Create Join Layers
Only the Calls and Load Points layers are created using join layers. All other Responder layers are created using XY Event Layers or Query Layers. Creating join layers allows you to join geographic features with Responder symbology.
Join layers allow you to join a feature class in the map with a table that contains additional information and display this information in the map. For example, you can symbolize customer calls on the map by linking the Service Point feature class with the RX_CALLS table. The table contains information about calls that are received from customers at service points.
- First, add a layer to the Responder_cached group by right-clicking the group layer and selecting Add Data . Add the feature class that is impacted by the layer you're creating. For example, calls will be displayed on service points. Therefore you will add the ServicePoint layer to the Responder_cached group. The same holds true for load points. A load point denotes a service point that is impacted by an outage. Add the ServicePoint layer when creating the join layer for the load point.
- Once you've added the layer, right-click and select Properties. Use the General tab to rename the layer (e.g., Calls, Load Points) and click Apply.
- You will add the join to the layer. Select the Joins & Relates tab in the Layer Properties window.
- On the Joins & Relates tab, click Add in the group box for joins.
- The Join Data form opens. Select "Join attributes from a table" from the initial drop-down list.
- For step 1 on the form, select the field on which to base the join, in this case Object ID.
- For step 2, select the table to join to the layer. The drop down lists the data in your ArcMap Table of Contents. Click the folder icon to the right of the drop down to select a table from your geodatabase.
- For step 3, select the field on which to base the join for the table selected in the previous step. In this case, we use DEVICE_OID.
- Under Join Options, select the "Keep only matching records" option. This option equates to an inner join.
- You can click Validate Join if you want to ensure your join is setup properly.
- Click OK. If you receive a notice that your join has no rows, it just means there were no matching records (calls, in this case) in your current view of the data.
- Click OK to dismiss the Layer Properties window.
You can ensure that the join exists, by right-clicking the layer. Select Joins & Relates | Remove Joins. Your newly added join will appear in the Remove list. To remove it, select it from this menu.
Next, you will need to create XY Event layers.