hi, am doing a spatio-temporal variogram and am getting this error below
that i have no response variable in my data set even though it is there. my
data am calling gdata and the response variable is pfpr. i have tried the
code below with no access. the summary of my data is as follows:
> summary(gdata)
Object of class STFDF
with Dimensions (s, t, attr): (438, 21, 1)
[[Spatial:]]
Object of class SpatialPoints
Coordinates:
min max
Long -16.718 -13.8500
Lat 13.176 13.7915
Is projected: NA
proj4string : [NA]
Number of points: 438
[[Temporal:]]
Index timeIndex
Min. :1990-01-01 Min. : 1
1st Qu.:1994-12-31 1st Qu.: 6
Median :1999-12-30 Median :11
Mean :1999-12-30 Mean :11
3rd Qu.:2004-12-28 3rd Qu.:16
Max. :2009-12-27 Max. :21
[[Data attributes:]]
Min. 1st Qu. Median Mean 3rd Qu. Max. NA's
0.0 1.0 4.0 10.1 13.0 330.0 8640
> s=variogram(gdata@data~1, gdata)
|
|
| 0%Error in .subset2(x, i, exact = exact)
: no such index at level 1
> s=variogram(pfpr~1, gdata)
|
|
| 0%Error in gstat.formula(d$formula,
d$data) :
no response variable present in formula
In addition: Warning messages:
1: In min(x) : no non-missing arguments to min; returning Inf
2: In max(x) : no non-missing arguments to max; returning -Inf
3: In min(x) : no non-missing arguments to min; returning Inf
4: In max(x) : no non-missing arguments to max; returning -Inf
>
can anyone help?
J
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