Map

Rich Blocks, Poor Blocks

By markgreninger, on April 29th, 2013

Nice visualization of income and rent across America. Although it should be called Rich Tracts, Poor Tracts (Census Tracts are the geographic unit, not blocks) – but then not many folks are familar with Census Tracts (I get a lot of emails about “Census Tracks”).

Take a look: http://www.richblockspoorblocks.com/

Thanks to Joel Myhre at Nordic Geospatial for passing along.

Block-group level electricity usage in LA DWP

By markgreninger, on April 8th, 2013

This is pretty cool – I thought I would share this visualization of Block-group level electricity usage in LA DWP territory.

Unfortunately is it only DWP territory, but it is a great start. I would love to add this the LA County Solar Map

A source of interesting articles related to maps

By markgreninger, on March 26th, 2013

For your map-heads out there, The Atlantic’s Map section looks like it’s a great place to find out about interesting map-related articles.

Check it out!: http://www.theatlanticcities.com/posts/map/

341 million dots on a map

By markgreninger, on January 24th, 2013

census_dotmap Pretty cool – a dot for every person in the last united states and Canadian Census.

Check it out

FluView tracks the spread of flu

By markgreninger, on January 18th, 2013

Thanks Doug for pointing me here – I like the time effect so you can see the spread of the flu this year, which is apparently pretty bad.

Get your flu shot!!!!

Jo Mora’s map of Los Angeles

By markgreninger, on June 4th, 2012

Thanks to Joel Myhre for passing this tidbit along about an interesting map of LA that you can own if you want!

Here’s a quick tidbit:

It’s a neat map, because there’s little drawings of historical events, modern landmarks, and even surfers and Will Rogers. The borders are crammed full of an illustrated history of L.A., like the founding of the city, the water wars and the bombing of the L.A. Times building. There’s USC and UCLA, of course, and the airport, tar pits, San Fernando Mission, Angels Flight, and the movie studios, but also weird stuff like a chinchilla farm that used to be near Inglewood? An inexplicable ostrich near Lincoln Heights? A lion farm near Alhambra? Really fun stuff to look at.

Here’s a link to the full article: http://www.laobserved.com/archive/2012/05/you_can_now_buy_jo_moras.php

Tune your map data before publishing (MXDPERFSTAT)

By markgreninger, on February 21st, 2012

Result sample

A tool I recently began leveraging is the MXDPERFSTAT tool that gives very detailed outputs for the layer draw speed in a map document. This can help you tune your map data to help speed up map drawing – critical for all mapping that you may be doing (both desktop as well as web-based). It can also point you to layers that are causing slow drawing.

I find that it points me more to data optimization rather than map document optimization (building indexes, etc).

To give some idea of how I would use this – we recently completed a new cache for the County, which took over 1 month to run – if I had run this tool ahead of time it may have gotten this process done sooner.

I am including a number of resources here:

Link to ESRI’s download site (there are a lot of links out there, this is the one that worked for me).
Download from here (includes a sample output) - For ArcGIS 10 only.
getstats.txt (command line parameters to run the tool) - this is a set of parameters that I used to run our map file at the Web Mercator cache scales. Should help you run it as well.

Neighbors White Pages – get your neighbors phone numbers from a map

By markgreninger, on January 26th, 2012

Your neighbor's phone numbers

Looks like they’ve geocoded the entire white pages – this could be good in case of emergency, but not great from a privacy perspective (although I’ve seen a lot worse on other site):

http://neighbors.whitepages.com/

Map of the adopted LA County Board of Supervisor boundaries

By markgreninger, on September 29th, 2011

In case you want to print out a large map of the newly adopted boundaries, ISD has created one that you can use. It is 60 inches by 77 inches.

PDF map of the adopted board boundares (60×77).pdf

Thanks guys!

Map of the night sky in 37,000 pictures

By markgreninger, on May 13th, 2011

If any of you have played with Google Sky, this is a higher resolution version: http://media.skysurvey.org/interactive360/index.html

The article really discusses the amount of work this is. But I think of this as a map – just pointed up!!

Snapshot of the site

Los Angeles County Enterprise GIS

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