# Creating and Editing Data

## Create an Empty Dataset

- Click on `Add Resource > create dataset`

    ![image](./img/create_dataset_link.png)

- Fill the form with some values; first of all insert a `name` and `title` and select `Polygon` as `geometry type`
- Add three `attributes` and click the `Create` button

    - `label`: `String`
    - `value`: `Float`
    - `date`: `Date`

    ![image](./img/create_dataset_1.png)

- GeoNode will create the new empty dataset with the selected `geometry type` and `attributes` and will redirect you directly to the detail page

    ![image](./img/create_dataset_2.png)

## Edit the Dataset Data

- Click on `Edit > Edit Data`

    ![image](./img/edit_data_link.png)

- Click on the `pencil` to enter the `edit mode`

    ![image](./img/edit_data_1.png)

- Click on the `add New Feature` button

    ![image](./img/edit_data_2.png)

- Click on the `pencil` again

    ![image](./img/edit_data_3.png)

- Draw a small `polygon` over the `dataset` and click on the `floppy disk` button to save

    ![image](./img/edit_data_4.png)

- Double-click on the `attributes table` columns to enable the `edit mode` on the values

    ![image](./img/edit_data_5.png)

- Insert some values as shown below; **the date-time attributes must be provided in ISO format**

    ![image](./img/edit_data_6.png)

- Save and repeat the operation as many times you want
- Once finished, go back to the dataset detail page; you will notice that GeoNode will show some features, but the bounding box is still the whole world; **remember to clean the image cache of the browser to show the new features**

    ![image](./img/edit_data_7.png)

## Update the Dataset Bounding Box

- Logout and login again as an `admin`; from the context menù, click on `GeoServer`

    ![image](./img/edit_data_8.png)

- If you are still logged in as `test_user1` on GeoServer, follow the steps below

    ![image](./img/geoserver_logout_1.png)

    ![image](./img/geoserver_logout_2.png)
    
    ![image](img/136796188-0264d2b3-1412-4767-819d-8a88fd24658c.png)

    ![image](img/136796221-0e629dca-5eb7-449d-b8de-d4b8ab6b1ba1.png)

- Go to the GeoServer `Data > Layers` section

    ![image](img/136796292-4d19bb41-b33b-4179-bee0-1b8161124e3e.png)

- Select and click on the `Test layer` you just created

    ![image](img/136796367-c7851e93-fdb3-4ac7-83b7-dd8a051ddd7a.png)

- Scroll down to the `Bounding Boxes` section, update them as shown in the figure, and `Save`

    ![image](img/136796467-957ec721-2266-4477-9372-b792a92f41eb.png)

- In order to allow GeoNode getting the updated `bbox` you can either:

    1. Edit the Metadata again and just click on the `Update` button

    2. Running the `updatelayers` management command from the `Python shell`

        - Open a new `terminal` window and move to `/opt/geonode`
        - Run the following commands

        ```shell
        cd /opt/geonode/
        workon geonode
        ./manage_local.sh updatelayers -f test_layer
        ```

- Go back to `Test layer` detail page and refresh now the dataset will be zoomed on the right location

## Delete Data

- Enter the `Edit Data` mode again

- Select (click over) a polygon and click on the `Trash Bin` icon

    ![image](./img/edit_data_11.png)

- Confirm the deletion and verify the polygon disappeared from the map

    ![image](./img/edit_data_12.png)

- Go back to the dataset details page, **refresh the browser image cache**, and verify the feature is not present anymore

## Refresh the Thumbnail

- You can refresh the thumbnail of the dataset by clicking `Edit` > `Edit Info` an then ![image](./img/set_thumb_from_map.png) in the current thumbnail.

- Click `Apply` to set the thumbnail to the current dataset preview.

    ![image](./img/edit_data_13.png)
    

#### [Next Section: Downloading, Replacing, Appending Data](REPLACE_LAYERS.md)