Who's Reading in October

I see Madison is back in the top spot.  I like Google Analytics but I wish there was an easier way to share.  I mean you can export it to a PDF which is nice, but it would really be cool to have a widget on Blogger that shows this stuff on an interactive map.  Yes, I am a nerd so I like numbers and charts and statistics. 

Rank City Visits
1 Madison 715
2 Milwaukee 623
3 La Crosse 510
4 St Louis, MO 266
5 Chicago, IL 180
6 Winona, MN 151
7 Washington, DC 149
8 Elm Grove 136
9 New York, NY 131
10 St Paul, MN 128
11 Appleton 124
12 Green Bay 101

Since I am in a geeky mood, a story for you.  A while back my car broke down in Baraboo after a camping trip with some friends at Devils Lake(involving Latin Masses and drinking beer... at different times).  I got a ride back to La Crosse but I left the car and had it towed to get repaired.  Later that week after it was repaired I got a ride back to Baraboo and so I looked up on Google Maps where the address to the shop was located.  It showed the location downtown Baraboo.  We showed up, and no repair shop to be seen.  We asked somebody and we were told to head back toward the insterstate.  The actual location was something like 5 or 6 miles from Baraboo up the old Hwy 12.

Centroids, gotta love em!
So how did Google Maps get it wrong?  Well let me tell you a little something about geo assignment.  There are two levels of geo assignment when you give an address, centroid level and address(or rooftop) level.  If you do data processing you sometimes don't need and actual address level assignment, just a general idea of the location.  A centroid is a geometric shape fit on the map, which could be a square but almost always is some awkward shape.  It usually represent part of a zip code(and actually could be assigned with just the 9 digit zip code).  When the assignment is made at the centroid level, it will put the pointer on the map to the mathematical middle of that shape.  So what Google does is it tries to assign to the address level, if not, hey, it will get you "close" ... by, oh I don't know, 10 miles or so?  I would expect it to tell you it can't make the address level assignment but that might not look so good to someone who thinks Google is right about everything.  So now next time you are Google mapping something, and later that evening you you find yourself conveniently in the middle of a corn field instead of meeting up with your future traddy spouse at a new Wisconsin brewpub, you know why.

4 comments:

Matt said...

You are such a nerd!!!!

Carolyn said...

You might be nerdy, but I'm LOVING it. Because now that makes sense why I've sometimes been 'at my destination' but not really. It's like an NBC PSA....This educational moment brought to you by Badger Catholic. Thanks!

Badger Catholic said...

Thank you for the kind words Carolyn. :)

GOR said...

Tsk! tsk! BC. You should have used Mapquest. Sometimes more technology is not necessarily better...

From a retired techie who now espouses 'low tech' more and more! A pox on all their iPads, Pods, Droids and Nooks...!