3904 search results for "GIS"

Introducing simmer: Discrete Event Simulation for R

September 3, 2014
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Introducing simmer: Discrete Event Simulation for R

This post has been transferred from another blog platform and could have dead links / incorrect lay-out. Please note: the syntax described here is no longer up-to-date, please refer to the readme at simmer’s GitHub page. Introduction The simmer package grew out of a personal need for a simple rapid development discrete event simulation (DES) framework....

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Notifications from R

September 3, 2014
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Notifications from R

You just sent a long R job running. How to know when it’s done? Have it notify you by beeping, sending you a text, or sending you a notification via pushbullet! beepr You can use Rasmus Bååth’s beepr package to have your computer play a sound. Install it from CRAN with Then, at the bottom

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The Limit of ATR Order Sizing

September 2, 2014
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The Limit of ATR Order Sizing

Before beginning this post, I’d like to notify readers that I have a webcast tomorrow (Wednesday, Sep. 3) at 4:30 … Continue reading →

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Win Books and T-shirts in Our DataScience.LA Meetup Raffles, Powered by R and dplyr!

September 2, 2014
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We have a few pieces of swag that we are raffling off to the community...

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Zoom, zoom, googleVis

September 2, 2014
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Zoom, zoom, googleVis

The Google Charts API is quite powerful and via googleVis you can access it from R. Here is an example that demonstrates how you can zoom into your chart. In the example below I set the maximum zoom level to 5% of the chart. Drag and pan with a left mo...

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Attention Is Preference: A Foundation Derived from Brand Involvement Segmentation

September 1, 2014
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Attention Is Preference: A Foundation Derived from Brand Involvement Segmentation

"A wealth of information creates a poverty of attention."Herbert SimonWe categorize our world so that we can ignore most of it. In order to see figure, everything else must become ground. Once learned, the process seems automatic, and we forget how har...

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Points Per Touch (PPT): Running Backs

September 1, 2014
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Points Per Touch (PPT): Running Backs

Overview American writer Lewis Grizzard once said that “The game of life is a lot like football. You have to tackle your problems, block your fears, and score your points The post Points Per Touch (PPT): Running Backs appeared first on Fantasy Football Analytics.

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A Brief Introduction to Plotly

August 28, 2014
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A Brief Introduction to Plotly

This is a guest post by Matt Sundquist. Matt studied philosophy at Harvard and is a Co-founder at Plotly. He previously worked for Facebook’s Privacy Team, has been a Fulbright Scholar in Argentina and a Student Fellow of the Harvard Law School Program on the Legal Profession, and wrote about the Supreme Court for SCOTUSblog.com. Emailing… Continue reading →

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Reading the Gauss-Markov theorem

August 26, 2014
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Reading the Gauss-Markov theorem

What is the Gauss-Markov theorem? From “The Cambridge Dictionary of Statistics” B. S. Everitt, 2nd Edition: A theorem that proves that if the error terms in a multiple regression have the same variance and are uncorrelated, then the estimators of the parameters in the model produced by least squares estimation are better (in the sense Related posts:

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Statistics: Losing Ground to CS, Losing Image Among Students

August 26, 2014
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by Norman Matloff The American Statistical Association (ASA) leadership, and many in Statistics academia. have been undergoing a period of angst the last few years, They worry that the field of Statistics is headed for a future of reduced national influence and importance, with the feeling that: The field is to a large extent being usurped by other disciplines,...

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