Monthly Archives: July 2012

MatLab, SAS, STATA, SPSS, Excel users: Try R, damn it!

July 2, 2012
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MatLab, SAS, STATA, SPSS, Excel users: Try R, damn it!

Due to my work with a multitude of statistical packages in my career I may be able to evaluate a lot of them. I’ve first used Excel for my calculations as most of the normal users do. I like the idea behind a spreadsheet and the combination of data and click-to-do functions. Nevertheless I’ve often

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Olive vs. Sunflower oil Spectra – 002 (ChemoSpec)

July 1, 2012
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Olive vs. Sunflower oil Spectra – 002 (ChemoSpec)

I add other data set of “sunflower oil” to import together with the olive oil into ChemoSpec R package. Before, as I showed in a video (Preparing spectra to import into ChemoSpec), every sample has been acquired with a NIR instrument (in transmitta...

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Visualizing uncertainty using Jackknife

July 1, 2012
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Visualizing uncertainty using Jackknife

Once again, I (re)discovered last week at the Rmetrics conference that old toolds can be extremely interesting to illustrate complex ideas, like uncertainty in fnancial markets, and stock prices. For instance a 99.5% quantile: we look for the scena...

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FAO statistical areas in Google Earth

July 1, 2012
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FAO statistical areas in Google Earth

Some time ago I did a blog describing how to get ICES and NAFO statistical areas, originally as shapefiles into Google Earth readable format (ICES, NAFO). These areas are the primary fisheries areas upon which nominal fisheries catch statistics have be...

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Colored 3D Map

July 1, 2012
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Colored 3D Map

In my previous post, I showed how to make a 3D view of an area using the persp function. However, I felt this was not a complete representation, especially for digital elevation. While looking for some reference for my presentation on the use of R for...

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Modeling Trick: Masked Variables

July 1, 2012
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Modeling Trick: Masked Variables

A primary problem data scientists face again and again is: how to properly adapt or treat variables so they are best possible components of a regression. Some analysts at this point delegate control to a shape choosing system like neural nets. I feel such a choice gives up far too much statistical rigor, transparency and Related posts:

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Step up your R capabilities with new tools for increased productivity

July 1, 2012
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Step up your R capabilities with new tools for increased productivity

I guess a lot of us actually use many tools to accomplish various things in their everyday life. There is the (not that uncommon) case where you have to build something that others will use in their everyday business life to get insights, information and/or take decisions. The basic implementation scenario here would be to build an excel workbook where

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Step up your R capabilities with new tools for increased productivity

July 1, 2012
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Step up your R capabilities with new tools for increased productivity

I guess a lot of us actually use many tools to accomplish various things in their everyday life. There is the (not that uncommon) case where you have to build something that others will use in their everyday business life to get insights, information and/or take decisions. The basic implementation scenario here would be to build an excel workbook where ...read more

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Rchievement of the day #3: Bloggin’ from R

July 1, 2012
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Rchievement of the day #3: Bloggin’ from R

I have become a complete knitr addict of late and have been using it in combination with RStudio’s R markdown support on a regular basis. In fact I wrote this post using it! It then dawned on me how great it would be if I … Continue reading →

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