~~NOTOC~~
===== IMPORTANT NOTE =====

All ATLAS documentation has moved to [[https://github.com/OHDSI/ATLAS/wiki|GitHub]]. Please disregard the content below as it is legacy and kept for posterity.

======Data Sources (LEGACY)======
----

Atlas now provides the ability to review descriptive statistics about an OMOP CDM. This functionality was originally built by as part of the [[http://www.ohdsi.org/web/wiki/doku.php?id=documentation:software:achilles|Achilles working group]]. 

===== Prerequisite Setup =====

You must install Achilles in order to use this feature in Atlas. See the [[http://www.ohdsi.org/web/wiki/doku.php?id=documentation:software:achilles#installation_and_support|installation and support]] for more details.

===== Navigating Reports =====

In Atlas, select the **Data Sources** menu item. Next select a data source to use for exploring the database characterization reports: 

{{ :documentation:software:atlas:atlas_data_sources_select.png?direct |}}
Next, use the second drop down to explore reports for the selected data source:
{{ :documentation:software:atlas:atlas_data_sources_report.png?direct |}}
Certain reports provide a treemap/table view with a capability to drilldown into details for a concept. For example, the condition report provides the treemap view as a default:
{{ :documentation:software:atlas:atlas_data_sources_treemap.png?direct |}}
Use the tabs to select the 'table' option to view a tabular display of the concepts represented in the treemap:
{{ :documentation:software:atlas:atlas_data_sources_table.png?direct |}}
You can filter the results shown above by using the 'Search:' in the upper-right hand corner of the table display. Once you have a concept of interest, you can drill down by clicking on the row in the table (or a cell in the treemap) to reveal further details:
{{ :documentation:software:atlas:atlas_data_sources_drilldown.png?direct |}}