arcgis-desktopdistancenearest neighbor
I have a polyline road dataset and a study area (polygon) covering the the road dataset. I want to determine the average distance for every given point within the study area to the nearest road. i don't have a dataset with the points. Also I don't necessary want to create a new dataset. All I am interested is the average distance.
Is there a tool that can do that job in ArcGIS Desktop?
I assume this:
You can use raster calculations to get the “average distance”. Here are the tools you use with ArcGIS Spatial Analyst:
Step 1: Euclidean Allocation
Use your point layer (“Capitol”) as input to create an allocation raster layer. This is the same as your thiessen polygons.
Step 2: Euclidean Distance
Use your point layer (“Capitol”) as input to calculate the distance from each pixel (=people) to the nearest Capitol.
Step 3: Zonal Statistics as Table
Summarizes the values of a raster (distance from step 2) within the zones of another dataset (allocation from step 1) and reports the results to a table.
We were solving similar problem. The best and fastest way for us is:
Best Answer
You could try running your point and polyline dataset through the spatial join geo-processing tool. If you set the match option to closest you can also specify a distance field which gives you the distance to the nearest polyline. From that you can do your summary statistics.
So fire up desktop help and look for the spatial join tool.