791 search results for "maps"

Nightlights: cool data, bad geocoding

October 14, 2010
By
Nightlights: cool data, bad geocoding

A global source of population density has been on my low-priority wish list for some time, so I was very excited when I found Steve Mosher’s work with the Nighlights data set. “Nightlights” refers to the artificial lights seen from space at night. Astronomers call it “light pollution” which is pretty accurate since it’s decidedly

Read more »

Nightlights, Contours, and Rgooglemap

October 14, 2010
By
Nightlights, Contours, and Rgooglemap

I am continuing the investigation of nightlights using some additional packages from Cran. Here we add Rgooglemaps to the mix. Rgooglemaps is a neat tool that gives you a simple ( needs better docs) interface to the static map server. Perhaps, I’ll modify the code to my likeing, so For now I use it as

Read more »

Nightlights in China

October 10, 2010
By
Nightlights in China

Update: Some are not aware that GISS has switched to using Nightlights in the ROW. According to their updates they have moved to nightlights for the ROW. The station inventories can be found here The station I examine below is listed  like this in the new giss inventory 20551495001 TURPAN 42.92 91.00 24 384R -9MVDEno-9x-9HOT

Read more »

Mapping BioStar users onto the world map

October 9, 2010
By
Mapping BioStar users onto the world map

Neil is my new bioinformatics hero! (Sorry Pierre :)BioStar is a Q&A website for bioinformatics, just like the Blue Obelisk eXchange. Neil and Pierre have an ongoing struggle to gain the most karma, requiring Pierre to put in a formal complaint aga...

Read more »

BioStar users (of the world, unite)

October 9, 2010
By
BioStar users (of the world, unite)

Egon writes: Can someone please plot the BioStar users on a Google Map? Sounds like a challenge. Let’s go. 1. Harvesting user IP addresses BioStar user profiles (here’s mine) include a location field. It’s free text and optional, which means that location is missing or inaccurate for many users. However, if you’re logged into BioStar

Read more »

V3 Station mash up

October 3, 2010
By
V3 Station mash up

Hmm, lets see how a fusion table works with map maker. The process works like this. We read in the GHCN inventory file into R. ( see code below ) We then clean it up ( the names fields and missing values) and we output it to a  *csv  file. Then open the csv in

Read more »

Plotting Time Series data using ggplot2

September 30, 2010
By
Plotting Time Series data using ggplot2

There are various ways to plot data that is represented by a time series in R. The ggplot2 package has scales that can handle dates reasonably easily. Fast Tube by Casper As an example consider a data set on the number of views of the you tube channel ramstatvid. A short snippet of the data is shown

Read more »

Cooling stations. A UHI Hint

September 29, 2010
By
Cooling stations. A UHI Hint

Update: google earth files in the box: Personally I like to look at things backwards. Why are cool sites cool? So download the kml or kmz file and you can tour 62 sites: All with 90 years of data or more. All with a cooling trend. And all “supposedly” urban. what do you see at

Read more »

Riemann, Langevin & Hamilton [reply]

September 27, 2010
By
Riemann, Langevin & Hamilton [reply]

Here is a (prompt!) reply from Mark Girolami corresponding to the earlier post: In preparation for the Read Paper session next month at the RSS, our research group at CREST has collectively read the Girolami and Calderhead paper on Riemann manifold Langevin and Hamiltonian Monte Carlo methods and I hope we will again produce a

Read more »

Damn Close 5.0

September 24, 2010
By
Damn Close 5.0

Code will be in the drop box in a bit, once I shower:   This is a wholesale replacement of previous versions, completely rewritten in raster. It will be the base going forward. All of the analysis routines will be rewritten using raster.  For time series functionality I will continue to use zoo as that

Read more »