Add new and more general histogram plots.

ApplicationLibCode/ProjectDataModel/Histogram/RimHistogramDataSource.cpp

@@ -0,0 +1,99 @@
+/////////////////////////////////////////////////////////////////////////////////
+//
+//  Copyright (C) 2025 Equinor ASA
+//
+//  ResInsight 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.
+//
+//  ResInsight 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 at <http://www.gnu.org/licenses/gpl.html>
+//  for more details.
+//
+/////////////////////////////////////////////////////////////////////////////////
+
+#include "RimHistogramDataSource.h"
+
+CAF_PDM_XML_ABSTRACT_SOURCE_INIT( RimHistogramDataSource, "HistogramDataSource" );
+
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+RimHistogramDataSource::RimHistogramDataSource()
+    : dataSourceChanged( this )
+{
+    CAF_PDM_InitObject( "Histogram Data Source", );
+}
+
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+RimHistogramDataSource::~RimHistogramDataSource()
+{
+}
+
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+std::vector<double> RimHistogramDataSource::computeHistogramBins( double min, double max, int numBins, RimHistogramPlot::GraphType graphType )
+{
+    const double binSize = ( max - min ) / numBins;
+
+    std::vector<double> values;
+    for ( int i = 0; i < numBins; i++ )
+    {
+        if ( graphType == RimHistogramPlot::GraphType::BAR_GRAPH )
+        {
+            values.push_back( min + binSize * i );
+            values.push_back( min + binSize * ( i + 1 ) );
+        }
+        else if ( graphType == RimHistogramPlot::GraphType::LINE_GRAPH )
+        {
+            double centerOfBin = min + binSize * i + binSize / 2.0;
+            values.push_back( centerOfBin );
+        }
+    }
+    return values;
+}
+
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+std::vector<double> RimHistogramDataSource::computeHistogramFrequencies( const std::vector<size_t>&      values,
+                                                                         RimHistogramPlot::GraphType     graphType,
+                                                                         RimHistogramPlot::FrequencyType frequencyType )
+{
+    std::vector<double> valuesAsDouble( values.begin(), values.end() );
+    return computeHistogramFrequencies( valuesAsDouble, graphType, frequencyType );
+}
+
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+std::vector<double> RimHistogramDataSource::computeHistogramFrequencies( const std::vector<double>&      values,
+                                                                         RimHistogramPlot::GraphType     graphType,
+                                                                         RimHistogramPlot::FrequencyType frequencyType )
+{
+    double sumElements = 0.0;
+    for ( double value : values )
+        sumElements += value;
+
+    std::vector<double> frequencies;
+    for ( double frequency : values )
+    {
+        double value = frequency;
+        if ( frequencyType == RimHistogramPlot::FrequencyType::RELATIVE_FREQUENCY ) value /= sumElements;
+        if ( frequencyType == RimHistogramPlot::FrequencyType::RELATIVE_FREQUENCY_PERCENT ) value = value / sumElements * 100.0;
+
+        frequencies.push_back( value );
+        if ( graphType == RimHistogramPlot::GraphType::BAR_GRAPH )
+        {
+            frequencies.push_back( value );
+        }
+    }
+    return frequencies;
+}