Split / Divide large polygon with point shapefile

[GarrettRoss]

I have a large polygon shapefile that represents streets and a large point shapefile that represents intersections.
Is there a way to split the polygon shapefile at each intersection point?
[ATTACH=CONFIG]29493[/ATTACH]

[GarrettRoss]

I do have a road segment polyline file but no width data included.

[michaelcollins1]

looks like they might have used a distance to polygon type of thing using the polygons between the roads, then used the resultant lines to cut the roads

[Zeke]

Could you use the streets as lines in the Create Polygons tool? This might result in some extra polygons, but less manual work than other approaches. This seems too easy though, I must be missing something.

[michaelcollins1]

I recall using a tool a couple of years ago (it escapes me now) that took a point file, and created a shape file layer of polylines that gave minimum distances from each point to each polygon in the other layer (in this case the polygons between the road polygons).

This looks like what was done here, but delete any polylines with length greater than the road width, and use that polyline shape file to cut the road polygons.

[GarrettRoss]

I would have thought there would be a tool out there somewhere, I have seen other files from other agencies that where done this same way while searching for a solution but no one will let me in on the "secert".:)

[GarrettRoss]

"secret".:)

[michaelcollins1]

pssst...hey bud...

I recall using a tool a couple of years ago (it escapes me now) that took a point file, and created a shape file layer of polylines that gave minimum distances from each point to each polygon in the other layer (in this case the polygons between the road polygons).

This looks like what was done here, but delete any polylines with length greater than the road width, and use that polyline shape file to cut the road polygons.

I think is was one of the spider diagram tools in ET Geowizards

[michaelcollins1]

Found it, but it's point to point, not point to feature unfortunately.

http://arcscripts.esri.com/details.asp?dbid=14908

You need to find a script or tool that will draw a polyline from each intersection point to each "void" polygon to get started.

[GarrettRoss]

Do you think this will work in ArcGIS 10.0?
I am thinking you're on the right track with the spider diagram looking at the examples I have, THANKS!
I'll let you know.

[michaelcollins1]

spend a couple of hundred dollars on ET Geowizards, well worth the money for us poor ArcGIS Basic users.

http://www.ian-ko.com/

You can download it for free and use the "non-free" tools for a while.

Use Spatial Relations and Allocations\Spider Diagram - Attribute Link

Ensure that there is a field in each of the intersection and void polygon layers that have identical values (I created a field in each called NewID and populated all with zeros. If the are unique it will only do matching polygons)

Eliminate all of the unwanted polylines in the resultant shape file (i.e. lines > 5 m etc.)

Use resultant polyline shape file with the Polygon\Split Polygons with Polylines tool to split your road polygons.