# Inventory Table

## Table

The data collection table is an essential tool for managing the data collected from inventory tools or imported into the application. This table groups various information such as measurements, annotations, polylines, and points. Each table entry is identified by the collection date, an identification name associated with the data, along with additional information and a note for better context understanding. An important feature of the inventory table is the ability to select one or more entries for deletion if necessary.

**Data Import**

Jakartowns allows you to import your own inventories for visualization and use within the application.

Jakartowns supports the following formats:

* Shapefile format (.shp):

  The files, including `.shp`, `.dbf`, `.prj`, etc., must be within a `.zip` file.
* geojson format (.geojson)

To access this feature, you can find a button located in the top right of the inventory table, allowing you to import your inventory data into Jakartowns.

When imported records are in 2D (xy only), the elevation of the entities will be automatically determined using the elevation of the nearest panoramic image. The approximated elevation will be close to ground level.

<figure><img src="https://github.com/jakarto3d/docs-gitbook/blob/main/space-jakartowns/en/.gitbook/assets/Importation2.png" alt=""><figcaption></figcaption></figure>

## Coordinate System

The imported inventory will be reprojected into the coordinate systems used by Jakartowns.

### Vertical Datum

By default, Jakartowns uses the Canadian Geodetic Vertical Datum of 2013 (CGVD2013) in Canada. Imported 3D entities must be in this coordinate system; otherwise, shifts may occur. (Note: if a shift of about \~30cm is present, ensure that the imported inventory is not in CGVD28)

## Performance

To mitigate performance and usability issues with large imports, a limit of 2500 entities per import is enforced.

Lastly, Jakarto is not responsible for the accuracy of the observed data or the transformations applied.

**Data Export**

The application allows exporting the created inventory in various formats, such as Shapefile (.zip), GeoPackage, GeoJSON, CSV, PNEZD. These options facilitate the use and visualization of the data in different Geographic Information Systems (GIS) and also allow sharing of this data with other users or between different systems.

To access this feature, you can find a button in the top right of the inventory table, allowing you to export your inventory data in the desired formats.

<figure><img src="https://github.com/jakarto3d/docs-gitbook/blob/main/space-jakartowns/en/.gitbook/assets/Exportation2.png" alt=""><figcaption></figcaption></figure>


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