search for: reprojection

Displaying 9 results from an estimated 9 matches for "reprojection".

2012 Sep 02
1
why variations in accuracy between R to ARCGIS for the same point reprojection?
Hi everyone, I wonder if anyone knows the reason why the outputs of the same reprojection in r and arcgis are different?. The magnitude of the change can be up to 40 km in the poles. Basically, I have a database of points equally separated by one degree over the globe. In ARCGIS, I am projecting the data in GCS-WGS-1984 and then reprojected it to Berhmann to ensure equal area dis...
2012 Oct 18
2
Re-projecting geotiff
Dear R users, I'm currently trying to re-project a geotiff in another coordinate system. For instance, I have a tif image in UTM 19 zone which I would like to reproject into UTM 18. I was wondering if it was possible in R. Furthermore, I looked into 'rgdal' package, but I can't really find out if I'm doing the right thing. So far, here is what I'm doing: library(rgdal)
2008 Feb 28
2
EMM: how to make forecast using EMM methods?
...e forecast. This is because in the stochastic volatility models we are estimating, the volatilities are latent variables, and we want to forecast 1-step ahead or h-step ahead volatilities. So it is nice to have the system estimated, but we couldn't get it to forecast at all. There is a "Reprojection" Method described in the original EMM paper, but let's say we reproject to a GARCH(1,1) model, then only the GARCH(1, 1) parameters are significant, which basically means we degrade the SV model into a GARCH model. There is no way to do the forecast... Could anybody give some pointers? T...
2014 Jul 29
2
Ayuda por favor
...a el siguiente mensaje de error: #### > reprojectHDF(hdfName=input,filename=outname,MRTpath="~/MRT/bin", + resample_type="NEAREST_NEIGHBOR", + proj_type="GEO",datum='WGS84') ****************************************************************************** MODIS Reprojection Tool (v4.1 March 2009) Start Time: Tue Jul 29 00:57:18 2014 ------------------------------------------------------------------ Error: ReadHDFHeader : Opening Input Header File : Unable to open /home/rral/R/MODIS/Data/Test//home/rral/R/MODIS/Data/Test/MOD13Q1.A2000065.h09v08.005.2008238073751.hdf Fa...
2012 Jun 20
1
prcomp: where do sdev values come from?
...of the principal components (i.e., the square roots of the eigenvalues of the covariance/correlation matrix, though the calculation is actually done with the singular values of the data matrix)." ?However, this is not what I'm finding. ?The values appear to be the standard deviations of a reprojection of the data, as in the example below. > test=matrix(data=c(1,1,2,2,0,0,2,1,2,1,0,2,1,2,1,2,2,0),nrow=3,ncol=6) > test=standardize(test) > test [,1] [,2] [,3] [,4] [,5] [,6] [1,] -0.7071068 2.828427 0.8944272 0 -0.7071068 1.414214 [2,] -0.7071068 -1.4...
2012 Mar 27
1
Rgdal package - get information
...e > /MOD13Q1.A2001049.h13v11.005.2007002215512.250m_16_days_EVI.tif > apparent band summary: > *GDType* Bmin Bmax Bmean Bsd hasNoDataValue NoDataValue > 1 *Int16* -32768 32767 0 0 FALSE 0 > Metadata: > AREA_OR_POINT=Point > TIFFTAG_SOFTWARE=MODIS Reprojection Tool v4.1 March 2009 > > > > *How to read the information GDType?* > Thanks, julio [[alternative HTML version deleted]]
2012 Aug 08
1
map axis on projected shapefiles
Hi, I have overlayed 2 projected shapefiles using the "plot" function. When I plot them the numbers next to the x-axis ticks are printed in scientific format (e.g. -4e+05, -3e+05,...,), and the problem is these dont match up to the projected point locations I also wish to overlay from my dataset. For example, according to the x-axis ticks the prime meridian (0?) is in totally the
2009 Jul 16
2
Problems generating image from tiff file
I imported the attached tiff file and converted the coordinate system to long lat and graphed it: californiatiff<- readGDAL("california1.tif") proj4string(californiatiff) > rasterprojection <- spTransform(californiatiff, CRS("+proj=longlat") however, when using the plot command for rasterprojection, I get a blob. I can see the outline of the state of california and
2012 May 31
1
maptools: using to sets of information (within two shape files) for one plot
Dear all, I am using a shape file containing the information regarding the borders of the PARISHES of Austria. I created a plot with different colours for different percentages of child care institutions. Now I would like to add the information of the COUNTY boundaries to this plot which I have got in another shape file. I would like these boundaries to be shown with bold lines so that they can