I have precinct geography that does not follow block boundaries.
How can I create Block Pieces that can be used as a basis for my new
You can use the
utilities in MTP&E to assist you in creating block pieces by making some
simple changes to the P&E Settings.
Prepare Block Layer and add it to the Precinct Map
- Choose P&E Mgt-Precinct Map to open your Precinct map.
Map-Layers and check to see if the layer Census Blocks appears
in the list. If it does not, add
- Once the layer is added click Close.
- Change the working layer to Census Blocks.
- If you are updating voter counts, you should add a field to the
Census Block layer that has the same name as the field identified in the
Voter Counts tab.
For more information about Adding a layer to a map, see "To Add Layers to a
Map" in Chapter 4, Layering Features on a Map, in the Maptitude
User’s Guide. For more
information on adding a field to a layer, see "Modifying the Structure of a
Table" in Chapter 9, Managing Data Tables, in the Maptitude User’s
Guide. To incrementally fill in
the record Ids, see "Filling a Range of Cells or Groups of Columns with
Data" in Chapter 8 of your Maptitude User’s Guide.
Identify Census Blocks as Ballot Styles in P&E Mgt-Settings
P&E Mgt Settings to
display the P&E Mgt Settings dialog box.
Click the Ballot Styles tab to display the Ballot Styles page.
- Click Add to
display the Choose Layer to Add dialog box.
- Choose the layer
Census Blocks from the drop-down list.
- Click OK.
Maptitude P&E adds the layer to the list of layers
- Click on Census
Block, and choose the field BLK from the Name Field drop-down list.
Create Block Pieces
Now that the Census
Blocks layer has been identified as a ballot style layer, you can have MTP&E
automatically create block pieces. To
do this you should:
P&E Mgt-Update Ballot Styles.
Maptitude P&E displays the Update Ballot Styles dialog box.
- Click the
Choose button and browse to the directory where you want to save
your block pieces. Type in the
name Block Pieces and click OK.
- Highlight Census
Blocks in the Layers list.
- Choose any attributes, in addition to number of registered voters,
that you want to include in the ballot styles layer. First, select the
layer from the Layer drop-down list. Then select the field or fields
from the Fields list.
|To do this...
||Select the layer containing the
field from the Layer drop-down list
|Add a field to
the Fields list
||Click Add, choose the field
from the drop-down list, and click OK
|Remove a field
from the list
field in the Fields list, and click Drop
Maptitude P&E creates or updates the ballot styles layer. If the ballot
style layer is not already part of the map, Maptitude P&E adds it to the
Export Block Pieces to a
Compact Geographic File that can be used in a redistricting plan
final step of this procedure is to export the new block pieces to a compact
geographic file (.cdf) that can be used as the base layer in a redistricting
Make Ballot Styles the working layer.
Choose Compact Geographic File from the To drop-down list.
Browse to the directory where you want to save the file and name the new
file XXXXBlockPieces (where XXXX is the year of the precincts).
You have now created a layer that can be used as a base layer in a
redistricting plan to create new precincts.
Back to Tech Corner Support Page