Create and populate a mosaic dataset with CIB and lower resolution image data.
- Open ArcMap.
- Set raster file format search mode to use file extensions.
- Create a file geodatabase.
- Create a mosaic dataset.
- Add CIB datasets to the mosaic dataset.
- Add lower resolution imagery to the mosaic dataset.
- Calculate mosaic dataset cell size ranges.
- Run the Calculate Raster Visibility model tool in the template toolbox to calculate cell size ranges on the mosaic dataset; use the default High Pixel Size Multiplier value (in most cases, this is sufficient).
- Build the mosaic dataset boundary.
- Modify the default properties on the mosaic datasets.
- Maximum Number of Rasters per Mosaic: Because of the characteristics of CIB data, the default value of 20 for the maximum number of rasters that are dynamically mosaicked is not always sufficient to provide total screen coverage for any one particular CIB product; increasing this value to 50 is generally sufficient.
- Maximum Number of Items Downloadable per Request: Because it is recommended to store multiple CIB products within a single mosaic dataset, chances are good that users will typically exceed the default value of 20 even when selecting seemingly small areas. Modify this property to best balance the needs of your users and the performance load on your servers.
- Maximum Download Size per Request (MB): Used in conjunction with the Maximum Number of Items Downloadable per Request property, this property defines the maximum size limit that a user can download. Modify this property as required.
- Define overviews.
- Run the Define Overviews tool on the mosaic dataset using an appropriate Pixel Size value for your imagery.
- Run the Build Overviews tool to build overviews on the mosaic dataset.
Set the Search Mode to Search only files that match the following file extensions to find valid raster formats. Ensure that all format entries that start with "CIB" are checked, as well as the file extensions for your lower resolution image data. See Displaying specific raster formats for more information.
Run the Create CIB Mosaic Dataset tool in the template toolbox to create a mosaic dataset in the new file geodatabase. Set the Coordinate System parameter on the tool to WGS_1984_Web_Mercator_Auxiliary_Sphere. This is the same coordinate system used by Esri online services
Run the Add CIB Rasters To Mosaic Dataset tool in the template toolbox to add CIB data to the mosaic dataset.
When you work with world-wide data, it is very useful to orient yourself on the map when zoomed out to continental and global scales. While it is possible to build overviews on the CIB 10 meter data, which is the lowest resolution CIB data; it does not display well because the data has to be highly resampled to display at these smaller scales. A much better approach is to add imagery that was designed for these smaller scales to the mosaic dataset, and build overviews on the lowest resolution data that was added.
Run the Add Rasters To Mosaic Dataset tool to add lower resolution imagery to the mosaic dataset.
The cell size range is used to control which rasters in a mosaic dataset are processed to create the dynamically mosaicked image that is displayed. This behavior is controlled by the minimum and maximum pixel size values on each record in the mosaic dataset (MinPS and MaxPS fields respectively).
You could use the Calculate Cell Size Ranges tool, which examines the spatial relationship between rasters to determine the MinPS and MaxPS values. However, in the case where you need to calculate these values on large volumes of datasets, it can be more efficient to calculate these values based on a multiplier of the pixel size; a tool named Calculate Raster Visibility has been included in the template toolbox to calculate these values based on this alternate approach.
The boundary determines the spatial extent of the mosaic dataset and can be used to clip the mosaicked image, i.e. only raster data that is contained within the boundary will be visible. The boundary is created using the Build Boundary tool or as an option when using the Add Rasters to Mosaic Dataset tool.
By default, the boundary is created by merging all raster footprints into a single or multipart polygon, which can result in a boundary with a large number of vertices affecting draw performance.
Run the Build Boundary tool with the Simplification Method set to ENVELOPE on the mosaic dataset.
Properties can be set on the mosaic dataset that affect how the mosaicked image will be presented to the user, and how they might interact with it. These properties can also impact the performance of the server or image service if the mosaic dataset is published as an image service. See Mosaic dataset properties for more information.
At a minimum, modify the following properties on the mosaic dataset:
You will be publishing the mosaic dataset as a cached image service, which doesn't require overviews to be generated. However, since cached image services can be accessed dynamically, you can build overviews so the data will display at smaller scales when the service is accessed dynamically.
See Mosaic dataset overviews for more information.
The Pixel Size parameter defines the raster pixel size of the first overview level and is in the same spatial reference units as the mosaic dataset, which in this case is meters. Set the Pixel Size parameter value that is between the MaxPS and the HighPS field values of the lowest resolution imagery in the mosaic dataset.