1740 search results for "time series"

Graphing Highly Skewed Data

August 30, 2010
By
Graphing Highly Skewed Data

Graphing data with a few outliers is challenging, and some solutions are better than others. Here is a comparison of the alternatives.

Read more »

SST with Raster. Complete

August 29, 2010
By
SST with Raster. Complete

Update: new zip, correcting bug found by Steve  McIntyre: if(!file.exists(HadSST2ncdf)) downloadHADSST2() if(!file.exists(HadSST2ncdf)) downloadHadSST2() issue pending with another line as well. Checking raster versions. I’ve also, added some code into “downloadHadSST2″ that corrects for the “NA” problem with HadSST. (currently commented out). There is an issue with “ncdf” handling CF standards, which has been addressed in

Read more »

Excel Errors and Other Numerical Nightmares

August 25, 2010
By
Excel Errors and Other Numerical Nightmares

Although I use Excel all the time, and I strongly encourage my students to use it for performance analysis and CaP, I was forced to include a warranty disclaimer in my GCaP book because I discovered a serious numerical error while writing Appendix B. There, my intention was just to show that Excel gives essentially the same results...

Read more »

Excel Errors and Other Numerical Nightmares

August 25, 2010
By
Excel Errors and Other Numerical Nightmares

Although I use Excel all the time, and I strongly encourage my students to use it for performance analysis and CaP, I was forced to include a warranty disclaimer in my GCaP book because I discovered a serious numerical error while writing Appendix B. There, my intention was just to show that Excel gives essentially the same results...

Read more »

How Safe is Your Money?

August 24, 2010
By
How Safe is Your Money?

The FDIC regularly publishes a Failed Bank List and related statistics.  This post uses data in the original XLS from the FDIC web site which is formatted for human consumption to produce the charts below using R.  Note that 2010 data be...

Read more »

Taking R to the Limit: Parallelism and Big Data

August 23, 2010
By

In a two-part series at the Los Angeles R User Group, Ryan Rosario took a look at the many ways you can take the R language to the limits of high-performance computing. In Part I (see video at this link; slides and code also available), Ryan focuses on the various methods of parallel computing in R. There's some great...

Read more »

Taking R to the Limit, Part II – Large Datasets in R

August 20, 2010
By
Taking R to the Limit, Part II – Large Datasets in R

For Part I, Parallelism in R, click here. Tuesday night I again had the opportunity to present on high performance computing in R, at the Los Angeles R Users’ Group. This was the second part of a two part series called “Taking R to the Limit: High Performance Computing in R.” Part II discussed ways to work with large datasets...

Read more »

R courses from Statistics.com

August 19, 2010
By

The fine folks at Statistics.com have a number of courses related to R coming up in the next few months, including what looks to be a very useful course in handling data with R from none other than R Core Team member Paul Murrell. The courses from Statistics.com are on-line, so you can participate on your own schedule and...

Read more »

Using R for Introductory Statistics 3.3

August 11, 2010
By
Using R for Introductory Statistics 3.3

...continuing our way though John Verzani's Using R for introductory statistics. Previous installments: chapt1&2, chapt3.1, chapt3.2 Relationships in numeric data If two data series have a natural pairing (x1,y1),...,(xn,yn), then we can ask, &ld...

Read more »

Using R for Introductory Statistics 3.3

August 11, 2010
By
Using R for Introductory Statistics 3.3

...continuing our way though John Verzani's Using R for introductory statistics. Previous installments: chapt1&2, chapt3.1, chapt3.2 Relationships in numeric data If two data series have a natural pairing (x1,y1),...,(xn,yn), then we can ask, &ld...

Read more »