Once an Index layer is uploaded or generated directly in PIX4Dcloud, it is possible to add Field and Field boundaries to the project. This article explains how Fields and Field boundaries can be accessed and used as supporting tools to analyze multispectral data.

How to add a Field

Field: Refers to a polygon that masks the NDVI image and shows the histogram of that specific area.

To add a Field:

1. Open a project with an Index map.
2. On the left panel, in correspondence with the Overlay layer, click .
3. On the map, draw the field shape. 
4. (Optional) Modify the polygon to fit better the shape of the field. For more information: How to delete a line or polygon vertex on PIX4Dcloud.
5. (Optional) On the right panel, add Name, Description, and Tags. It is also possible to change the following settings:
   • Opacity: the opacity of the layer.
   • Histogram: set the lower and upper bounds of the histogram.

How to add a Field boundary

Field boundary: Refers to subareas (parcels) that can be grouped under the same Field since these parcels share common characteristics.

To add a Field boundary:

1. Open a project with an Index map.
2. On the left panel, select a Field.
3. To add a Field boundary:  
   • On the left panel, in correspondence with the Annotation layer, click  . Then select Add Field boundary [1], or
   • On the left panel, in correspondence with the Field layer,  click on [2], or
   • On the 2D view, click [3]. 
4. Navigate the map, zoom, and orient it to locate the area of interest.
5. On the map, draw the Field boundary.
6. The field boundary annotation shows the 2D area and 2D perimeter.
7. (Optional) On the right panel, add Name, Description, and Tags. It is also possible to change the color of the shape.
   

   

   Visualization of a Field and its Field boundaries on PIX4Dcloud.