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Ask the Expert

Get Answers to your Mapping Questions

Robert C. White, Jr. is a third generation geologist with over 20 years of Geospatial Wisdom. His industry insight and practical expertise in the data development field are valuable assets to the serious explorer looking to increase the return on investment for his/her organization.

Every month, Robert shares his answers to some of the more pertinent data implementation and management questions facing the energy industry. Do you have a question you would like The Expert to address? Email your cartographic data questions to AskTheExpert@whitestar.com. Watch this column each month for Robert's expert advice!

 

Entries in Data Cleaning (2)

Friday
Feb032012

Which layer ideally controls the accuracy of the stack of GIS parcel layers?

The land survey or cadastral layer.  If this data is imprecise or inaccurate, every parcel built on top of it will be inaccurate as well.

Thursday
Dec152011

I've acquired a data set that poorly fits another data set. What do I do?

As a general rule, you should conflate (fit) the poorer quality data set to the data set of higher quality. There are instances where this should NOT be done - particularly if data accuracy varies with time. It's a judgment call where the more you know about your data, the better a decision you can make.