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📝 README: Add some documentation for alto4pandas

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Gerber, Mike 2022-06-21 13:12:44 +02:00
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Extract the MODS metadata of a bunch of METS files into a pandas DataFrame. Extract the MODS/ALTO metadata of a bunch of METS/ALTO files into pandas DataFrames.
[![Build Status](https://circleci.com/gh/qurator-spk/modstool.svg?style=svg)](https://circleci.com/gh/qurator-spk/modstool) [![Build Status](https://circleci.com/gh/qurator-spk/modstool.svg?style=svg)](https://circleci.com/gh/qurator-spk/modstool)
**modstool** converts the MODS metadata from METS files into a pandas DataFrame.
Column names are derived from the corresponding MODS elements. Some domain Column names are derived from the corresponding MODS elements. Some domain
knowledge is used to convert elements to a useful column, e.g. produce sets knowledge is used to convert elements to a useful column, e.g. produce sets
instead of ordered lists for topics, etc. Parts of the tool are specific to instead of ordered lists for topics, etc. Parts of the tool are specific to
our environment/needs at the State Library Berlin and may need to be changed for our environment/needs at the State Library Berlin and may need to be changed for
your library. your library.
**alto4pandas** convets the metadata from ALTO files into a pandas DataFrame.
Column names are derived from the corresponding ALTO elements. Some columns
contain descriptive statistics (e.g. counts or mean) of the corresponding ALTO
elements or attributes.
## Usage ## Usage
~~~ ~~~
modstool /path/to/a/directory/containing/mets_files modstool /path/to/a/directory/containing/mets_files
~~~ ~~~
~~
alto4pandas /path/to/a/directory/full/of/alto_files
~~~
## Example ## Example
In this example we convert the MODS metadata contained in the METS files in In this example we convert the MODS metadata contained in the METS files in
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100%|████████████████████████████████████████| 301/301 [00:01<00:00, 162.59it/s] 100%|████████████████████████████████████████| 301/301 [00:01<00:00, 162.59it/s]
INFO:root:Writing DataFrame to mods_info_df.pkl INFO:root:Writing DataFrame to mods_info_df.pkl
~~~ ~~~
In the next example we convert the metadata from the ALTO files in the test data
directory:
~~~
% alto4pandas qurator/modstool/tests/data/alto
Scanning directory qurator/modstool/tests/data/alto
Scanning directory qurator/modstool/tests/data/alto/PPN636777308
Scanning directory qurator/modstool/tests/data/alto/734008031
Scanning directory qurator/modstool/tests/data/alto/PPN895016346
Scanning directory qurator/modstool/tests/data/alto/PPN640992293
Scanning directory qurator/modstool/tests/data/alto/alto-ner
Scanning directory qurator/modstool/tests/data/alto/PPN767883624
Scanning directory qurator/modstool/tests/data/alto/PPN715049151
Scanning directory qurator/modstool/tests/data/alto/749782137
Scanning directory qurator/modstool/tests/data/alto/weird-ns
INFO:alto4pandas:Processing ALTO files
INFO:alto4pandas:Writing DataFrame to alto_info_df.pkl
~~~