[R] Heatmap with error message: `x' must be a numeric matrix

[peter dalgaard]

On Jun 25, 2013, at 21:51 , Rui Barradas wrote:

> Hello,
> 
> Your data has commas as decimal points, R uses the period. So the data is read in as strings, not numbers. You can change this by using argument 'dec' of read.table:
> 
> ?read.table
> read.table(...etc..., dec = ",")
> 
> 
> Or you can replace the commas with periods:
> 

Or use read.delim2(). That is what it is for.

-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com