Specify how often Infrastructure Studio should re-sample the raster image data after zooming in. To understand how the zoom rebuild factor works, suppose the value is set to 3 and the Viewer is displaying a map that is 300x200 pixels. Assume that the source of the raster image layer is 3000x2000 pixels in size. The first time the Viewer displays the map, the application makes a request to the server to resample the entire raster image to a resolution of 300x200 pixels. The Viewer displays and scales this resampled image locally until the user has zoomed in by a magnification factor of 3. At that time, the application issues another request to the server to re-sample a smaller subset of the original raster image to a resolution of 300x200 pixels. Again, the Viewer displays and scales this re-sampled image locally as zooming continues, until the user zooms in another 3 times.
To specify the zoom rebuild factor
- Open the layer to edit by doing one of the following:
- Create a new layer.
- Double-click an existing layer.
- Click the layer’s tab if the layer is already open.
For information about creating a new layer, see Creating New Resources. For information about associating a data resource with a new layer, see Specifying the Data Resource for a Layer.
- In the Rebuild Layer After Zooming By A Factor Of box, enter a magnification factor.
This number must be an integer.
- Click File menu
Save.