search for: regriding

Displaying 8 results from an estimated 8 matches for "regriding".

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2012 Oct 21
1
[newbie] failure to plot a RasterLayer with raster::plot or fields::image.plot
summary: spatial data to be input to a regional-scale environmental model must (1) be converted to netCDF and then (2) "regridded" (cropped, projected, increased resolution). In a public git repository https://github.com/TomRoche/GEIA_to_NetCDF I have R code (with bash drivers) that does the conversion step, and plots the converted output, apparently correctly. However attempts to plot
2007 Feb 19
1
need help in reading TOMS observed ASCII data file
...0.0 0.0 0.0 > 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 > > --------------------------------- > > ------------------------- > > ################# > > 12 columns and 72 rows (latitudexlongitude) > > > > > > THIRD PROBLEM regriding AOD: > How to regrid 1x1 AOD data on 5x5 grid as O3. > > > Many thanks for yours help. > > Regards, > Yogesh > > -- > Dr. Yogesh K. Tiwari, > Scientist, > Indian Institute of Tropical Meteorology, > Homi Bhabha Road, > Pashan, > Pune-411008 > INDIA &...
2007 Feb 19
0
problem in reading TOMS observed ASCII data file
....0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 --------------------------------- ------------------------- ################# 12 columns and 72 rows (latitudexlongitude) THIRD PROBLEM regriding AOD: How to regrid 1x1 AOD data on 5x5 grid as O3. Many thanks for yours help. Regards, Yogesh -- Dr. Yogesh K. Tiwari, Scientist, Indian Institute of Tropical Meteorology, Homi Bhabha Road, Pashan, Pune-411008 INDIA Phone: 0091-99 2273 9513 (Cell) : 0091-20-258 93 600 (O) (Ext.250)...
2010 Feb 09
2
Resampling a grid to coarsen its resolution
Dear all, I have a grid (data frame) dataset at 0.5 x 0.5 degrees spatial resolution (720 columns x 360 rows; regular spacing) and wish to coarsen this to a resolution of 2.5 x 2.5 degrees. A simple calculation which takes the mean of a block of points to form the regridded values would do the trick. Values which should be excluded from the calculation are -9999 (unless all points within a block
2011 May 31
0
ENC: Using lm() combined with sapply
Hi Caio, I just replied to a fellow who needed to run a series of regressions changing the dependent variables for the same period. I believe your solution might be similar to that one, just making the window dynamic instead. I used a lapply to store regressions and sapplys to extract stats from the lm()s. Please check the attachment and hope it?s useful. Filipe Botelho -----Mensagem
2008 Jul 06
3
Lots of huge matrices, for-loops, speed
Hello, we have 80 text files with matrices. Each matrix represents a map (rows for latitude and columns for longitude), the 80 maps represent steps in time. In addition, we have a vector x of length 80. We would like to compute a regression between matrices (response through time) and x and create maps representing coefficients, r2 etc. Problem: the 80 matrices are of the size 4000 x 3500 and we
2013 Apr 26
1
[newbie] how to find and combine geographic maps with particular features?
SUMMARY: Specific problem: I'm regridding biomass-burning emissions from a global/unprojected inventory to a regional projection (LCC over North America). I need to have boundaries for Canada, Mexico, and US (including US states), but also Caribbean and Atlantic nations (notably the Bahamas). I would also like to add Canadian provinces and Mexican states. How to put these together? General
2011 Jan 17
2
Difficult with round() function
Dear list, I'm writing a function to re-grid a data set from finer to coarser resolutions in R as follows (I use this function with sapply/apply): gridResize <- function(startVec = stop("What's your input vector"), to = stop("Missing 'to': How long do you want the fnial vector to be?")){ from <- length(startVec) shortVec<-numeric() tics <- from*to