search for: douvis

Displaying 3 results from an estimated 3 matches for "douvis".

2008 Apr 09
4
apply lm() for all the columns of a matrix
...to perform linear fit to all the columns of a matrix? (or in the one dimension of a multi-dimensional array.) I'm talking about many single linear fits, not about a multiple fit. I thought that a combination of apply and lm would do it but I can't make it work Thank you Kostas -- Kostas Douvis PhD Student University of Athens - Department of Geography and Climatology Academy of Athens - Research Centre for Atmospheric Physics and Climatology email: cdouvis at geol.uoa.gr tel: +30-210-8832048
2008 Jan 07
2
output into an unformatted direct fortran file
...lo everybody Is there a way to output data into a file like the unformatted, direct fortran files? That's the kind that can be opened with: open(30, file='file', format='unformatted', access='direct', rec=1000, convert='big endian') Thank you in advance Kostas Douvis
2008 Mar 17
1
how to plot a map on a non-rectilinear grid
...at<-matrix(0,20,25) elev<-matrix(0,20,25) for (i in 1:20) { for (j in 1:25) { lat[i,j]<-i+((j-12.5)^2)/100 lon[i,j]<-j+((i-10)^2)/100 elev[i,j]<-i+j } } All 3 matrices have dimensions 20x25. How can I plot elev values in the grid points defined by lat and lon? -- Kostas Douvis PhD Student University of Athens - Department of Geography and Climatology Academy of Athens - Research Centre for Atmospheric Physics and Climatology email: cdouvis at geol.uoa.gr tel: +30-210-8832048