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Update data_formats.rst #1034

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Jul 28, 2023
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Update data_formats.rst #1034

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Update data_formats.rst
GBodeker Jul 3, 2023
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Update docs/text/data_formats.rst
nils-braun Jul 28, 2023
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10 changes: 5 additions & 5 deletions docs/text/data_formats.rst
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Expand Up @@ -19,13 +19,13 @@ make up those DataFrames. Each will be described with an example from the robot

:`column_id`: This column indicates which entities the time series belong to. Features will be extracted individually
for each entity (id). The resulting feature matrix will contain one row per id.
Each robot is a different entity, so each of it has a different id.
Each robot is a different entity, so each of the set of features has a different id.

:`column_sort`: This column contains values which allow to sort the time series (e.g. time stamps).
In general, it is not required to have equidistant time steps or the same time scale for the different ids and/or kinds.
Some features might make however only sense for equidistant time stamps.
:`column_sort`: This column contains values which allows sorting of the time series (e.g. sorting by time stamps).
In general, having equidistant time steps, or the same time scale for the different ids and/or kinds, is not a requirement.
Some features, however, might only sense for equidistant time stamps.
If you omit this column, the DataFrame is assumed to be already sorted in ascending order.
Each of the robot sensor measurements have a time stamp which is used as the `column_sort`.
Each of the robot sensor measurements has a time stamp which is used as the `column_sort`.

Need only to be specified on some data formats (see below):

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