Editing Layer Data

There are two approaches to modifying existing layer data: using the Edit Map interface or the spreadsheet export/import workflow.

Method 1: Using the Edit Map (Annotate)

This is the quickest way to update individual features:

1. From the Admin Console, click the "annotate" link for the layer you want to edit
2. This opens the Edit Map interface for that layer
3. Draw the updated geometry (point, line, or polygon depending on the layer type)
4. Fill in the property values in the control fields - use the same identifying values as the feature you're replacing
5. Click Save to submit

The new feature will be processed as an update to the existing data.

Best for: Quick updates to individual features, geometry corrections, adding new features

Method 2: Using Spreadsheet Export/Import

For bulk edits or when you need to modify many features at once:

1. Export the layer data
2. From the Admin Console, find the layer in the "Layers" section

3. Click the "Export to Sheet" link to export to Google Sheets

4. Edit the data

5. Modify property values directly in the spreadsheet cells
6. Add new rows for new features

7. Delete rows to remove features

8. Re-import the data

9. Use the "Import from Sheet" function in the Admin Console

Best for: Bulk text changes, fixing typos across many features, deleting multiple features

Deleting Features

• Single feature: Use the spreadsheet method - export, delete the row, re-import
• Multiple features: Use the spreadsheet method for efficiency
• Geometry-based deletion: Edit the GeoJSON directly in QGIS, then upload via Edit Map

Tips

• Always export a backup before making bulk changes
• Changes won't appear on published maps until the atlas is re-published
• For geometry changes that require precision, editing in QGIS and uploading the GeoJSON provides the best tools