2441 search results for "map"

Construct an unique index from two integer (Pairing Function)

April 3, 2013
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Construct an unique index from two integer (Pairing Function)

Recently, I need to construct an unique index from two integer. The best solution I found is the Pairing function. Pairing function is an one to one and onto function that map two integers to a single integer. The definition as follows: If ordering of x and y is not important, we can swap x

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R 3.0.0 is released! (what’s new, and how to upgrade)

April 3, 2013
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R 3.0.0 is released! (what’s new, and how to upgrade)

A few hours ago Peter Dalgaard (of R Core Team) announced the release of R 3.0.0!  Bellow you can read the changes in this release. One of the features worth noticing is the introduction of long vectors to R 3.0.0. As David Smith …Read more »

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Introducing the healthvis R package – one line D3 graphics with R

April 2, 2013
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We have been a little slow on the posting for the last couple of months here at Simply Stats. That’s bad news for the blog, but good news for our research programs! Today I’m announcing the new healthvis R package … Continue reading →

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Identify 2/3 vacation photos, win $5 Starbucks gift card

March 29, 2013
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Identify 2/3 vacation photos, win $5 Starbucks gift card

I have a $5 Starbucks gift card that I simply can't remember to use; I've had it since Christmas. So, I will mail it (within the U.S.A.) to the first commenter who can identify the longitude/latitude (within 5km) where two of these three vacation photos were taken (photos below). ***Update 3/30/2013: locations A and C

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Facebook profile photo changes reveal trends in support for same-sex marriage

March 29, 2013
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Facebook profile photo changes reveal trends in support for same-sex marriage

On Tuesday and Wednesday this week, the US Supreme Court heard two landmark cases related to same-sex marriage rights in this country. Simultaneously, to show solidarity for the cause of civil rights for gay members of society, thousands of Facebook users changed their profile pictures to a red equality symbol at the suggestion of the Human Rights Campaign. Most...

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Creating a Business Dashboard in R

March 28, 2013
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Creating a Business Dashboard in R

Business dashboards are available in many shapes and sizes. Business dashboards are useful to create an overview of key performance indicators (KPIs) important for the business strategy and/or operations. There are many flavours of dashboard frameworks and apps available, ranging in price from thousands of dollars to open-source implementations. Apparently  Read more »

Creating a Business Dashboard in R

March 28, 2013
By
Creating a Business Dashboard in R

Business dashboards are available in many shapes and sizes. Business dashboards are useful to create an overview of key performance indicators (KPIs) important for the business strategy and/or operations. There are many flavours of dashboard frameworks and apps available, ranging in price from thousands of dollars to open-source implementations. Apparently there are four key elements to a good dashboard: Simple, communicates easily Minimum distractions…it could cause...

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“Building ractives is so addictive it should be illegal!”

March 27, 2013
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clickme is an amazing R package. I was not sure what to expect when I first saw Nacho Caballero's announcement. I actually was both skeptical and intimidated, but neither reaction was justified. The examples prove its power, and his wiki tutorials ease...

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Rationality, and MS Excel (and other calculators)

March 27, 2013
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Rationality, and MS Excel (and other calculators)

This morning, Mathieu had a nice experience in his course on computational method in actuarial science. But let us start with some mathematical formal definitions. First, recall that is – somehow – a standard expression. No one should be surprised to see such an expression. Generally (as explained in http://en.wikipedia.org/… ), this function is defined only when . The...

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Build a search engine in 20 minutes or less

March 27, 2013
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Build a search engine in 20 minutes or less

…or your money back. author = "Ben Ogorek"Twitter = "@baogorek"email = paste0(sub("@", "", Twitter), "@gmail.com") Setup Pretend this is Big Data: doc1 <- "Stray cats are running all over the place. I see 10 a day!"doc2 <- "Cats are killers. They...

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