> For the complete documentation index, see [llms.txt](https://support.senterasensors.com/home/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.senterasensors.com/home/fieldagent-mobile-ios/60-second-guides/weeds-ground-truthing.md).

# Weeds Ground Truthing

Learn how to capture points and images for your field.

***

## Motivation

I want to record the locations of weeds in my field and attach images to those points.

***

## Requirements

* You should thoroughly review the [Ground Control Points](/home/fieldagent-mobile-ios/60-second-guides/ground-control-points.md) guide first.
  * This guide builds on capturing GCPs.
* You must have [Trimble Mobile Manager](/home/fieldagent-mobile-ios/60-second-guides/trimble-mobile-manager.md) and your DA2 configured.
* When uploading, you should be connected to WiFi for best results.

{% hint style="success" %}
The resulting feature set will be attached to the field you have selected.

The app will calculate an offset of `-2.0m` for all points to offset your survey rod.
{% endhint %}

***

## Steps

From the Home Screen:

1. Tap on your field.
2. Tap on the Points button.
3. Tap on the + button on the top left.
4. Tap on Weeds Ground Truthing.
5. Move your DA2 over the point you wish to record.
6. Wait for the app to report `0.01 m` accuracy and for the Current Location to display a <mark style="color:green;">**green**</mark> status.
7. Tap Save Location.
8. Snap a photo using your mobile device.
9. Repeat until all the points have been surveyed.
10. Tap the Save button on the top right.
11. Confirm by tapping on Save.

{% hint style="success" %}
The app has saved the data locally to your Apple Device.&#x20;

You can either upload later or start the upload now.
{% endhint %}

From the Field Point Details screen:

1. Tap the Upload button.
2. Verify your network connectivity by reviewing the network indicators.
3. Tap the Upload button to start processing.

Once the upload has been completed, tap the Done button to return to your Field Point List.

***

If you want to see a preview of the process, please review the [Ground Control Points](/home/fieldagent-mobile-ios/60-second-guides/ground-control-points.md) guide for more details.


---

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