h5read — Read dense numeric, logical, or string datasets from an HDF5 file.
h5read(filename, dataset) reads a dataset from a native HDF5 file. h5read(filename, dataset, start, count) and h5read(filename, dataset, start, count, stride) read one-based hyperslab selections.
Syntax
h5read(filename, dataset)How h5read works
- Dense floating-point, integer, logical, and variable-length string datasets are mapped to RunMat numeric, logical, and string values.
- Dataset dimensions are preserved while converting HDF5 row-major raw storage to RunMat column-major arrays.
- Compound, reference, enum, fixed-array, and nested variable-length HDF5 types raise deterministic unsupported-type errors.
Example
Read a dataset
A = h5read('measurements.h5', '/group/A');Using h5read with coding agents
Open a RunMat example with live inputs, then ask the agent to explain how h5read changes the result.
Run a small h5read example, explain the result, then change one input and compare the output.
Related Io functions
Repl Fs
addpath · cd · copyfile · delete · dir · exist · fileattrib · fileparts · fullfile · genpath · getenv · getpref · isenv · isfile · isfolder · ispref · ls · matlabroot · memmapfile · mkdir · movefile · open · opentoline · path · pathsep · pcode · pwd · readstruct · rehash · restoredefaultpath · rmdir · rmpath · run · savepath · setenv · setpref · system · tempdir · tempname · uigetdir · uigetfile · uiputfile · unsetenv · userpath · what · winqueryreg · xmlread · xmlwrite
Tabular
arrayDatastore · csvread · csvwrite · detectImportOptions · dlmread · dlmwrite · fileDatastore · parquetDatastore · parquetinfo · parquetread · readcell · readmatrix · readtimetable · spreadsheetImportOptions · writecell · writematrix · writetable · writetimetable · xlsread · xlswrite
Filetext
fclose · feof · fgetl · fgets · fileread · filewrite · fopen · fprintf · fread · frewind · fwrite · readlines · writelines
Import
Json
Open-source implementation
Unlike proprietary runtimes, every RunMat function is open-source. Read exactly how h5read is executed, line by line, in Rust.
- View the source for h5read in Rust on GitHub
- Learn how the RunMat runtime works
- Found a bug? Open an issue with a minimal reproduction.
About RunMat
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