---
title: TDEI Data Viewer User Manual
nav_order: 1
tags:
    - User Manual
    - External
    - User
---

<!-- @format -->

## TDEI Data Viewer User Manual

This user manual describes the TDEI Data Viewer interface for browsing public project groups, released datasets, mapped features, and issue-reporting controls.

_For a list of all guides on the TCAT Wiki, refer to the [Guides List](../../../guides-list/index.md)._{ .guides-list-ref }

---

### About the TDEI Data Viewer

The [TDEI Data Viewer](https://dataviewer.tdei.us/) presents public TDEI project groups and their released datasets. Project group pages combine dataset search with a map, while each dataset has a map view with boundary controls, a feature-type legend, and feature details.

![TDEI Data Viewer map showing property values for a hovered sidewalk feature](../../../resources/images/tdei/data-viewer/user-manual/01-index/map-feature-hover-details-light.avif#only-light)
![TDEI Data Viewer map showing property values for a hovered sidewalk feature](../../../resources/images/tdei/data-viewer/user-manual/01-index/map-feature-hover-details-dark.avif#only-dark)

---

### Table of Contents

TDEI Data Viewer User Manual Table of Contents

#### [Project Groups and Datasets](project-groups.md)

This section describes the project group list, group summaries, dataset cards, and name-based search in the TDEI Data Viewer.

#### [Maps and Dataset Features](maps.md)

This section describes the group map, dataset map view, map controls, feature legend, and map-based feature details.

#### [Feature Inspection and Feedback](feature-inspection-and-feedback.md)

This section describes the Inspect panel and the information shown in the issue-reporting form.