varshneydevansh
aebe61498b
- Add Scott's rule for bin width calculation - Correct upper and lower limit for the Bin Range in the X-Axis This commit introduces Scott's Reference Rule as we are currently using the sqrt for histogram calculation, improving bin width determination and overall histogram accuracy. Change-Id: I4a430416e365781ebef8b1e0872dd4ed50492b9c Reviewed-on: https://gerrit.libreoffice.org/c/core/+/170526 Tested-by: Jenkins Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
127 lines
4.0 KiB
C++
127 lines
4.0 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#include <sal/config.h>
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#include "HistogramDataInterpreter.hxx"
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#include <HistogramDataSequence.hxx>
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#include "HistogramCalculator.hxx"
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#include <LabeledDataSequence.hxx>
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#include <DataSeries.hxx>
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#include <DataSeriesHelper.hxx>
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#include <CommonConverters.hxx>
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#include <com/sun/star/util/XCloneable.hpp>
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#include <comphelper/diagnose_ex.hxx>
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#include <sal/log.hxx>
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using namespace css;
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namespace chart
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{
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InterpretedData HistogramDataInterpreter::interpretDataSource(
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const uno::Reference<chart2::data::XDataSource>& xSource,
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const uno::Sequence<beans::PropertyValue>& /*aArguments*/,
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const std::vector<rtl::Reference<DataSeries>>& /*aSeriesToReUse*/)
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{
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if (!xSource.is())
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return InterpretedData();
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InterpretedData aInterpretedData;
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std::vector<uno::Reference<chart2::data::XLabeledDataSequence>> aData
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= DataInterpreter::getDataSequences(xSource);
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if (aData.empty() || !aData[0].is())
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return InterpretedData();
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SetRole(aData[0]->getValues(), u"values-y-original"_ustr);
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// Extract raw data from the spreadsheet
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std::vector<double> rawData;
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uno::Reference<chart2::data::XDataSequence> xValues = aData[0]->getValues();
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if (!xValues.is())
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return InterpretedData();
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uno::Sequence<uno::Any> aRawAnyValues = xValues->getData();
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for (const auto& aAny : aRawAnyValues)
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{
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double fValue = 0.0;
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if (aAny >>= fValue) // Extract double from Any
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{
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rawData.push_back(fValue);
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}
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}
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// Perform histogram calculations
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HistogramCalculator aHistogramCalculator;
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aHistogramCalculator.computeBinFrequencyHistogram(rawData);
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// Get bin ranges and frequencies
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const auto& binRanges = aHistogramCalculator.getBinRanges();
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const auto& binFrequencies = aHistogramCalculator.getBinFrequencies();
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// Create labels and values for HistogramDataSequence
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std::vector<OUString> aLabels;
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std::vector<double> aValues;
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for (size_t i = 0; i < binRanges.size(); ++i)
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{
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OUString aLabel;
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if (i == 0)
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{
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aLabel = u"["_ustr + OUString::number(binRanges[i].first) + u"-"_ustr
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+ OUString::number(binRanges[i].second) + u"]"_ustr;
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}
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else
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{
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aLabel = u"("_ustr + OUString::number(binRanges[i].first) + u"-"_ustr
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+ OUString::number(binRanges[i].second) + u"]"_ustr;
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}
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aLabels.push_back(aLabel);
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aValues.push_back(static_cast<double>(binFrequencies[i]));
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}
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rtl::Reference<DataSeries> xSeries = new DataSeries;
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std::vector<uno::Reference<chart2::data::XLabeledDataSequence>> aNewData;
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aNewData.push_back(aData[0]);
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rtl::Reference<HistogramDataSequence> aValuesDataSequence = new HistogramDataSequence();
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aValuesDataSequence->setValues(comphelper::containerToSequence(aValues));
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aValuesDataSequence->setLabels(comphelper::containerToSequence(aLabels));
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uno::Reference<chart2::data::XDataSequence> aDataSequence = aValuesDataSequence;
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SetRole(aDataSequence, u"values-y"_ustr);
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aNewData.push_back(new LabeledDataSequence(aDataSequence));
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xSeries->setData(aNewData);
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std::vector<rtl::Reference<DataSeries>> aSeriesVec;
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aSeriesVec.push_back(xSeries);
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aInterpretedData.Series.push_back(aSeriesVec);
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aInterpretedData.Categories = nullptr;
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return aInterpretedData;
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}
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InterpretedData
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HistogramDataInterpreter::reinterpretDataSeries(const InterpretedData& rInterpretedData)
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{
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return rInterpretedData;
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}
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bool HistogramDataInterpreter::isDataCompatible(const InterpretedData& /*aInterpretedData*/)
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{
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return false;
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}
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} // namespace chart
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/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
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