[Talk-us-massachusetts] Plymouth Import Test

[Alan & Ruth Bragg]

Recently, a very active OSMer from Plymouth contacted me. He's trying to
update Plymouth for the upcoming 400 year celebration.
He's corrected street name per Yury's report and I ran a test "Phase 1"
import using a my OSM import account using only JOSM tools.
Phase 1 only includes addr:housenumber and addr:street and only adds them
to buildings that have no address data.

The import added about half of the 30k+ possible addresses in Plymouth. We
are double checking the results now and are assessing Yury's new street
name analysis.

Here's an excerpt from the wiki that describes what was done
Phase 1 - Low Risk Import

Under Phase 1, we seek to import entries with the least chance of
ambiguity, error, or conflict. The following tags and limitations would be
used:

   - *Only STATUS=ACTIVE;LINKED;MODIFIED* - Other statuses could pose
   potential conflicts that will require manual review later.
   - *Only POINT_TYPE=BC* - This filters only to points located directly on
   top of the building polygon's centroid. There is no ambiguity which
   building the address node applies to.
   - *No UNIT=** - Individual addr:unit numbers are not within the scope of
   this import.
   - *addr:housenumber=FULL_NUMBE* - This data should include forms of
   integers, alphanumeric, and numerals separated by hyphens to denote range
   data. The data is directly compatible with OSM's tagging.
   - *addr:street=UL_STREET_* - The streetnames have been converted from
   uppercase, and have been checked for accidental double capital erasure.
   JOSM Validation will verify.
   - *No addr:city* - (an optional attribute in OSM)
   - *No addr:state* - (an optional attribute in OSM)
   - *No addr:postcode* - (should come from post office source)
   - *type:way building=** - (to avoid multi-polygons)
   - *No duplicate address nodes*, deleted via JOSM validation.
   - *No changing existing OSM addresses,* only add addresses to buildings
   that do not have addresses .
   - *No cities like Barnstable with it's many major villages*. Town/City
   selection will be a manual process of reviewing the number of differences
   in a file between COMMUNITY_, GEOGRAPHIC, and PC_NAME, and flagging files
   with problematic town administrative levels for further review.
   - There should not be multiple points on top of a centroid in this
   import stage, but should this arise, we will leave the points conflicting
   unimported, or give the importing party discretion to merge the data if it
   seems reasonable to do so.



Alan
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