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Update episodes/06-raster-intro.md
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Co-authored-by: Ou Ku <33962195+rogerkuou@users.noreply.github.com>
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fnattino and rogerkuou committed Jul 25, 2023
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- Visualize single/multi-band raster data.
:::

Raster datasets have been introduced in [Episode 1: Introduction to Raster Data]({{site.baseurl}}/01-intro-raster-data). Here, we introduce the fundamental principles, packages and metadata/raster attributes for working with raster data in Python. We will also explore how Python handles missing and bad data values.
Raster datasets have been introduced in [Episode 1: Introduction to Raster Data](01-intro-raster-data.md). Here, we introduce the fundamental principles, packages and metadata/raster attributes for working with raster data in Python. We will also explore how Python handles missing and bad data values.

[`rioxarray`](https://corteva.github.io/rioxarray/stable/) is the Python package we will use throughout this lesson to work with raster data. It is based on the popular [`rasterio`](https://rasterio.readthedocs.io/en/latest/) package for working with rasters and [`xarray`](https://xarray.pydata.org/en/stable/) for working with multi-dimensional arrays.
`rioxarray` extends `xarray` by providing top-level functions (e.g. the `open_rasterio` function to open raster datasets) and by adding a set of methods to the main objects of the `xarray` package (the `Dataset` and the `DataArray`). These additional methods are made available via the `rio` accessor and become available from `xarray` objects after importing `rioxarray`.
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