4107 search results for "GIS"

LAST CHANCE TO REGISTER FOR EARL (15-17 September, London)

September 4, 2014
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LAST CHANCE TO REGISTER FOR EARL (15-17 September, London)

The EARL Conference www.earl-conference.com is  just over a week away. EARL is the first conference dedicated to the commercial usage of R. If you want to see how a host of leading companies are using and implementing R and hear from R gurus such as Hadley Wickham, Matt Dowle, Romain Francois and Tal Galili, then don’t miss out The remaining tickets...

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Interactive visualization of non-linear logistic regression decision boundaries with Shiny

Interactive visualization of non-linear logistic regression decision boundaries with Shiny

(skip to the shiny app) Model building is very often an iterative process that involves multiple steps of choosing an algorithm and hyperparameters, evaluating that model / cross validation, and optimizing the hyperparameters. I find a great aid in this process, for classification tasks, is not only to keep track of the accuracy across models, »more

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Functions for Transferring Vector Data Between PostGIS and R

July 20, 2014
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Functions for Transferring Vector Data Between PostGIS and R

  There are numerous excellent packages to process and analyze spatial data in R. However, when a project involves multiple and/or large spatial data sets, it often makes sense to make use of a spatial database for data management. I use a PostGIS database (which is an extension to the PostgreSQL system) for storing and …Read More

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Last chance to register for the R in Insurance conference

June 30, 2014
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Last chance to register for the R in Insurance conference

The registration for the 2nd R in Insurance conference at Cass Business School London will close this Friday, 4 July. The programme includes talks from international practitioners and leading academics, see below. For more details and registration visi...

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Example 2014.7: Simulate logistic regression with an interaction

June 24, 2014
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Example 2014.7: Simulate logistic regression with an interaction

Reader Annisa Mike asked in a comment on an early post about power calculation for logistic regression with an interaction. This is a topic that has come up with increasing frequency in grant proposals and article submissions. We'll begin by showing how to simulate data with the interaction, and in our next post...

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gist: dfToJSON

May 30, 2014
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I’ve been using a lot of javascript charting and visualisation libraries recently (e.g. D3, highcharts) and found that it is quite painful to get my data into the JSON structure required by each library. Since I’m doing most of the data manipulation in R anyway it makes sense to arrange the data as a nested

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Early Bird Registration for the EARL Conference closes tomorrow (Friday 30th May)

May 29, 2014
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Early Bird Registration for the EARL Conference (Effective Applications of the R Language) closes tomorrow, Friday 30th May. The EARL conference will be held in London on the 15-17th September 2014   EARL is the first cross-sector conference dedicated to the business usage of R and features presentations from over 45 R experts and practitioners.  For further information and to purchase early...

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Early bird registration for R in Insurance ends tomorrow

May 29, 2014
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Early bird registration for R in Insurance ends tomorrow

The early bird registration offer for the 2nd R in Insurance conference, 14 July 2014, at Cass Business School ends tomorrow.This one-day conference will focus once more on applications in insurance and actuarial science that use R, the lingua franca f...

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R GIS: Function to Reverse KML Paths

May 3, 2014
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This is a function I wrote up for reversing KML-paths. The paths within a KML can partially matched by their name-tags## name: ReverseKmlPath ## use: Reverser a KML-path by matching its ## arguments: PATH_TO_DOC...

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R GIS: Generalizer for KML Paths

May 3, 2014
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I'm posting a recent project's spin-off, which is a custom line-generalizer which I used for huge KML-paths. Anyone with a less clumpsy approach?## line generalizing function: takes two vectors of with x/ycoords ## and return ids of x/y elements which distance to its next element## is shorter than the average distance between consecutive vertices## multiplied by 'fac'check_dist ...

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