Sorry to post this after David posted a summary, but I've managed
to make label expressions that do that he wants; namely: "label if a
condition is
met, no label if not met".
This technique relies on the fact that if you use the Int() function on a
logical
expression, it returns 1 for TRUE and 0 for FALSE.
Given a condition expression, and a label-expression, you need to specify
left$(label-expression,len(label-expression)*int(condition-expression))
For complicated label expressions, the final expression can get extremely
long, and a dedicated label column (as David indicated he would do in the
summary) is a feasible alternative. You can use this technique to fill in
that column, however.
In David's example, since the label-expression is
Name
and the condition-expression is
left$(Name,7)<>"UNNAMED"
he would use
left$(Name,len(Name)*int(left$(Name,7)<>"UNNAMED"))
Hope this helps
Spencer
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