eps = 1000 * numeric_limits<double>::epsilon(); // Suitable tight value.
+
+int main()
+{
+  using namespace boost::svg; // Especially convenient for SVG colors.
+
+  //[auto_boxplot_2
+  /*`
+  This example uses containers to demonstrate autoscaling.
+  Autoscaling must inspect the container in order to find axis ranges that will be suitable.
+  First we create a container and fill with some fictional data.
+  */
+	vector<double> my_data;
+	// Initialize my_data with some entirely fictional data.
+  my_data.push_back(0.2); // [0]
+  my_data.push_back(1.1); // [1]
+  my_data.push_back(4.2); // [2]
+  my_data.push_back(3.3); // [3]
+  my_data.push_back(5.4); // [4]
+  my_data.push_back(6.5); // [5]
+  my_data.push_back(6.8); // [6]
+  my_data.push_back(6.9); // [7]
+  my_data.push_back(7.2); // [8]
+  my_data.push_back(7.3); // [9]
+  my_data.push_back(8.1); // [10]
+  my_data.push_back(8.5); // [11]
+
+  /*`Also included is an 'at limit' value that could confuse autoscaling.
+  Obviously we do not want the plot range to include infinity.*/
+  // my_data.push_back(numeric_limits<double>::infinity()); // [12]
+
+  try
+  { // Ensure error, warning and information messages from svg_plot are displayed by the catch block.
+    
+    double mn; // Ready to be updated by mnmx;
+    double mx;
+    int good = mnmx(my_data.begin(), my_data.end(), &mn, &mx);
+    cout << good << " good values, " << my_data.size() - good << " limit values."
+      << " min value = " << mn << ", max = " << mx << endl;
+    // 12 good values, 0 limit values. min value = 0.2, max = 8.5
+
+    svg_boxplot my_boxplot; // Construct a plot with all the default constructor values.
+    my_boxplot.title("Auto boxplot");
+    my_boxplot.y_label("Values");
+    my_boxplot.y_autoscale(my_data);  // Compute autoscale values for the plot.
+    //my_boxplot.y_autoscale(my_data.begin(), my_data.end());  // Compute autoscale values for the plot.
+    // my_boxplot.y_autoscale(std::make_pair(0., 10.));
+    //my_boxplot.y_autoscale(0., 9.);  // Compute autoscale values for the plot.
+    cout << boolalpha << "Use y autoscale " << my_boxplot.y_autoscale() << "."<< endl;
+    my_boxplot.plot(my_data, "Auto boxplot"); // Add the one data series, and give it a title.
+    my_boxplot.write("auto_boxplot.svg"); // Write the plot to file.
+
+    /*`It may be useful to display that range chosen by autoscaling. */
+    using boost::svg::detail::operator<<; // For displaying std::pair.
+    cout << "y_range() " << my_boxplot.y_range() << endl; // x_range() 
+  }
+  catch(const std::exception& e)
+  { // Error, warning and information messages are displayed by the catch block.
+    std::cout <<
+      "\n""Message from thrown exception was:\n   " << e.what() << std::endl;
+  }
+
+  //] [/auto_boxplot_2]
+
+	return 0;
+} // int main()
+
+/*
+
+//[auto_boxplot_output
+
+Compiling...
+auto_boxplot.cpp
+Linking...
+Embedding manifest...
+Autorun "j:\Cpp\SVG\debug\auto_boxplot.exe"
+12 good values, 0 limit values. min value = 0.2, max = 8.5
+Use y autoscale true.
+Min outlier fences <-1.7 or >12.6333
+Min extreme fences <-7.075 or >18.0083
+y_range() 0, 9
+Build Time 0:02
+Build log was saved at "file://j:\Cpp\SVG\auto_boxplot\Debug\BuildLog.htm"
+
+//] [auto_boxplot_output]
+
+*/
+