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Quick question, Jay: What is the difference between Total_Length and Shape_Length? Thanks!
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12-17-2010
06:27 AM
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Hi, Just a shot in the dark, but why not add a new field first (with Add Field) and then calculate that field (with Calculate Field) for those selected using the same SQL syntax you used for the selection?
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06-08-2010
12:10 PM
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In Model Builder, I've added a Spatial Join process. I want to Spatial Join six separate point layers to a single polygon layer with match option of contains. Because I want to Spatial Join all six point layers to the polygon layer at the same time, I've gone ahead and created a Variable from the Join Features of the Spatial Join tool. In the newly created Variable, I can add all six separate point layers as a batch. However, I'm interested in the number of points that fall into each polygon. This is typically generated with a default [Join_Count] field when Spatial Join is executed. Since I am interested in the count of six separate layers, I want six separate count fields. Thus, I tried to modify the Field Map of the Join Features for the batch. The default [Join_Count] field didn't show up in the Field Map -- fine. But I did add the new fields in the Field Map, set their field Type (to Long Integer), set the length of those long integers, and set the Merge Rule to "Count". Here's the problem: when I validate the model, my added "Count" fields (which, take the format: [I_1W], [I_2W], [I_3W], etc.) disappear. How can I add some count fields that correspond to the six separate spatial joins performed by this batch in Model Builder?
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06-08-2010
12:05 PM
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Yes, Dale! Thank you! I discovered the Select Data tool from reading old posts just moments after writing. Thanks again!
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06-08-2010
10:45 AM
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I'm rather new to Model Builder. I'm trying to build a model that solves a Service Area through Network Analyst. I want to export the polygons generated into their own feature class / shapefile. I can do this, but only after running all steps prior to the export. That is, I must first generate the derived Service Area layer prior to exporting it. Without first running the Solve, I cannot export my Service Area polygons because they don't yet exist. How can I build a model that knows to expect a derived Service Area polygon layer that will be converted into a feature class upon which the rest of the model can proceed? Any help? Thanks in advance! Matthew
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06-08-2010
08:02 AM
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