heatmap question

Yes I understand what ?<text> means, I meant is it possible to use  
this function (as an argument) with heatmap.2,  but I learned I can  
use add.expr=mtext(....) to do that.  However I'm not simply trying  
to add more text to the graph but rather move the display of the x- 
axis labels from the bottom of the chart to the top so the output  
would be more like:

1 2 3 4 5 6
--------------|1
		   |2
		   |3
		   |4
		   |5

On Jun 3, 2011, at 9:26 AM, Mark Aquino wrote:

Yes I understand what ?<text> means, I meant is it possible to use this function (as an argument) with heatmap.2,  but I learned I can use add.expr=mtext(....) to do that.  However I'm not simply trying to add more text to the graph but rather move the display of the x-axis labels from the bottom of the chart to the top so the output would be more like:

1 2 3 4 5 6
--------------|1
		   |2
		   |3
		   |4
		   |5

The help page makes me think that repositioning the x-labels (which would also require repositioning or suppressing the "upper" dendrogram)  would require hacking the function, since it sets up specific regions on the page with layout(). You should provide a minimal example for other readers, but I'm not going to proceed further since it is now clear that you are not just trying to move the 'xlab' which was how I interpreted your initial problem description.

[ Assuming you have suppressed the column dendrogram, it may be a simple as changing the 1 to 3 in this line of code:

axis(1, 1:nc, labels = labCol, las = 2, line = -0.5, tick = 0,
       cex.axis = cexCol)
....]

-- 
David

On Jun 2, 2011, at 10:45 PM, David Winsemius wrote:

On Jun 2, 2011, at 10:42 PM, Mark Aquino wrote:

Hey David,

Thanks for answering, but can I use mtext with the heatmap.2 function? According to the description that's not one of the arguments it takes.

It's not an argument. When someone types ?<something> it means to look at the help page for the <something> function which will appear if you just type ?<something> at the console.

Sorry if these questions are trivial, I'm very new with R, basically being forced to learn it for work.


Best,
Mark Aquino
On Jun 2, 2011, at 10:37 PM, David Winsemius wrote:

On Jun 2, 2011, at 4:08 PM, Mark Aquino wrote:

Hi,

I have what would seem to be a very simple problem but have been unable to find any way to go about solving it:
I am using heatmap.2 to create a heatmap and by default the x axis label is at the bottom of the heatmap, I simply want to move the label to the top of the heatmap.

?mtext

Any help with this would be greatly appreciated.

-- 

David Winsemius, MD
West Hartford, CT

David Winsemius, MD
West Hartford, CT

David Winsemius, MD
West Hartford, CT