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h5stream's Introduction

C++ Header only library for simple HDF5 input/output

How to use

Just include the h5stream.hpp into your your main file.

Compile

g++ -lhdf5 -lhdf5_cpp -std=c++1z example.cpp

Example

Create File with a mode.

  • "tr": Create file, truncate if exists, Default
  • "r": Readonly, file must exist
  • "rw": Read/write, file must exist
  • "x": Create file, fail if exists
h5stream::h5stream file("sample.h5", "tr");
// or 
h5stream::h5stream file("sample.h5");

write and read std::vector

Create a vector and write it to the file

std::vector<double> matrix { 1, 2, 3282, 932 };
file.write<double>(matrix, "matrix"); 

write and read Metadata

Write Attributes( Metadata) to the to the same data space

auto dspace = file.get_dataspace("matrix");
dspace.write_atr<double>(1.2, "Units");

Read data from the file

auto xx = file.read_vector<double>("matrix");
//OR
file.read<double>(xx, "matrix");

Read Attribute (Metadata)

double x = 0;
dspace.read_atr<double>(x, "Units");
std::cout << "Attribute : " << x << std::endl;
std::cout << "HDF file size (MB): " << file.file_size() << std::endl;

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