Click the Add button again and add TravelTime as a Cost, with Minutes as Units and Double as the Data type Finally, add Categories as a Hierarchy. Then click Next. Choose Yes for establishing driving directions. Click Next. Review the Summary of the Network Dataset and click Finish. Click Yes to allow ArcCatalog to build the network dataset. Now, you have a geodatabase network dataset that allows ArcGIS to understand roads in WRIA9 and the connected entities. With this connectivity, the program can model routing, among other things. SpeedLimit and TravelTime as well as Categories hierarchy provide the networking program/software with criteria for making choices, such as which roads to turn down when constructing a Least Coat Path through the road network. Question 1: Explain in your own words the purposes of SpeedLimit and TravelTime fields for the future analysis? Geocoding: creating a point feature class of potential pollution incidents on a street Geocoding is a process of creating point feature class based on a table with street addresses. Geocoding not only requires an input table of street addresses, but also requires reference data (road network dataset) with specific attribute information. An address locator is used to define the fields in the reference data that are used to determine the exact location of a specific address on a street and which side of the street it is on. For example when you are given an address of 158 S Spokane St., you know that an even number normally means it is located not only within a certain block but also on a specific side of the street. Once the address locator has been defined, the addresses can be matched to the reference data and a new point feature class can be created. The output point feature class will contain fields that are specific to geocoded data, such as status, score, match_type, side, match_addr, street or intersection and address. Status is an import field as it indicates whether the addresses have been matched (location was found), tied (two or more potential locations were found), or unmatched (no location was found).
Click the Add button again and add TravelTime as a Cost, with Minutes as Units and Double as the Data type Finally, add Categories as a Hierarchy. Then click Next. Choose Yes for establishing driving directions. Click Next. Review the Summary of the Network Dataset and click Finish. Click Yes to allow ArcCatalog to build the network dataset. Now, you have a geodatabase network dataset that allows ArcGIS to understand roads in WRIA9 and the connected entities. With this connectivity, the program can model routing, among other things. SpeedLimit and TravelTime as well as Categories hierarchy provide the networking program/software with criteria for making choices, such as which roads to turn down when constructing a Least Coat Path through the road network. Question 1: Explain in your own words the purposes of SpeedLimit and TravelTime fields for the future analysis? Geocoding: creating a point feature class of potential pollution incidents on a street Geocoding is a process of creating point feature class based on a table with street addresses. Geocoding not only requires an input table of street addresses, but also requires reference data (road network dataset) with specific attribute information. An address locator is used to define the fields in the reference data that are used to determine the exact location of a specific address on a street and which side of the street it is on. For example when you are given an address of 158 S Spokane St., you know that an even number normally means it is located not only within a certain block but also on a specific side of the street. Once the address locator has been defined, the addresses can be matched to the reference data and a new point feature class can be created. The output point feature class will contain fields that are specific to geocoded data, such as status, score, match_type, side, match_addr, street or intersection and address. Status is an import field as it indicates whether the addresses have been matched (location was found), tied (two or more potential locations were found), or unmatched (no location was found).
Geog482_582_Assignment3_Au_2015.docx