Re: [R] heatmap and continuous variable

From: Matthias Kohl <>
Date: Wed, 25 Jun 2008 11:36:15 +0200

Hello Hans,

I put an example for heatmap.2 with colored dendrograms and additional text under


Hans-Ulrich Klein wrote:
> Gregory Warnes wrote:
>> Hello Hans,
>> Do you need *both* a categorical *and* a continuous variable, or just a
>> continuous variable?
>> -Greg
> Hello Greg,
> I want to visualize survival data above the columns. So my continuous
> variable is follow up time and my categorical variable indicates the
> event. As the event has only two states (death or alive), one probably
> can omit an extra side bar for this variable and represent it by
> different colors within the plot for the follow up time. If it is
> easier to place two annotations above the heat map, that would be
> fine, too.
> Probably the simplest solution is: Just plot numbers (follow up times)
> in red (death) or blue(alive) above the columns. (Analogous to the
> sample names under the columns.) I do not know how to do this.
> Regards,
> Hans-Ulrich
>> On 6/24/08 4:51PM , "Hans-Ulrich Klein" <> wrote:
>>> Dear All,
>>> I want to plot a heat map with annotated columns. Both functions
>>> heatmap
>>> (stats) and heatmap.2 (gplots) can plot a horizontal side bar that can
>>> be used to visualize a categorical variable. In addition to a
>>> categorical variable, I would like to visualize a continuous variable.
>>> This could be done by small bars, a curve or simply numbers above the
>>> columns. (The Sample names are already located at the bottom.)
>>> Does someone have example code for this or a similar problem? Is
>>> this so
>>> special that I have to get down to the lattice package?
>>> Thank you,
>>> Hans-Ulrich

Dr. Matthias Kohl

______________________________________________ mailing list
PLEASE do read the posting guide
and provide commented, minimal, self-contained, reproducible code.
Received on Wed 25 Jun 2008 - 09:40:31 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Wed 25 Jun 2008 - 10:31:12 GMT.

Mailing list information is available at Please read the posting guide before posting to the list.

list of date sections of archive