search for: etopo5

...astline data found in the mapdata package. In the following code, I have also used the mapproj library which provides the map.grid function for drawing lat/lon lines on map projections. rm(list=ls()) library(maps) library(mapdata) library(geomapdata) library(mapproj) (2) Load the variables data(ETOPO5) xf <- attr(ETOPO5,'lon') # all lon yf <- attr(ETOPO5,'lat') # all lat zf <- ETOPO5 # elevation (3) The topography data has to be flipped horizontally and vertically and you also require the data to be placed on a regular grid and you need to specify limits, xn <- whic...

...Moreover, only a small minority of all the postal code areas has a measurement sation. Are there any ways/tools to "interpolate" the various (strategically chosen) measurement stations? I am looking for sensible ways to create plots like this: http://matplotlib.github.com/basemap/_images/etopo5.png > sessionInfo() R version 2.11.1 (2010-05-31) i686-pc-linux-gnu ...   Thank you in advance! Cheers!! Albert-Jan ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ All right, but apart from the sanitation, the medicine, education, wine, public order, irrigation, ro...

Hello, The other day Justin Peter presented a mini program to plot a topographic map with an overlay of the worldHires. I seemed interesting so I checked the ETOPO5 site and find that there is a new file ETOPO1 with a 1 minute grid. I downloaded it and tried a similar procedure. Now the ETOPO1.gz is 1 Gb and the uncompressed file is 5 Gb. They do not fit into my laptop. I tried the following program that works, but it takes too long to read the file, Now the q...