Changeset 3911 for trunk/doc/src/docbook/admindoc/plugin_installation.xml

Timestamp:

Nov 6, 2007, 9:42:09 AM (15 years ago)

Author:

Nicklas Nordborg

Message:

Fixes #811: Wildcard or regular expressions in raw data column mappings

To be consistent with exact name matching the first column found is always returned

File:

• trunk/doc/src/docbook/admindoc/plugin_installation.xml (modified) (1 diff)

trunk/doc/src/docbook/admindoc/plugin_installation.xml

@@ -1372 +1372 @@
               mapping has better performance and we recommend that you use
               it unless you have to recalculate any of the numerical values.
+              In both cases, if no column matching the placeholder exactly is found 
+              the placeholder is interpreted as a regular expression that
+              is matched against each column. The first one found is used.
               Here are a few mapping examples:
             </para>
             
 <informalexample>
-<literallayout>\Name\
-\1\
-[\row\, \column\]
-=2 * col('radius')
+<literallayout>\Name\ --&gt; exact match is required
+\1\ --&gt; column with index 1 (the second column)
+[\row\, \column\] --&gt; combining row and column to a single coordinate
+=2 * col('radius') --&gt; calculate the diameter dynamically
+\F63(3|5) Median\ --&gt; use regular expression to match either F633 or F635
 </literallayout>
 </informalexample>