Advances in the NetCDF Data Model, Format, and Software - Unidata

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Outline • Background • Recent advances – Refactoring for interoperability – Performance improvements – Experience adapting software to enhanced data model – Standards status • State of adoption of netCDF-4 • Summary
NetCDF: more than a format • Data model – netCDF-3 classic data model: Variables, Dimensions, Attributes – netCDF-4 enhanced data model: adds Groups, user-defined Types • File format – classic format, 64-bit variant – netCDF-4 (HDF5-based) format, classic model variant • Application programming interfaces (APIs) – C-based APIS: C, Fortran, C++, Python, Perl, Ruby, MATLAB, IDL, … – Java API: Java, MATLAB Together, the data model, file format, and APIs support the creation, access, and sharing of scientific data
Page 1: Advances in the NetCDF Data Model,
Page 5 and 6: The netCDF “classic” data model
Page 7 and 8: NetCDF classic format Strengths Lim
Page 9 and 10: NetCDF enhanced data model Strength
Page 11 and 12: Recent advances Standards Refactori
Page 13 and 14: NetCDF-Java/Common Data Model archi
Page 15 and 16: Performance improvements • Refact
Page 17 and 18: Experience developing nccopy utilit
Page 19 and 20: Last year: game of “chicken”; w
Page 21 and 22: Concluding Remarks • Data provide
Page 23 and 24: Extra Slides
Page 25 and 26: Groups • Like directories in a fi
Page 27 and 28: Compound types Uses include: • Re
Page 29 and 30: Guidance for developers • Add sup

Advances in the NetCDF Data Model, Format, and Software - Unidata

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