Kristian Bendiksen 4d2a868079 #14766 Fix potentially uninitialised object used for accumulation
RigStatisticsCalculator::mobileVolumeWeightedMean() accumulated into a sum
from an out-parameter that callees were not required to write. Every
implementation of the per time step overload has early-return paths that
leave the value untouched, as does RigWeightedMeanCalc::weightedMeanOverCells,
so indeterminate stack memory could be summed and presented in the UI.

Return std::optional<double> from the computation layer instead of using an
out-parameter, making "value not available" explicit and impossible to ignore:

- RigWeightedMeanCalc::weightedMeanOverCells
- RigStatisticsCalculator::mobileVolumeWeightedMean and all overrides

Time steps without a computable mean no longer contribute to the accumulated
sum, and are excluded from the divisor. Previously they would either add
garbage or, with a naive zero initialisation, bias the average towards zero.

RigStatisticsDataCache keeps the existing HUGE_VAL marker on its public API
via value_or(), so behaviour seen by RigHistogramData and the overlay info
is unchanged apart from the fix.

Also:
- Set m_isVolumeWeightedMeanCalculated in the per time step cache, which was
  never assigned, so the cached value was recomputed on every call.
- Remove a duplicated ensureKnownResultLoaded() call in
  RigEclipseNativeVisibleCellsStatCalc.

Fixes #14766
2026-09-21 18:36:27 +02:00
2024-10-04 13:25:20 +02:00
2024-10-31 15:39:52 +01:00
2013-04-19 08:58:57 +02:00

ResInsight

ResInsight is an open source, cross-platform 3D visualization and post-processing tool for reservoir models and simulations.

Key Features

  • Specialized Visualizations: Tailored for efficient interpretation of reservoir simulation data with visualizations of properties, faults, and wells
  • Performance-Oriented: Exploits multi-core CPUs and GPUs for highly responsive operation
  • Statistical Analysis: Handles large numbers of realizations with built-in statistical calculations
  • Python Integration: Enables powerful result manipulation and computations with two-way data exchange
  • GNU Octave Integration: Enables powerful result manipulation and computations with two-way data exchange
  • Extensible Framework: Supports additional data sources and visualization methods (solvers, seismic data, CSEM, geomechanics)
  • Eclipse Integration: Supports export to Eclipse input formats for simulation cycles and parameter studies

Supported Input Formats

  • Eclipse binary output (*.GRID, *.EGRID files with corresponding *.INIT, *.XNNN, and *.UNRST files)
  • Selected Eclipse input file sections
  • Grid information with cell property data sets

Technology Stack

ResInsight utilizes:

  • Equinor/resdata and OPM/opm-common libraries for Eclipse result file access
  • Qt for the application framework
  • Qwt for plotting functionality
  • vcpkg for dependency management

Platform Support

ResInsight is cross-platform with automated testing on:

  • Red Hat Enterprise Linux (RHEL)
  • Ubuntu
  • Windows 11

Documentation

Development

Source Code

git clone git://github.com/OPM/ResInsight.git

Minimum Requirements

  • gcc 13
  • clang 19
  • CMake 3.15
  • MSVC 2022 17.4

These requirements are defined by used features in c++23 like std::stacktrace and std::expected.

Dependencies

Most dependencies are managed using vcpkg as defined in vcpkg.json

Contributing

Contributions are welcome! Please:

  • Use the dev branch for contributions and pull requests
  • Note that the master branch is kept stable and updated only for releases
  • See Spell Checking Guide for information on automated spell checking

Building

See the Build Instructions for detailed setup information.

License

ResInsight is co-developed by Equinor ASA, Ceetron Solutions AS, and Ceetron AS. The software is copyrighted by Ceetron and Equinor and licensed under GPL 3+. See the COPYING file for details.

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