Richard,
WOW! A totally new way to think about loop indices, many, many, thanks!John
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
GRECC (BT/18/GR)
Baltimore, MD 21201-1524
(Phone) 410-605-7119
(Fax) 410-605-7913 (Please call phone number above prior to faxing)
>>> "Richard M. Heiberger" <r...@temple.edu> 01/07/15 10:27 PM >>>
tmp <- data.frame(a=rnorm(10), b=rnorm(10))
for (i in names(tmp)) hist(tmp[[i]], main=paste("histogram of", i))
On Wed, Jan 7, 2015 at 10:13 PM, John Sorkin
<jsor...@grecc.umaryland.edu> wrote:
> I am trying to automatically produce a series of histograms from every column
> of data frame with many columns.
> The columns names of a shortened from of the data frame follow:
>
>
> colnames<-names(smdata)
> colnames
> [1] "X13594_pre" "X15568_pre"
>
>
> I want to have
> X13594_pre in the title of the first histogram and
> X15568_pre in the title of the second histogram.
>
>
> I use the following code to automatically generate my histograms:
>
>
> for (i in 1:2){hist(smdata[,colnames[i]])}
>
>
> The titles of the histograms produced are:
> Histogram of smdata[,colnames[i]]
> and
> Histogram of smdata[,colnames[i]]
>
>
> How can I get the titles
> Histogram of smdata[,X13594_pre]
> and
> Histogram of smdata[,X15568_pre]
>
>
> 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
> GRECC (BT/18/GR)
> Baltimore, MD 21201-1524
> (Phone) 410-605-7119
> (Fax) 410-605-7913 (Please call phone number above prior to faxing)
>
>
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