Displaying 4 results from an estimated 4 matches for "uddin".
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addin
2007 Apr 08
1
How do I back transforme ordinary log-krigged prdiction values?
I have a question to everybody.
After log10 transfprmation, I have done ordinary kriging in gstat in R? I
need to back trnasform the prediction values to orgiginal scale. How do I
do this in gstat in R?
Thanks
Zia
--
Zia Uddin Ahmed
915 Brad Field Hall
Department of Crop and Soil
Cornell University
Ithaca NY 14850
USA
2007 Apr 04
5
how to image.plot a XY grid file into a lat-lon map
Hi All,
I have a netcdf gridded file with LCC projection. I can easily use
image.plot to visualize it. However, as the axises are in X,Y, not Lat and
Lon, I could not add state or country maps onto it (or lat lon information).
I do have a grid2d file that describes the lat and lon for each (X,Y) grid,
but the lat and lon are not regularly spaced, so I could not use image.plot.
Does anyone know
2012 Jan 03
0
Biglm source code alternatives (E.g. Call to Fortran)
Hi everyone,
I have been looking at the Bigglm (Basically does Generalised Linear Models
for big data under the Biglm package) command and I have done some profiling
on this code and found that to do a GLM on a 100mb file (9 million rows by 5
columns matrix(most of the numbers were either a 0,1 or 2 randomly
generated)) it took about 2 minutes on a linux machine with 8gb of RAM and 4
cores.
2011 Dec 14
0
Reading Oracle SQL Developer BLOB/CLOB files into R (Packages: DBI, foreign, RODBC, ROracle)
Hi everyone,
I have been following these forums closely for the last few months but this
is my first time posting. Basically I am trying to get an Oracle SQL
Developer Binary Large Object(BLOB/CLOB) file in as an R object in R. For
those not familiar with a BLOB/CLOB file, it is basically lik a table that
has cells that contain tables or files. By converting the large table into a
BLOB/CLOB file