Displaying 4 results from an estimated 4 matches for "t2m".
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p2m
2010 Jun 15
1
Error when callin g C-Code
Hi
when I call the function below in R, i get the error: Object 'pairlist'
can't be converted to 'double'.
#include <R.h>
#include <Rdefines.h>
#include <Rmath.h>
SEXP CSimPoisson(SEXP lambda, SEXP tgrid, SEXP T2M, SEXP Ni, SEXP NT)
{
double sign, EVar;
double *xlambda, *xtgrid, *xT2M, *xNi, *xNT, *xtau;
SEXP tau;
int ltgrid =0;
int i = 0;
int j = 0;
sign = 0;
EVar = 0;
ltgrid = LENGTH(tgrid);
PROTECT(lambda = AS_NUMERIC(lambda));
PROTECT(tgrid = AS_NUMERIC(tgrid));
PROTECT(T2M = AS_NUMERIC(T2...
2008 Nov 24
0
spatial subset of ncdf
dear
I was lokking for a solution or an example on the internet for quite a time
but since haven?t found an answer yet, I'd like to ask a maybe to simple
question:
I have a large ncdf-file with five dimension.
temperature (t2m), the variable against, lat, lon and time. (height is
included as well)
the structure is
[1] "file C:/RDaten/t2m.ETH.HC_A2.nc has 5 dimensions:"
[1] "height Size: 1"
[1] "rlat Size: 75"
[1] "rlon Size: 65"
[1] "time Size: 11160"
[1] "...
2010 Jun 13
1
Simulating a Poisson Process in R by calling C Code over .Call
Hi
I want to write a C function for the R Code below and call it with .Call:
SimPoisson <- function(lambda,tgrid,T2M)
#Simulation eines Poissonprozesses
{
NT <- 0
Ni <- rep(0,length(tgrid))
tau <- 0
sign <- 0
if(lambda != 0)
{
i=1
j=1
while (1)
{
EVar <- rexp(1,lambda)
sign <- sign + EVar
if (sign > T2M)
{
break
}
tau[i] <- sign
i = i+1
for (j...
2012 Mar 14
1
climate data, Netcdf
As you can see:
time is from 1 to 1460, 1 means they the measure Tem for the globe at the
first 6 hours , 2=after 12 hours .....; and so on 1460 *6 = 8760 hours which
equals 1 year
first of all I want to convert all data from kelvin to degree
second I want to convert from 6 hourly to daily and make it like this
raw data what i want to make
time