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Tech Corner > Comparing Data Where VTD
Boundaries Have Changed
How do I compare election and voter registration data from different
elections where VTD boundaries have changed?
Maptitude for Redistricting now contains a Disaggregation/Aggregation
Wizard that takes care of all data disaggregation and aggregation, even
if the data are based on inconsistent geography. The wizard
disaggregates the data down to the census block level. It then
aggregates the data up to all valid levels that you select such as
tract, county and place. These levels correspond to layers in the map.
If the data are in a geographic layer, the layer can be in any format
that Maptitude for Redistricting supports including Maptitude cdf and
dbd, Esri Shapefile or File Geodatabase, and MapInfo Tab. The Layer
option should be used only when the geography of the data being added
does not match one of the geographic layers in the map (e.g., precinct
data from 10 years ago when the precinct boundaries were completely
different).
View tutorials of
Disaggregating
and Aggregating from a Table and
Disaggregating
and Aggregating from a Layer.
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