.. _ngw-node-hdfExtractColumn:

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hdfExtractColumn
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Description
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Extract a column from a specific HDF dataset inside a given HDF file.

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Properties
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- **datasetPath**: The full path to the dataset within the HDF file, beginning with a "/".
- **rowIndex**: The 0-based index of the column.

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Input Ports
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- **stdin**: A file reference to the HDF file to read.

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Output Ports
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- **stdout**: The data column extracted from the HDF dataset.