777 search results for "maps"

merge with solaR

merge with solaR

The version 0.22 of solaR includes a new method, mergesolaR. It is designed to merge daily time series of several solaR objects. For example, we can obtain the daily irradiation of the whole set of meteorological stations of Madrid (Spain) and use this information to calculate the productivity of a grid connected PV system. It

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Example 8.32: The HistData package, sunflower plots, and getting data from R into SAS

March 29, 2011
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Example 8.32: The HistData package, sunflower plots, and getting data from R into SAS

This entry is mainly a promotion of the fascinating HistData R package. The package, compiled by the psychologist, statistician, and graphics innovator Michael Friendly, contains a number of small data sets of historical interest. These include data ...

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sab-R-metrics Sidetrack: Bubble Plots

March 22, 2011
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sab-R-metrics Sidetrack: Bubble Plots

While I had mentioned in my last post that I will cover logistic regression in my next post, I decided that a quick interlude in working with bubble plots would be fun. Bubble plots have become pretty popular recently, especially with all of the Visualization Challenges I've seen around the internet (by the way, I...

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sab-R-metrics Sidetrack: Bubble Plots

March 22, 2011
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sab-R-metrics Sidetrack: Bubble Plots

While I had mentioned in my last post that I will cover logistic regression in my next post, I decided that a quick interlude in working with bubble plots would be fun. Bubble plots have become pretty popular recently, especially with all of the Visualization Challenges I've seen around the internet (by the way, I...

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A 3D Version of R’s curve() Function

March 21, 2011
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A 3D Version of R’s curve() Function

I like exploring the behavior of functions of a single variable using the curve() function in R. One thing that seems to be missing from R’s base functions is a tool for exploring functions of two variables. I asked for examples of such a function on Twitter today and didn’t get any answers, so I

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Circular or spherical data, and density estimation

March 17, 2011
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Circular or spherical data, and density estimation

I few years ago, while I was working on kernel based density estimation on compact support distribution (like copulas) I went through a series of papers on circular distributions. By that time, I thought it was something for mathematicians working ...

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Having a problem with R-2.12.2 64-bit and "gam’ package!

March 17, 2011
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Having a problem with R-2.12.2 64-bit and "gam’ package!

While working with some pitch location data recently, I ran across something strange when using my new computer (with R-2.12.2 64-bit) versus my work computer (with R-2.11.1 x64). Both are 64-bit computers, but I got the new one for portability (it's a laptop) and speed.Anyway, I had been doing some work in the office with Pitch F/X data,...

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Having a problem with R-2.12.2 64-bit and "gam’ package!

March 17, 2011
By
Having a problem with R-2.12.2 64-bit and "gam’ package!

While working with some pitch location data recently, I ran across something strange when using my new computer (with R-2.12.2 64-bit) versus my work computer (with R-2.11.1 x64). Both are 64-bit computers, but I got the new one for portability (it's a laptop) and speed.Anyway, I had been doing some work in the office with Pitch F/X data,...

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Visualizing Growth of a Retail Chain

March 15, 2011
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Visualizing Growth of a Retail Chain

I am a regular reader of the FlowingData blog by Nathan Yau. It is an excellent reference for anyone interested in statistical visualization of data. One of his posts that caught my attention was a visualization of the growth of Walmart in the US. Given my research interests in retail, it was a fascinating insight

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Review: R Graphs Cookbook by Hrishi Mittal

March 11, 2011
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Review: R Graphs Cookbook by Hrishi Mittal

Summary: Very useful for reference while producing graphs, and very comprehensive (including heat-maps, 3D graphs and maps). Reference: Mittal, H. V., 2011, R Graph Cookbook, Packt Publishing, Birmingham, UK, 272 pages,  Publisher’s Website As a scientist I often need to plot graphs of my data, so I am keen to learn more about how to

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