3074 search results for "Map"

OpenCPU 1.2: Flexible and reliable R function RPC over HTTPS + JSON

December 19, 2013
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OpenCPU 1.2: Flexible and reliable R function RPC over HTTPS + JSON

Earlier this week, OpenCPU 1.2 was released. This release uses the new jsonlite package for JSON conversion, which puts in place the final fundamental piece of the OpenCPU framework. This post describes what has changed, why this is important, and how to upgrade. From here, no major changes in the OpenCPU API...

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Random points on some hemisphere

December 18, 2013
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Random points on some hemisphere

In my previous post, I tried to answer the following question Consider  points uniformly distributed on a sphere. What is the probability that the  points lie on a same hemisphere, for some hemisphere (there is no south or north here) ? If I have been able to use Monte Carlo simulations in dimension 2 (on a circle, not on a sphere), I could...

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24 Days of R: Day 17

December 18, 2013
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24 Days of R: Day 17

I couldn't manage to find time yesterday, so today I'm going to try and catch up with two posts. In the first, I'm going to talk about a package I've been gradually working on over the course of the year. After all, what's Christmas if you don't get a package? I do quite a lot

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HistogramTools 0.3

December 17, 2013
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A new version 0.3 of HistogramTools is now on CRAN. HistogramTools provides a number of methods for manipulating histograms, measuring the distance between histograms, calculating the information loss due to binning aggregate data sets, and other tool...

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Conditional dependence measures

December 17, 2013
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Conditional dependence measures

This week, I spend some time at the Workshop on Nonparametric Curve Smoothing conference at Concordia. Yesterday afternoon, Noël Veraverbeke show an interesting graph, to illustrate conditional copulas (and the derivation of conditional dependence measures, such as Kendall’s tau, or Spearman’s rho). A long time ago, in my PhD thesis (mainly on conditional copulas) I did try to derive conditional...

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Plotly Beta: Collaborative Plotting with R

December 16, 2013
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Plotly Beta: Collaborative Plotting with R

(Guest post by Matt Sundquist on a lovely new service which is pro-actively supporting an API for R) The Plotly R graphing library  allows you to create and share interactive, publication-quality plots in your browser. Plotly is also built for …Read more »

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New Geometry – Tline, Lline & Rline

December 16, 2013
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New Geometry – Tline, Lline & Rline

The latest version of ggtern, 1.0.1.0, has several bug-fixes and improvements. One worth mentioning, is the creation of some new geometries to assist in the plotting of constant value lines, analogous to hline and vline in ggplot2. For Lines of constant T value: For Lines of constant L value: For Lines of constant R value:… The post New...

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Processing EXIF Data

December 15, 2013
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Processing EXIF Data

I got quite inspired by the EXIF with R post on the Timely Portfolio blog and decided to do a similar analysis with my photographic database. The Data The EXIF data were dumped using exiftool. This command uses some of the powerful features of the bash shell. If you are interested in seeing more about

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The Complexities of Customer Segmentation: Removing Response Intensity to Reveal Response Pattern

December 15, 2013
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The Complexities of Customer Segmentation: Removing Response Intensity to Reveal Response Pattern

At the end of the last post, the reader was left assuming respondent homogeneity without any means for discovering if all of our customers adopted the same feature prioritization. To review, nine features were presented one at a time, and each time res...

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24 Days of R: Day 13

December 13, 2013
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24 Days of R: Day 13

In this post, I'll look at a very quick way to look at the relationships in a database. I had a bit of fun with my first network graph and plotting the connections between tables and views seems like a natural extension. Here, I'm going to create a bare bones insurance database. We have a

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