Monthly Archives: June 2012

Make R analysis Modules just like MS Excel Templates: Derivative Calculator study case

June 4, 2012
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In this video tutorial, it will show you how to make R analysis Modules just like MS Excel Templates using the Building Derivative Calculator app as study case. Let’s say we wanted to know the derivative of tan(x^2 + 3), commonly, we will use th...

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Grid2Polygons

June 4, 2012
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Grid2Polygons

I’d like to introduce you to the Grid2Polygons function; an R function for converting sp spatial objects from class SpatialGridDataFrame to SpatialPolygonsDataFrame. The significance of this conversion is that spatial polygons can be transformed ...

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Obtaining a protein-protein interaction network for a gene list in R

June 3, 2012
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Obtaining a protein-protein interaction network for a gene list in R

Building a network of interaction between a bunch of genes can help a great deal in understanding the relationships between the seemingly disparate elements from your list. It can seems challenging at first to build such network but it's less complicat...

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How to draw a curve() with ggplot2

June 3, 2012
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How to draw a curve() with ggplot2

ggplot2 improves the graphics drawn with R. A (very) short adaptation time is needed to find how to make graphs equivalent to the ones of graphics. For example, to draw the curve of a function, there is no function similar to curve(). You have to use qplot() by setting the stat and geom arguments as

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Universal portfolio, part 3

June 3, 2012
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Universal portfolio, part 3

After the theoretical analysis, section 8 of Universal Portfolios provides examples.  We now use logopt and R to reproduce them, the first three in this post.The examples of Universal Portfolios use a long time series...

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Screencast: The Making of 3dfcc505dc

June 3, 2012
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Screencast: The Making of 3dfcc505dc

It was all going so well. Until my MacBook began experiencing memory issues. At around the 20 minute mark (which is close to the end), I lost some video explaining the use of the density plot auto-creation super-wizard function. The good news is that i...

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NBA Playoff Predictions Update 2 and Results (3-1)

June 3, 2012
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NBA Playoff Predictions Update 2 and Results (3-1)

This is my second follow-up to my previous two posts which were about predicting NBA games with an algorithm, and my first update to the algorithm. The algorithm's record is now 3-1, as it correctly predicted Boston and Oklahoma City as winners of the...

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Posts about ggplot2 on r-bloggers

June 3, 2012
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You can also get your fix of ggplot2 on r-bloggers (where this blog is also syndicated): http://www.r-bloggers.com/search/ggplot

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Removing "Y" outliers from the "Validation Set"

June 3, 2012
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Removing "Y" outliers from the "Validation Set"

This is a new video about how to monitor and interpret statistics and graphics for validation. Removing "Y" outliers from Validation SetPrevious videos about the Monitor function  for validation:Should I adjust the Bias?Monitor: Adding "RER" and "...

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NBA Playoff Predictions Update 2 and Results (3-1)

June 3, 2012
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NBA Playoff Predictions Update 2 and Results (3-1)

This is my second follow-up to my previous two posts which were about predicting NBA games with an algorithm, and my first update to the algorithm. The algorithm's record is now 3-1, as it correctly predicted Boston and Oklahoma City as winners of their past games. Upcoming things to do Sadly, I have been a bit busy, and I...

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