r-project

Delete rows from R data frame

October 8, 2009 | 0 Comments

Deleting rows from a data frame in R is easy by combining simple operations. Let’s say you are working with the built-in data set airquality and need to remove rows where the ozona is NA (also called null, blank or missing). The method is a conce...
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useR! 2009 acceptance: presenting influence.ME

April 23, 2009 | 0 Comments

The organizing committee of the useR! 2009 conference just informed me, that my submission for presenting my extension package influence.ME, has been accepted! Influence.ME is a new R package that I’m currently developing, with the indispensable ... [Read more...]

R-Sessions 30: Visualizing missing values

January 8, 2009 | 0 Comments

It always takes some time to get a grip on a new dataset, especially large ones. The code-books are often as indispensable as they are massive, and not always as clear as one would want. Routings, and resulting and strange patterns of missing values are at times difficult to find. ...
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