hdf5 | library aims to provide an abstraction of the hdf5 file | Performance Testing library
kandi X-RAY | hdf5 Summary
kandi X-RAY | hdf5 Summary
This library aims to provide an abstraction of the hdf5 file format for c++ code. It aims to reduce the number of explicit calls to the hdf5 APIs by using the c++ type system to automatically construct the appropriate datatypes. The library is a header only library so no compilation is required. Requirements: hdf5 1.6 or greater mpi-io if parallel io support is required Boost 1.37 or greater. #include #include #include . int main() { hdf::HDFFile<> file("test.h5", hdf::HDFFile<>::truncate); std::vector data(100,1.0); std::shared_ptr<> > dataset = file.writeDataset ("doubledataset", data); }.
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QUESTION
I'm probing into the Illustris API, and gathering information from a specific cosmos simulation, for a given redshift value.
This is how I request the api:
...ANSWER
Answered 2022-Apr-11 at 01:12A solution using sklearn.neighbors.radius_neighbors_graph and your example data:
QUESTION
I am working with .tif images. I try to read a .tif image in order to access it later on pixel level and read some values. The error that I get when using Pillow is this:
...ANSWER
Answered 2022-Mar-13 at 14:09Your image is 4-channels of 32-bits each. PIL doesn’t support such images - see Available Modes here.
I would suggest tifffile
or OpenCV’s cv2.imread(…, cv2.IMREAD_UNCHANGED)
QUESTION
I have this code to write chunks of arrays to HDF5 and I want to add a timestamp attribute to each chunk or another field with a datetime
...ANSWER
Answered 2022-Feb-26 at 07:44One way to have a timestamp associated to each chunk written in the HDF5 file is to have a compound dataset with two members: the first member stores the data itself while the second stores the timestamp (e.g. UNIX epoch time). Updating your code, this could look as follows:
QUESTION
While I try to install TensorFlow I get this error :
...ANSWER
Answered 2022-Feb-02 at 19:41I fix this by following Apple Developer Docs: https://developer.apple.com/metal/tensorflow-plugin/
I uninstall Miniforge
QUESTION
I have the files: main.cpp, tools.cpp, tools.h, integrator.cpp, and integrator.h.
I have tried to link HDF5 to this code (it compiles/links just fine without hdf5 stuff).
Here's what I am using to compile:
...ANSWER
Answered 2022-Feb-16 at 02:14Maybe you want also link with -lhdf5_hl_cpp
. If you had used cmake, as I suggested today, you would not have such issues.
QUESTION
I have a simple 2 layer Tensorflow model that I am trying to train on a dataset of equal-sized stereo audio files to tell me if the sound is coming more from the left side or the right side. This means the input is an array of 3072 by 2 arrays and the output is an array of 1's and 0's to represent left and right.
The problem is that when I run the program, it fails at model.fit()
with an invalid argument error.
Code:
...ANSWER
Answered 2022-Feb-07 at 17:16According to the documentation, the argument labels must be a batch_size vector with values in [0, num_classes) From your logs:
QUESTION
I am training a TensorFlow RNN model using LSTM layers to determine if sound is coming more from the right or left in a stereo audio signal. The model training goes smoothly, then, once it is done training, I get an Invalid Argument Error as shown below. Does anyone know what could be causing this? I have tried fixing it using the solution to a similar question found here, but to no avail.
I do not understand why it is expecting a tensor of shape [32,2]. Did I define that somewhere I am unaware of?
Here is my code:
...ANSWER
Answered 2022-Feb-08 at 07:13You get this error because you hard-coded the batch size in the first LSTM
layer and the number of data samples is not evenly divisible by 100. You have to take care of the remainder somehow. I would recommend removing the batch size from the first layer and only entering the batch size in model.fit
. This way your model will be able to handle the remaining smaller batch(es). Here is an example:
QUESTION
I have this code to write an array to Hdf5 with HDF5Sharp. But the problem is that I need the data to be written in chunks of 1 x 100 x 500 instead of 100k x 100 x 500 and I cannot figure out how to do it.
...ANSWER
Answered 2022-Feb-07 at 10:20Not sure how this is done with the library you have indicated but with HDFql, a high-level language that abstracts you from low-level details of HDF5, your use-case can be solved as follows in C#:
QUESTION
I am working on a pretty dynamic C++ program which allows the user to define their own data structures which are then serialized in an output HDF5 data file. Instead of requiring the user to define a new HDF5 data type, I am "splitting" their data structures into HDF5 subgroups in which I store the different member variable data sets. I am interested in labeling the HDF5 group that has the subgroup members with the type of the data structure that was written to it so that future users of the data file will have more knowledge about how to use the data contained within it.
All of this context gets me to my question in the title. How reliable are demangled names? The crux of the issue could be summarized with the following example (using boost
to demangle as an example, not a necessity). If I use
ANSWER
Answered 2022-Jan-27 at 16:57The reliability of de-mangled names does not seem to be something that is well documented. For this reason, I am going to simply document the few tests that I've done on my x86_64 system allowing me to compare gcc and clang. These tests done through Compiler Explorer verifies that the returned strings for the same types are the same (including whitespace).
Maybe if I start using this in my application, one of the users will find an issue and I can update this question with another answer down the line, but for now, I think it is safe(ish) to trust de-mangling.
QUESTION
I run association rules using efficient_apriori
package in Python. I need to save results. My idea is:
- convert rules into pandas df
- save df to hdf5.
Problem is that I have 4 bilions of rules. And following code crashes on signal 9: SIGKILL
:
ANSWER
Answered 2021-Dec-16 at 09:17You can save your file in chunks instead of trying to save it all at once.
Assuming you can slice rules
as if it was a list,
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