Analyzer package for Qass Tools

This package contains python modules that can be used to interact with the Analyzer4D software or with the data it produces.

It provides:

• A parser for the files containing the measurement data by the Analyzer4D
• An index to query for measurement data
• A database abstraction for the Analyzer4D
• Abstractions for modules available in the operator network of the Analyzer4D

Check out the documentation!

Installation

Just install using pypi.

pip install qass-tools-analyzer

Or install as a developer. Having the working directory of your terminal in the repository folder:

pip install -e .

Examples

Read Buffer files

In the example we provide the path to a buffer file to the Buffer class and use the with-statement to open it to read the process number.

from qass.tools.analyzer.buffer_parser import Buffer

buffer_file = "path/to/my/buffer_file"
with Buffer(buffer_file) as buff:
   print(buff.process)
   data = buff.get_data() # this is a numpy array

Query Buffer files

In this example we create an instance of the cache and synchronize it with the directory my/directory. We then create a template BufferMetadata object and use it with the cache to query for all buffers with a compression_frq = 8. You can use all properties that are in BufferMetadata.properties. The BufferMetadataCache.get_matching_buffers() method returns a list of Buffer objects that are in this case sorted by their process number (as specified in the sort_key).

from qass.tools.analyzer.buffer_metadata_cache import BufferMetadataCache as BMC, BufferMetadata as BM, select

cache = BMC()
cache.synchronize_directory("my/directory")

results = cache.get_matching_buffers(query=select(BM).filter(BM.compression_frq==8).order_by(BM.process))