Created Diagram looks crazy

Question

Original User: nomeus

Hi there,

i want to generate a schematic diagram from bus lines. I have the Shapefiles of the Routes (Polylines) and the Bus stops (Points). Now i want to generate the diagram, to make the plans more readable (e.g. Smart Tree).

I had already read the 2 Tutorials of ESRI Webhelp and watched the Video on Esri Virtual Campus, but i didn`t found my fault yet.

First, i created a schematic diagram template with the 2 feature classes, as the tutorial shows it.
After this, i startet ArcMap und selected my Line-Features and clicked on "Create New Schematic Diagram" and filled in the formular.
I tried it with the normal shapefiles and after transforming them into a network, but nothing worked.

In the most tests, there were no entrys in the attribute tables of the result --> nothing to display.
There was one "way to go" where i got a result, but ArcGIS offered me a crazy looking diagram (see attachment).

When i used the network builder instead, it was nearly working, but i always had to select/solve a route with the network analyst. So only the solved Route was displayed in my diagram and not the whole line-network.

I`m using ArcGIS 10 with Network Analysis and Schematics Extension. Can somebody please help me?

Best regards,
nomeus

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Anonymous User · Answer

Original User: 4233

Hi Stefan,

If you are using a network dataset or geometric network, then you do not need to ever do this as it is already handled.  If you are doing custom query type of things, then you simply create the originnode and extremitynode attributes on the link schematic feature classes in configuration and point to the appropriate fields in the source table.  So each schematic feature class that is a link needs to have both an originnode and extremitynode attribute configured to point to the correct field in the data (or run a query, function etc....).

There actually is a very detailed example in the help file, you must have just not seen it.  In the schematicdataseteditor.chm help file, there is a book called Schematics Configuration Tutorials.  Under that, open up Basic Configuration Tutorials and finally click on the Exercise 6: Quick start... item.  Scroll through that one until you see information about configuring the ISP_PIPES feature class (link).  It is all there.

Rick

Stefan_Arndt · Answer

If you don't have a 'network' (network dataset or geometric network), then for schematics to use the data, you have to define the connectivity.  So for your schematic link feature classes, you must create the OriginNode and ExtremityNode attributes and point them to fields (or a script attribute, function attribute etc... can be used) that contain the connectivity information.  This is basically like doing a custom query type of diagram because there isn't a real network to give schematics the connectivity information and therefore you have to use attributes to do it.

Dear Rick and other interests,

the explained way with the Network Dataset and the Route Layer works fine.
Beside solving the last difficulties i would like to give a try at the other way with adding ExtremityNode & OriginNode (see quote), just to become more fimiliar with Schematics.

I read in the Webhelp, that ExtremityNode and OriginNode are predefined Variables. 
So my question is, if it is sufficient when i add those 2 colums to the source shapefile attributes by a script? In the Cell's there would be the Informations about the ID (UOID?) of the Nodes next to every Line-Segment.
Are there already existing scripts who do this work? I didn't found one in the internet.
Is there something special to observe? Is my way of thinking to easy? Are there some problems i don't see?
I'm not sure if i really should believe, that schematics can handle the connections (directly) just by adding this 2 colums in the attribute tables 🙂 Even when the names are predefined: Do i have to tell schematics somewhere where it can find the connection-informations?

The Tutorial & WebHelp Informations are not very detailed in this case. They just give the same Information, as in the quote from Rick. But the ExampleData for instance, doesn't contain this 2 colums.

Anonymous User · Answer

Original User: nomeus

Yes! It works! Thank you very much! 🙂