# Mapping HCP pipeline results to QuNex file hierarchy organization

````{admonition} Prerequisites
* [Running the HCP pipeline](../UsageDocs/RunningPreprocessHCP)
````

For an overview on how to prepare data and run the HCP preprocessing steps, see [Overview of steps for running the HCP pipeline](../UsageDocs/HCPPreprocessing).

Once images are preprocessed using HCP pipelines, the results need to be mapped back to the QuNex folder structure. This step is accomplished using [`map_hcp_data`](../../api/gmri/map_hcp_data.rst) command. The command uses information from the batch file and does the following:

* maps high resolution T1w image
* maps high resolution FreeSurfer aparc+aseg segmentation
* creates low resolution version (matching BOLD images) of FreeSurfer aparc+aseg segmentation
* maps 32k low resolution surface maps and generates an updated .spec file
* maps volume and grayordinate (CIFTI) BOLD images
* generates a movement correction report file

Parameters that are relevant for this step and should be set either in the command line or in a `batch.txt` file. They can be found in the [`map_hcp_data`](../../api/gmri/map_hcp_data.rst) command's online reference.