IBM Switch 15 Manuale Utente Scaricare il pdf (Pagina 102)

Chapter 5

Map to.

This method starts with the node to be introduced to the stream. First, right-click the node

to in troduce;

then, using the Data Mapping > Map To option from the pop-up men u, select the node

to which it should join. This method is particularly useful for mapping to a terminal node. Note:

You cannot map to Merge or Append nodes. Instead, you should simply con nect the stream to the

Merge node in

the normal manner.

Figure 5-44

Selecting data mapping options

Data mapping is tightly integrated into stream building. If you try to connect to a no de that

already has a connection, you will be offered the option of replacing the connec tion or mapping to

that node.

Mapping Data to a Template

To replace the da ta source for a template stream with a new source node bringing your o wn data

into IBM® SPSS® Modeler, you should use the Select Replacement Node option from the Data

Mapping pop-up menu. This option is av ailable for all nodes except Merge, Aggregate, and all

terminal nodes. Using the data mapping tool to perform this action helps ensure that ﬁelds are

matched pro perly between the existing stream operations and the new data source. The following

steps provide an overview of the data mapping process.

Step 1: Specify essential fields in the original source node.

In order for stream operations to run

properly, essential ﬁelds sh ould be s pe ciﬁed. For more information, see the topic Specifying

Essenti al Fields on p. 94.

Step 2: Add new data source to the stream canvas.

Using one o f the source nodes, bring in the

new replacement data.

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IBM Switch 15 Manuale Utente Pagina 102