Blog Archives

Forest plots using R and ggplot2

March 9, 2011
By

Abhijit over at Stat Bandit posted some nice code for making forest plots using ggplot2 in R. You see these lots of times in meta-analyses, or as seen in the BioVU demonstration paper. The idea is simple - on the x-axis you have the odds ratio (or what...

Read more »

Forest plots using R and ggplot2

March 9, 2011
By
Forest plots using R and ggplot2

Abhijit over at Stat Bandit posted some nice code for making forest plots using ggplot2 in R. You see these lots of times in meta-analyses, or as seen in the BioVU demonstration paper. The idea is simple - on the x-axis you have the odds ratio (or what...

Read more »

Splitting a Dataset Revisited: Keeping Covariates Balanced Between Splits

March 8, 2011
By
Splitting a Dataset Revisited: Keeping Covariates Balanced Between Splits

In my previous post I showed you how to randomly split up a dataset into training and testing datasets. (Thanks to all those who emailed me or left comments letting me know that this could be done using other means. As things go with R, it's sometimes ...

Read more »

Splitting a Dataset Revisited: Keeping Covariates Balanced Between Splits

March 8, 2011
By

In my previous post I showed you how to randomly split up a dataset into training and testing datasets. (Thanks to all those who emailed me or left comments letting me know that this could be done using other means. As things go with R, it's sometimes ...

Read more »

RStudio: New free IDE for R

February 28, 2011
By

Just saw the announcement of the availability of Rstudio, a new (free & open source) integrated development environment for R that works on Windows, Mac, and Linux. Judging from the screenshots, it looks like Rstudio supports syntax highlighting for Sweave & easy PDF creation from Sweave code, which is something I haven't seen anywhere else (on Windows at least)....

Read more »

RStudio: New free IDE for R

February 28, 2011
By

Just saw the announcement of the availability of Rstudio, a new (free & open source) integrated development environment for R that works on Windows, Mac, and Linux. Judging from the screenshots, it looks like Rstudio supports syntax highlighting for Sweave & easy PDF creation from Sweave code, which is something I haven't seen anywhere else (on Windows at least)....

Read more »

Split a Data Frame into Testing and Training Sets in R

February 24, 2011
By

I recently analyzed some data trying to find a model that would explain body fat distribution as predicted by several blood biomarkers. I had more predictors than samples (p>n), and I didn't have a clue which variables, interactions, or quadratic terms made biological sense to put into a model. I then turned to a few data mining procedures that I...

Read more »

Split a Data Frame into Testing and Training Sets in R

February 24, 2011
By

I recently analyzed some data trying to find a model that would explain body fat distribution as predicted by several blood biomarkers. I had more predictors than samples (p>n), and I didn't have a clue which variables, interactions, or quadratic terms made biological sense to put into a model. I then turned to a few data mining procedures that I...

Read more »

Get all your Questions Answered

February 22, 2011
By

When I have a question I usually ask the internet before bugging my neighbor. Yet it seems like Google's search results have become increasingly irrelevant over the last few years, and this is especially true for searching anything related to R (and pr...

Read more »

Get all your Questions Answered

February 22, 2011
By

When I have a question I usually ask the internet before bugging my neighbor. Yet it seems like Google's search results have become increasingly irrelevant over the last few years, and this is especially true for searching anything related to R (and pr...

Read more »