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Network Dataset Template/Schema: What's in it?

Question asked by DapperMapperWRapper on May 16, 2020
Latest reply on May 21, 2020 by DapperMapperWRapper

Hi all, thank you in advance for any help you could give me. I'm new here and may have posted this in the wrong place.

 

I am unclear about what network database templates are and how I can use them. I've done a little poking around on google and youtube about this topic, but I'm still unclear.

 

I am attempting to use arcpy with ArcGIS 10.7 to do a simple service area analysis--how far distance-wise through a road network is a place on the road network from any of the nearest of many facilities. However, the geographic scope of this effort is quite large and can be over entire countries--say all of Japan.

 

What I currently have the idea to do is create a network dataset on a smaller area in ArcMap, then use arcpy to make a template of the of this network data set using the CreateTemplateFromNetworkDataset tool.

 

Create Template From Network Dataset—Help | Documentation 

 

I would then like to use that template to create a network dataset for the larger area using CreateNetworkDatasetFromTemplate.

 

Create Network Dataset From Template—Help | Documentation 

 

Specifically for this effort, I would like to make a network dataset and create a template of it for the Japanese island of Shikoku. Then I would like to use this template to do the service area analysis mentioned above for all of Japan. Is this possible? The code seems to work but I don't understand what is happening under the hood and I'm worried I might be missing something.

 

I'd also like to know more about templates and schema's in general. For example, can I use the templates I create for this on Japan, on other countries? I know that part of a schema is the projected coordinate system. So as long as I determine that the projected coordinate system from the first template is suitable for the new area I want to do the service area analysis on, can I just use the same template? What else is or could be missing?

 

Thank you for any possible help!

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