I'm trying to add dynamic to show the neighbors of the current map sheet in a data driven map book. The preStr tag is showing up even when the attribute is empty because that sheet has no neighbors in that direction. If there is no preStr tag the text box also no longer displays [empty] and becomes really hard to find. Below is an example of the text box contents. Has any one else had this issue?
I think we figured out what is happening. Is your index layer a shapefile? We noticed with shapefile (not fGDBs) if you clear out a data value via a highlight/clear and save the data, the value is still a space - not Null.
A short term work around could be using a fGDB as an index layer OR use the field calculator to null out values with a space.
A longer term solution we are considering is to make the empty string also evaluate for spaces only.
I think we figured out what is happening. Is your index layer a shapefile? We noticed with shapefile (not fGDBs) if you clear out a data value via a highlight/clear and save the data, the value is still a space - not Null.
A short term work around could be using a fGDB as an index layer OR use the field calculator to null out values with a space.
A longer term solution we are considering is to make the empty string also evaluate for spaces only.