Ask A Cartographer

Data Driven Pages: Clipping

October 12 2010 | 0 comments
Categories: ArcGIS Methods, Map Data

I have a map book whose pages are clipped nicely to the current data driven page extent. However, this map would benefit greatly from the ability to extend the line work not to the extent of the entire dataframe (as an exclusion would do), but only about 1/4 mile or *blank* percentage further than the data driven polygon's perimeter. Is this currently possible? Thank you!

Mapping Center Answer:

One way to achieve this is to create a buffer around your index feature polygon, and use this new buffered polygon layer as the index for your data driven pages. Then, set your Data Frame Properties > Data Frame Tab, Clip Options to Clip to current data driven page extent. This will clip your line work to the buffered polygon, and you can symbolize the buffer not to show, and position your original polygon index on top of the drawing order in the Table of Contents.

So, then the question becomes, how do I make a buffer that will be suitable at different scales? What worked for me was to add a new field in your index polygon layer, called Buffer, then use the Calculate tool to calculate a percentage of the perimeter field ([PERIMETER]*0.05). You can use the calculated percentage of the perimeter field, called Buffer, in the Buffer tool, and your output is a buffer layer that is suitable to use as your data driven pages index layer, for all scales in your polygon layer.

If you would like to post a comment, please login.

Contact Us | Legal | Privacy |