Displaying 2 results from an estimated 2 matches for "variog4".
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2006 Jun 02
1
geoR, plot of variog4 lines incomplete
...m using R for Mac OSX version 1.14 (2129) and the geoR package
version 1.6-5 (the current version in the R repository). I'm running
R in OS 10.4.6 on a Mac G4 iBook (933MHz, 640 MB DDR SDRAM). I
searched the R archive and did not find a posting on this issue.
I want to use the variog and variog4 functions of geoR to
characterize the pattern of spatial autocorrelation of tree density
on a forest plot. But I get incomplete line plots when I plot the
output of variog4, compared to the plot for the output of variog. I'm
using the same geodata for each plot.
I've attached 2 gra...
2004 Sep 16
1
geoR/variog4() not returning all directions
Mac OS 10.3.5, R 2.0.0
latest version of geoR
I have an incomplete 5 x 20 spatial array of samples (60 out of 100
possible locations) for which I would like to calculate directional
variograms using variog4(). Unfortunately, I can't get it to return all
4 directions. It returns variograms for 45, 90, and 135 degrees,
omitting 0 degrees (pi/4, pi/2, 3pi/4, omitting 0). If I specify 0
degrees, it returns a variogram with (binned) distances of 1, 2, 3, and
4.
Any ideas what I am doing wrong, or...