2232 search results for "Map"

Migrating from SPSS/Excel to R

July 10, 2011
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Migrating from SPSS/Excel to R

In this post, I give an outline for those interested in migrating from using SPSS and Excel for data processing/analysis …Continue reading »

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High-quality R graphics on the Web with SVG

July 7, 2011
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High-quality R graphics on the Web with SVG

If you want the graphics you create with R to look their best, in general it's best to go for a vector-based graphics format instead of a raster-based format. Common formats like GIF and JPG are raster-based: the image is composed of pixels, and if you don't choose a high enough resolution, you're likely to lose fine details and/or...

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Descriptive statistics, causal inference, and story time

July 7, 2011
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Dave Backus points me to this review by anthropologist Mike McGovern of two books by economist Paul Collier on the politics of economic development in Africa. My first reaction was that this was interesting but non-statistical so I’d have to either post it on the sister blog or wait until the 30 days of statistics

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Example 9.1: Scatterplots with binning for large datasets

July 5, 2011
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Example 9.1: Scatterplots with binning for large datasets

Scatterplots can get very hard to interpret when displaying large datasets, as points inevitably overplot and can't be individually discerned. A number of approaches have been crafted to help with this problem. One approach uses binning. This approa...

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Different goals, different looks: Infovis and the Chris Rock effect

July 5, 2011
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Different goals, different looks:  Infovis and the Chris Rock effect

Seth writes: Here’s my candidate for bad graphic of the year: I studied it and learned nothing. I have no idea how they assigned colors to locations. I already knew that there were more within-city calls than calls to individual distant locations — for example that there are more SF-SF calls than SF-LA calls.

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GIS on a shoestring – Getting traveltimes from google

July 2, 2011
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The analysis of geospatial information is currently a big trend in medicine and public health. Even though some may want to convince you that this can only be achieved with the latest and most expensive software, I am not convinced. First, analysis  of spatial data dates back to at least 1856 when John Snow investigated

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Saving Chunks of SSURGO Data in SoilWeb for Google Earth

June 28, 2011
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Saving Chunks of SSURGO Data in SoilWeb for Google Earth

SoilWeb is an interactive, multifaceted interface to USDA-NCSS soil survey information. Our SoilWeb application for Google Earth streams soil map units and point data as you navigate across the lower '48 states. Currently, our system imposes a 30,000 ...

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googleVis library on use

June 26, 2011
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googleVis library on use

Data on the map While surfing around the Internet I accidentally found the googleVis library for R and especially the gvisGeoMap-function which creates a map based on country data.  In a table hockey scene we have a great World Ranking … Continu...

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googleVis library on use

June 26, 2011
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googleVis library on use

Data on the map While surfing around the Internet I accidentally found the googleVis library for R and especially the gvisGeoMap-function which creates a map based on country data.  In a table hockey scene we have a great World Ranking … Continue reading →

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The R Journal: June 2011

June 24, 2011
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The latest issue of the R Journal is out, and as always includes many useful articles about using R and R packages. Articles in Volume 3/1 dive into topics including creating test for R packages with test_that; dealing with times, time zones, dates and holidays with timeDate; social network analysis of mailing lists through text mining; creating choropleths and...

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