> For the complete documentation index, see [llms.txt](https://docs.openbrim.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.openbrim.org/templates/concrete-box-girder-bridge-workflow/gis-cbg/2d-map-cbg.md).

# 2D MAP \[CBG]

![](https://openbrim.atlassian.net/wiki/download/attachments/2397896705/image-20240102-185459.png?api=v2)

* **Latitude & Longitude:** Latitude and Longitude of the Map's Center. You can use Google Maps and obtain the data by right-clicking on any location.

![](https://openbrim.atlassian.net/wiki/download/attachments/2397896705/image-20240102-183821.png?api=v2)

* **Elevation:** Since the map is 2D, elevation is based on user input. You can use the bottom elevation of the piers to display the map close to your bridge.
* **Width & Height:** Input the width and height dimensions for the map area covered by the tiles. It's expected to enter a value larger than the bridge area. Ensure that the resolution, width, and height parameters are correctly utilized to avoid exceeding the maximum tile limit of 1000.
* **Resolution \[Level 1 - Level 7]:** Level 1 offers the lowest resolution, while Level 7 provides the highest resolution available for the tile images. Using a lower resolution results in fewer tiles being needed to cover the same area.
* **Map Type \[Roadmap/Satellite/Terrain]:** Various types of image tiles can be used. Roadmap tiles are based on vector topographic data and feature Google's cartographic styling, including roads, buildings, points of interest, and political boundaries. Satellite image tiles, on the other hand, are a form of orthophotography, capturing top-down views of the Earth using satellite and airborne cameras. Lastly, Terrain tiles incorporate hillshade mapping and contour lines, highlighting natural features such as vegetation.

![](https://openbrim.atlassian.net/wiki/download/attachments/2397896705/image-20240102-184637.png?api=v2)

![](https://openbrim.atlassian.net/wiki/download/attachments/2397896705/image-20240102-184748.png?api=v2)

![](https://openbrim.atlassian.net/wiki/download/attachments/2397896705/image-20240102-184758.png?api=v2)

{% hint style="warning" %}
After entering all the parameters for the map, ensure that the Alignment Latitude and Longitude data are also inputted. If there is more than one alignment, it's possible to assign a local origin to the start location of one of these alignments by using Set Prj Local Origin to Alignment Lat & Lng cell action.
{% endhint %}

![](https://openbrim.atlassian.net/wiki/download/attachments/2397896705/image-20240102-185230.png?api=v2)


---

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