Raster Analytics allows you to perform analysis of large raster datasets across an ArcGIS GeoAnalytics Server. This allows you to analyze more data faster, by harnessing the power of multiple machines. The toolsets and tools currently available through the Portal Web UX are:
Summarize Data
These tools calculate some statistics for a raster layer within area boundaries that you define.
- Histogram Raster Within creates a histogram of the distribution of cell values within zones defined by another dataset.
- Summarize Raster Within calculates statistics for raster cells that fall within defined area boundaries.
Summarize Raster Within |
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Calculates some summary statistics for raster cells within defined areas.
Some example applications are:
- Given a layer of watershed areas and an elevation raster layer, calculate the range of elevations within each watershed in order to determine which ones will have the highest energy streamflow.
- Given a layer of administrative management units and a raster of layer of land use categories, calculate the variety of land use values within each management area to identify the ones that will require the most work to come up with a management plan.
Analyze Patterns
These tools help you identify, quantify, and visualize spatial patterns in your data.
- Calculate Density takes known quantities of some phenomenon and spreads these quantities across the map.
- Interpolate Points predicts values at new locations based on measurements found in a collection of points.
Calculate Density |
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Density analysis takes known quantities of some phenomenon and spreads these quantities across the map. You can use this tool, for example, to show concentrations of lightning strikes or tornadoes, access to health care facilities, and population densities.
Interpolate Points |
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This tool allows you to predict values at new locations based on measurements found in a collection of points. The tool takes point data with values at each point and returns areas classified by predicted values. You can use this tool, for example, to predict rainfall levels across a watershed based on measurements taken at individual rain gauges.
Analyze Image
The following tool helps you analyze images to determine areas with vegetation.
Monitor Vegetation |
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Detects vegetation through many different indices.
Analyze Terrain
These tools help you analyze raster surfaces.
- Calculate Slope to find which parts of the terrain are the steepest.
- Derive Aspect to determine which areas of the terrain are south-facing.
- Create Viewshed to identify what can be seen from any point on the landscape.
Calculate Slope |
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Identifies a surface that shows the slope of the input elevation data. Slope represents the rate of change of elevation for each digital elevation model (DEM) cell.
Derive Aspect |
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Identifies the downslope direction of the maximum rate of change in value from each cell to its neighbors. Aspect can be thought of as the slope direction.
Create Viewshed |
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Determines the locations on a raster surface that are visible to a set of observers.
Manage Data
These tools are used for both the day-to-day management of geographic data and for combining data prior to analysis.
- Extract Raster to clip out portions from a raster dataset for further analysis.
- Remap Values to assign different values to raster cells.
- Convert Feature to Raster to perform raster analysis on feature data.
- Convert Raster to Feature to vectorize raster data.
Extract Raster |
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Extract cells from a raster based on value, shape or the extent of a different dataset.
Remap Values |
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Change the individual or ranges of cell values to new values.
Convert Feature to Raster |
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Create a new raster dataset from an existing feature dataset.
Convert Raster to Feature |
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Create a new feature dataset from an existing raster dataset.