new alk.source.SubtractionLoadStrategy(opt_options)
This constructor creates a Load Strategy for a vector source that is able to subtract extents.
Given an extent it provides the extents (possibly 8 of them) as a result of subtracting any extents previously given.
Option | Type | Description |
---|---|---|
minResolution |
number |
This option specifies the minimum resolution for which the load strategy will provide extents. The number is specified in meters per pixel. |
maxResolution |
number |
This option specifies the maximum resolution for which the load strategy will provide extents. The number is specified in meters per pixel. |