Maptitude for Redistricting contains a DisaggregationDisaggregationThe process of apportioning data for a larger level of geography to a lower level./AggregationAggregationSumming numeric values to a larger geographic feature from a smaller feature. Wizard that takes care of all data disaggregationDisaggregationThe process of apportioning data for a larger level of geography to a lower level. and aggregationAggregationSumming numeric values to a larger geographic feature from a smaller feature.. The wizard disaggregatesDisaggregationThe process of apportioning data for a larger level of geography to a lower level. the data down to the census blockCensus BlockThe most granular and smallest geography for decennial census tabulations. In urban areas, they are similar to a street block. Census blocks are generally bounded by physical features such as roads, rivers, or power lines but can sometimes be bounded by nonphysical features such as city, county or precinct boundaries level. It then aggregatesAggregationSumming numeric values to a larger geographic feature from a smaller feature. the data up to all valid levels that you select such as tract, county and place. These levels correspond to layersLayerA group of features of the same type, such as states, highways, or landmarks that is stored in geographic files on your computer. in the mapMapA representation of an area of land or sea showing physical features (i.e. cities, roads, etc.) shown as layers..
If the data are in a geographic layerLayerA group of features of the same type, such as states, highways, or landmarks that is stored in geographic files on your computer., the layersLayerA group of features of the same type, such as states, highways, or landmarks that is stored in geographic files on your computer. can be in any format that Maptitude for Redistricting supports including Maptitude cdf and dbd, Esri Shapefile or File Geodatabase, and MapInfo Tab. The LayerLayerA group of features of the same type, such as states, highways, or landmarks that is stored in geographic files on your computer. option should be used only when the geography of the data being added does not match one of the geographic layersLayerA group of features of the same type, such as states, highways, or landmarks that is stored in geographic files on your computer. in the map (e.g., precinct data from 10 years ago when the precinct boundaries were completely different).
Disaggregating and Aggregating Data from a Table
- Start Maptitude for Redistricting.
- Click Open.
- Choose the type of file that contains your data.
- Choose the file.
- Click Open.
- Choose the map that matches the election data and click Open.
- Choose Redistricting>Plan Utilities>Disaggregate/Aggregate…
- Choose the Table option.
- Choose the table that contains your election results.
- Choose the field that identifies each unique precinct.
- Choose corresponding layer, usually a voting district or precinct layer and choose the field that uniquely identifies each feature.
- Click Next.
- Uncheck fields you do not want to include.
- Choose a weighting field for each field.
- Click Next.
- Uncheck any layers for which you do not want to aggregate data.
- Click Finish.
Once the wizard completes, you can see the appended data for any layer by opening the dataview.
Open a Dataview to Examine its Contents
- Right-click on a layer and choose New dataview.
- Scroll to the right side of the dataview to see the appended data.
Click here for information about Disaggregating and Aggregating Data from a Map Layer.