- Filters for Create Buffer

Spatial Filter can be used to buffer the feature instances within a specified spatial extent.

1. In Map Manager, right-click on the Layer name and select the Buffer item. The Create Buffer dialog Opens. Click on the Spatial Filter tab to limit the spatial extent of the buffer.
2. You can choose only one option at a time from the following:

• None : This option is Selected By Default. Buffers all the feature instances.
• Fence: This option is activated if a fence is placed. Only buffers feature instances within the fence.
• Selection Set: This option is available if selection set is active. Only buffers feature instances in the selection set.
• View : You can choose from the existing Views. Only buffers feature instances in that view.

Data Filter is used to buffer feature instances that meet certain criteria.

1. In Map Manager, right-click on the feature> Buffer > Create Buffer Window Opens> Click on Data Filter tab to limit the buffer based on specific criteria.
2. Once you the specify a criteria, only the features that meet this criteria will be buffered.

 Please refer to the following link for additional information on buffer tool in OpenCities Map:

Creating Buffers