# fVTKHDF v0.7.0: Structured grid support for Fortran applications

**URL:** <https://discourse.vtk.org/t/fvtkhdf-v0-7-0-structured-grid-support-for-fortran-applications/16610>\
**Category:** Development\
**Tags:** file-formats\
**Created:** [November 11, 2026, 2:38pm UTC](https://discourse.vtk.org/t/fvtkhdf-v0-7-0-structured-grid-support-for-fortran-applications/16610 "2026-11-11T14:38:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![nncarlson](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/n/ed655f/32.png) [@nncarlson](https://discourse.vtk.org/u/nncarlson)\
**Post date:** [November 11, 2026, 2:38pm UTC](https://discourse.vtk.org/t/fvtkhdf-v0-7-0-structured-grid-support-for-fortran-applications/16610/1 "2026-11-11T14:38:32Z")

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I’ve just released [fVTKHDF v0.7.0](https://github.com/nncarlson/fvtkhdf/releases/tag/v0.7.0), adding Fortran writers for **ImageData, RectilinearGrid, and StructuredGrid** , alongside the existing UnstructuredGrid and MultiBlockDataSet support.

As described in the [original announcement](https://discourse.vtk.org/t/first-release-of-fvtkhdf-a-modern-fortran-library-for-writing-vtkhdf-files/16304), [fVTKHDF](https://github.com/nncarlson/fvtkhdf) provides a high-level, object-oriented Fortran 2018 interface for writing VTKHDF files. It supports both collective output using parallel HDF5 and serial builds without MPI.

The new structured-grid writers support static and time-dependent data, incremental region writes with halo exclusion, and moving geometry for RectilinearGrid and StructuredGrid.

Examples and the [reference manual](https://nncarlson.github.io/fvtkhdf/) cover all supported dataset types. Feedback, bug reports, and suggestions are welcome, particularly from people integrating VTKHDF output into Fortran simulation codes.