Re: [R] Converting a data frame to matrix

2008-03-28 Thread hadley wickham
> > Is there any other way I can do this. > > > > say row names are city schools > > colnames are student names > > > Hi Adrian, > Have you looked at color2d.matplot in the plotrix package? > > Jim You might also want to check out the seriation package, which provides tools to reorder you

Re: [R] Converting a data frame to matrix

2008-03-28 Thread Petr PIKAL
Hi [EMAIL PROTECTED] napsal dne 28.03.2008 10:18:20: > Adrian Johnson wrote: > > Hello: > > > > I have a tab delim file with 100 rows and 100 columns. > > > > I have numerical values in this table. What I want is to create an image Probably not. See below. > > color map with color gradation.

Re: [R] Converting a data frame to matrix

2008-03-28 Thread Jim Lemon
Adrian Johnson wrote: > Hello: > > I have a tab delim file with 100 rows and 100 columns. > > I have numerical values in this table. What I want is to create an image > color map with color gradation. > > my values range from -5 to 0. max value is 0. > > to acheive this, I need to convert my da

Re: [R] Converting a data frame to matrix

2008-03-27 Thread jim holtman
Do an 'str' on your data so that we see what it contains. It may appear to be numbers, but they might also be factors as a result of the read.table. On Thu, Mar 27, 2008 at 7:43 PM, Adrian Johnson <[EMAIL PROTECTED]> wrote: > Hello: > > I have a tab delim file with 100 rows and 100 columns. > > I

[R] Converting a data frame to matrix

2008-03-27 Thread Adrian Johnson
Hello: I have a tab delim file with 100 rows and 100 columns. I have numerical values in this table. What I want is to create an image color map with color gradation. my values range from -5 to 0. max value is 0. to acheive this, I need to convert my data.frame into matrix. I tried following :