<div dir="ltr"><br><div class="gmail_quote"><br><div dir="ltr">Hi all,<div>I want to do spectral analysis on the attached data set on Cd15( cadmium taken from 15 cm soil depth) I use the following commands to check anisotropy and it seems that there is no anisotropy. But, I am much confused about how to fit wave variogram model for my data set so that I can use it for interpolation. There is no much literature available on periodic variogram and further analysis.</div><div>library(sp)</div><div>library(gstat) </div><div><div>coordinates(mt)<-~XCORD+YCORD</div><div>variogram(Cd15~XCORD+YCORD,mt, alpha=c(0,45,90,135))</div><div>plot(variogram(Cd15~XCORD+YCORD,mt, alpha=c(0,45,90,135)),type="b")</div></div><div><br></div><div>Please suggest any solution for this.</div><div>Regards</div><span class="HOEnZb"><font color="#888888"><div>Adeela</div><div><br></div></font></span></div>
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