Category Archives: Areas of application
Personal Geotagging: Data wrangling
I recently learned that the process of cleaning datasets so that they can really be used is called “data wrangling”. At first, I thought that the main data wrangling task in personal geotagging was going to be cleaning the GPS … Continue reading
Personal geotagging: note 1
The common item that lets you find a photo’s location in a GPS track is the time it was taken. In database terminology, time is the join column. Since I’m starting with photos that are already timestamped, I want to … Continue reading
Personal data: geotagging photos
I have over 50,000 photos I’d like to tag with the locations they were taken. In a perfect world, this would be a relatively simple matter of looking up each photo’s creation date and time, finding that date and time … Continue reading
Genome data at NCBI
The National Center for Biotechnology Information (U.S.) has a nice online viewer for the genomes of many organisms, including Homo sapiens. The human genome has just over 3 billion base pairs in about 25 thousand genes. This is a large … Continue reading
OpenStreetMap constructs maps from GPS tracks!
Sources and uses of digital information are in-scope for this blog, and a great example just showed up in my RSS reader today. OpenStreetMap is a wiki-like project to build a world map using contributed GPS tracks [OpenGeoData pointed me … Continue reading