The Weighted Raster Overlay Service toolbox features several tools that can help you use your raster datasets in a weighted raster overlay service.
Create a weighted overlay mosaic
A mosaic dataset stores the layers that you will use in your weighted overlay service. To build a mosaic dataset for a weighted overlay service and add your raster layers to it, use the Create Weighted Overlay Mosaic tool from the Weighted Raster Overlay Service toolbox. This tool executes the following:
- Creates a mosaic dataset with properties use by weighted overlay services.
- Adds rasters (geoTIFF) from the ArcGIS Pro Contents pane to the mosaic.
- Populates mosaic fields with information used by weighted overlay services.
Perform the following steps to create a weighted overlay mosaic.
- Add your raster datasets to ArcGIS Pro.
- Optionally, configure the symbology of each of your raster layers.
The tool reads unique value and classified symbology from each raster layer and writes that information to the mosaic dataset. If you do not set unique value or classified symbology, the tool creates equal intervals from your dataset's values and writes that information to the mosaic dataset.
- If you have not already, download and unzip the Weighted Raster Overlay Service toolbox.
- In your ArcGIS Pro Catalog pane, right-click the Toolboxes node and click Add Toolbox.
- Browse to the folder containing the Weighted Raster Overlay Service toolbox and click Add.
- In the Weighted Raster Overlay Service toolbox, double-click the Create Weighted Overlay Mosaic tool.
- In the Create Weighted Overlay Mosaic tool, choose an output file geodatabase for the Output Geodatabase parameter.
- In the Mosaic Dataset Name parameter, type a name for your output mosaic.
- Click Run.
You now have a mosaic dataset that you can share as a web layer to ArcGIS Enterprise. You can add more information to the mosaic to improve its usability in ArcGIS GeoPlanner and ArcGIS Web AppBuilder. The following section describes how to change layer titles and classifications and add preview services to your mosaic. If you don't want to add this additional information, skip to the Share your mosaic dataset as an image service section.
Define your weighted overlay mosaic
The previous workflow guided you through the creation of a mosaic dataset that you can share as a web layer to ArcGIS Enterprise. This allows you to create suitability models in GeoPlanner and Web AppBuilder. The following steps are optional, but they improve your weighted overlay services appearance and usability in GeoPlanner and Web AppBuilder.
With the Update WRO Layer Classification tool
You can change layer titles, update each layer's classification, change each classification's suitability score, and modify a classification's label using the Update WRO Layer Classification tool.
- In the Weighted Raster Overlay Service toolbox, double-click the Update WRO Layer Classification tool.
The Update WRO Layer Classification tool appears.
- In the Input Weighted Overlay Mosaic parameter, browse to the mosaic dataset you created in the previous section.
- Choose a layer in your mosaic for the WRO Mosaic Layer parameter.
- Optionally, change the title that appears in the WRO Layer Title parameter.
- The information that appears in the WRO Layer Data section controls how each layer appears in the Suitability Modeler widget in ArcGIS GeoPlanner and ArcGIS Web AppBuilder. You can make the following changes:
- In the Range Label parameter, optionally change the label that appears next to a classification in the Modeler.
- In the Min Range parameter, optionally change the minimum-inclusive value for a classification.
- In the Max Range parameter, optionally change the maximum-exclusive value for a classification.
- In the Suitability Value parameter, click the drop-down arrow and choose a suitability value for your minimum-inclusive to maximum-exclusive range that you specified in the previous two steps.
Your minimum-inclusive to maximum-exclusive range remaps to this value. You must choose a value between 0 and 9.
- 0— Exclusion of values in your minimum-inclusive to maximum-exclusive range.
- 1 through 9—These values are subjective. They can signify low to high risk, absence to presence, or low to high opportunity. All of the information you enter in the previous parameters describes this subjectivity.
Note:
The tool validates all of your minimum and maximum ranges. Validation rules are as follows:
- Ranges must cover all values in your source dataset.
- Ranges include the minimum value and exclude the maximum value. For example, for a range of 0 to 100, the classification includes all values between 0 and 100 but not 100.
- Ranges must be in sequence. If you delete or add a new range that is out of sequence, the tool fails validation.
- Ranges cannot be repeated across classifications.
The information listed in the Mosaic Layer Data section is created by the Create Weighted Overlay Mosaic tool. That tool reads unique value and classified symbology from the Contents pane and stores that information in the mosaic dataset. You can modify your symbology in the Contents pane and re-run the Create Weighted Overlay Mosaic tool to create new or change existing classifications that appear in the Modeler.
- Click Run.
The layer's classification is updated in your mosaic dataset.
With the Update WRO Layer Info tool
You can also change a layer's description, preview URL, informational URL, and NoData value and label within the mosaic dataset. The following steps are optional, but improve your weighted overlay service's appearance and usability in ArcGIS GeoPlanner and ArcGIS Web AppBuilder.
- In the Weighted Raster Overlay Service toolbox, double-click the Update WRO Layer Info tool.
The Update WRO Layer Info tool appears.
- In the Input Weighted Overlay Mosaic parameter, browse to the mosaic dataset you created in the previous section to a mosaic section.
- Choose a layer in your mosaic for the WRO Mosaic Layer parameter.
- Optionally, type a title in the WRO Layer Title parameter.
- Optionally, type a description in the WRO Layer Description parameter.
The description displays as an informative pop-up in the weighted overlay service when the service is accessed from ArcGIS GeoPlanner or ArcGIS Web AppBuilder.
- Optionally, type a URL to a hosted image layer in the WRO Layer Preview URL parameter.
The layer displays as a preview button in the weighted overlay service when the service is accessed from ArcGIS GeoPlanner or ArcGIS Web AppBuilder. Use this parameter to provide preview functionality for the raster layers in your weighted overlay service's mosaic dataset. You must share each raster layer that you want to preview as an image service.
- Optionally, type a URL to an informational web page about this layer in the WRO Layer Informational URL parameter.
Use this URL for metadata or as a way to provide useful information about this layer.
- Optionally, type a NoData value in the WRO Layer NoData Value parameter.
This value is considered NoData in your raster layer.
- If you set a value in step 8, type a label for that value in the WRO Layer NoData Label parameter.
- Click Run.
The layer's information is updated in the mosaic dataset.