<div dir="ltr">Dear Jon and Roman<div><br></div><div>Thanks for the reply.</div><div><br></div><div>Im attaching the code.</div><div><br></div><div>You may be right that the variogram may be problematic but it fitted well visually.</div><div><br></div><div>I think also that the prediction grid was not well created. I wiould be grateful to have to hints.code how to create a useful grid and also for the spplot or other alternatives</div><div><br></div><div>I can send more info if required.</div><div><br></div><div>Cheers</div><div><br></div><div>Anand</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Aug 4, 2015 at 1:39 PM, Jon Skoien <span dir="ltr"><<a href="mailto:jon.skoien@jrc.ec.europa.eu" target="_blank">jon.skoien@jrc.ec.europa.eu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
Hi,<br>
<br>
You have attached some data, but we still dont know exactly what you
do with the data (do you use the logarithm, how many bins, did you
project the data set...?). However, having had a quick look using
the LatLong coordinates (not really recommended), I can see that the
variogram from this data set is not particularly well defined, and
it could well be that you fitted a model with pure nugget effect. In
that case you will get the same prediction everywhere and no color
differences. <br>
<br>
Have a look at <br>
> summary(map)<br>
and particularly the summary of var1.pred. <br>
You could also plot the variogram of the data together with your
model, vmf, and see how they fit. <br>
<br>
I am not sure what you mean by not being able to create a prediction
grid with data included. Do you mean that you want a grid which
exactly overlays some of the data points? Matching one point should
not be difficult, 2 and 3 should be possible, but you might get some
problems with precision (FAQ 7.31). <br>
<br>
Best wishes,<br>
Jon<div><div class="h5"><br>
<br>
<br>
<br>
<div>On 8/3/2015 5:30 PM, Anand Sookun
wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hi
<div><br>
</div>
<div>Thank you Roman for your kind response.</div>
<div><br>
</div>
<div>The data is as attached which is part of the whole dataset.</div>
<div><br>
</div>
<div>My other problem is that im not able to create an
appropriate prediction grid with some data included.</div>
<div><br>
</div>
<div>The codes which failed to show colour ramps are</div>
<div><br>
</div>
<div>map <- krige(logcarbseq ~ 1, locations = carbon_seq,
newdata = map,model = vmf)</div>
<div>str(map)</div>
<div>print(spplot(map, "var1.pred", asp=1,
col.regions=bpy.colors(64),main="OK prediction, carbon")) </div>
<div>print(spplot(map,
"var1.var",col.regions=cm.colors(64),asp=1, main="OK
prediction variance, carbon"))</div>
<div><br>
</div>
<div>I look forward to hopefully get some solutions.</div>
<div><br>
</div>
<div>Thanks again and warm regards</div>
<div><br>
</div>
<div>Anand</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Mon, Aug 3, 2015 at 4:09 PM, Roman
Luštrik <span dir="ltr"><<a href="mailto:roman.lustrik@gmail.com" target="_blank">roman.lustrik@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">What is the variability of the plotted
variable?
<div><br>
</div>
<div>Cheers,</div>
<div>Roman</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote"><span>On Sun, Aug 2,
2015 at 11:03 AM, Anand Sookun <span dir="ltr"><<a href="mailto:asookun@gmail.com" target="_blank"></a><a href="mailto:asookun@gmail.com" target="_blank">asookun@gmail.com</a>></span>
wrote:<br>
</span>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span>Hi<br>
<br>
I have kriged my data but the map shows uniform
colours - no gradual<br>
contour colour plot on map<br>
<br>
code: print(spplot(k40, "var1.pred", asp=1,<br>
col.regions=bpy.colors(64),main="OK prediction,
log-ppm Zn"))<br>
<br>
thnaks for any help<br>
<br>
Anand Sookun<br>
--<br>
-------------------------------------------------------<br>
</span>
*Anand Sookun (**MPhil. **PhD Candidate, University of
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