[R] Changeing logarithms

Sorkin, John jsorkin at som.umaryland.edu
Sun Nov 19 14:46:29 CET 2017

I am not certain what question you are asking. Perhaps the following will help:

log(x) give the natural logarithm of x

log10(x) gives the common (base 10) logarithm of x.


John David Sorkin M.D., Ph.D.
Professor of Medicine
Chief, Biostatistics and Informatics
University of Maryland School of Medicine Division of Gerontology and Geriatric Medicine
Baltimore VA Medical Center
10 North Greene Street
Baltimore, MD 21201-1524
(Phone) 410-605-7119
(Fax) 410-605-7913 (Please call phone number above prior to faxing)

From: R-help <r-help-bounces at r-project.org> on behalf of Aino Rprogram <ainorprogram at gmail.com>
Sent: Saturday, November 18, 2017 7:21 PM
To: r-help at r-project.org
Subject: [R] Changeing logarithms


I'm using a large panel data, and now I have faced some difficulties with
my analysis. The predictors are not normally distributed and there are
quite many outliers (some of them are influential though).

I have tried to change the logarythm, but i'm not sure, how to do that. I
want also draw a plot picture in which logarythms of predictors x and y are
changed. How could I do that?

Thanx before-hand!


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