What is the layer type used for in vMAP?

Layer type is the template of a layer, which defines the data fields of the points/lines/polygons on the layer. After the layer type is created, you can quickly create more layers with the same layer type for further operations, such as layers with same fields from imported dataset. 

In order to display the spatial data with matched fields in vMAP Portal (front end), you need to configure the layer type before importing data into layers and creating mapviews. 



How do I configure a layer type?

You can configure a layer type by following operations:

Create a new layer type

Click on the  button towards the bottom of the Layer Type panel to open the New Layer Type window. Input a name for the Layer Type, click on the  button. It will be listed in the Layer Type panel to the left.

Edit a layer type

1. Edit the layer type name

Select a layer type from the list in the Layer Type panel to the left, its detailed information will then be displayed in the panel to the right. You can edit the layer type name, and click on the  button to save the changes.

2. Edit the Field name

Click on the  tab in the right panel, then all fields of the selected layer type will be displayed below. Click on the  button to open the New Field window. Input a Field Name and select the GC Field and Geo Type, and click on the  button to add the field to the list.

GC Field: Geometry composition field, which means the data type of the field, e.g. number, date, text, string etc. The value must be unique. 

Geo Type: Geometry type, e.g. point, polygon or line.

To edit the fields, double click on the field and input a value. After editing, click  to save the changes.

3. View the layer information

Click on the  tab  on the panel to the right, to display all the layers belonging to a selected layer type. This operation is read only.

Delete a layer type

To delete a layer type, click on the layer type name from the list on the Layer Type panel to the left, then click on the  button.

Note: In order to delete one layer type, you need to delete all the layers which belong to this type, or change their layer type first.