search for: reprojections

...g: spPoint <- SpatialPoints(coords=coordinates(Data),proj4string=CRS("+proj=longlat +datum=WGS84")) and then reprojecting it to Berhmann with: spPointReprj=spTransform(Data,CRS("+proj=cea +lon_0=0 +lat_ts=30 +x_0=0 +y_0=0 +ellps=WGS84")) If I put the two outputs of the reprojections in the same map, they are off by few meters in the tropics by up to 40km in the poles. I decided to investigate how the reprojections are done and my calculations are different from both R and ArcGis: First, I calculated the radious of the Earth in two different ways: =Re * (1 - e^2)/ (1 - e^...

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)

Hi all, We followed some books and sample codes and did some EMM estimation, only to find it won't be able to generate 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

Saludos, estoy intentando usar la función reprojectHDF() ( http://r-gis.net/?q=ModisDownload). #### source('ModisDownload.R') library(raster) library(RCurl) path<-"~/R/MODIS/Data/Test" input<-list.files(path,"*.hdf",all.files=T,recursive=T,full.names=T) input outname<-paste(substr(input[1],40,45),".tif",sep='') outname

In the manual page for prcomp(), it says that sdev is "the standard deviations 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

> > Hi, > > I used > GDALinfo("MOD13Q1.A2001049.h13v11.005.2007002215512.250m_16_days_EVI.tif") and > got the results: > > rows 10 > columns 11 > bands 1 > origin.x 150701.4 > origin.y 7744897 > res.x 250 > res.y 250 > ysign -1 > oblique.x 0 > oblique.y 0 > driver GTiff >

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

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

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