HDFql is a high-level language to work with HDF5 data, designed to be as simple and powerful as SQL.
Questions tagged [hdfql]
21 questions
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1 answer
HDFql Get Size of Group
I am wondering how to get the number of datasets within a group using C++ and HDFql. Currently I have tried something like this (inspired by the HDFql manual):
char script[1024];
uint64_t group_size = 0;
sprintf(script, "SHOW my_group SIZE INTO…
Mr Squid
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3 answers
HDFql Filling Dataset Iteratively from std::vector
I am trying to fill a dataset in an HDF5 file iteratively using HDFql. What I mean by iteratively, is that my simulator occasionally comes along with an update and I wish to dump some more data (which is contained in a std::vector) into my dataset.…
Mr Squid
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1 answer
Read Value of Attribute in HDFql
I am using HDFql to create an HDF5 file. I am creating a group and putting some data into it and that works fine. I then add an attribute to the file (which also seems to work, since it shows up when I inspect the HDF5 file with an HDF editor), but…
Mr Squid
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1 answer
Linking external HDFql library in CMake
I have downloaded the HDFql library and put the whole lot in /usr/local/ in my linux system. I now wish to use this library in a ROS application, so I have tried to link it in my CMakeList, which looks as following:
cmake_minimum_required(VERSION…
Mr Squid
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1 answer
How to hdf5 (Hdfsl ) file (One Column Read) read (Big Size file)
I am using the HDF5DotNet with C# and I can read only full data as the attached image in the dataset.
The hdf5 file is too big, up to nearly 1.4GB, and if I load the whole array into the memory then it will be out of memory.
I would like to read…
Tony
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conflicting declaration error when compiling in Rcpp, but g++ works fine
I am trying to compile an Rcpp package that relies on the external library HDFql.
First, I tried compiling a plain .cpp file following the directions in the reference manual, which worked fine:
g++ example.cpp -I./include/HDFql ./HDFql/libHDFql.a…
mikeck
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