[R-sig-Geo] ENFA scatter plot and SpatialPixelsDataFrame problem

[Michela Giusti]

Hi,
I have a problem with my ENFA scatter plot. You can find it below.

What did I do wrong?

I also have a problem with a SpatialPixelsDataFrame:

>SPDF_TOT_CR<-rbind.SpatialPixelsDataFrame(SPDF_monte_tuna,SPDF_isuela)
Error in if (max(object at grid.index) > .NumberOfCells(object at grid)) stop("grid.index max value too large") :
   missing value where TRUE/FALSE needed
In addition:Warning messages:
1: In points2grid(points, tolerance, round) :
   grid has empty column/rows in dimension 1
2: In points2grid(points, tolerance, round) :
   grid has empty column/rows in dimension 2
3: In getGridIndex(coordinates(points), grid) : NAs introduced by coercion



Thank you very much for your help.
Bye,
Michela


>enfa_CR_TOT$co

                           Mar           Spe1

aspect             -0.15611790 -2.364093e-04

BPI                -0.26189379   7.696597e-06

curvature           0.07022979   7.875935e-01

plan curvature      0.17703567 -3.891006e-01

profile curvature -0.02840416 -4.778044e-01

depth               0.47498377 -1.031100e-04

slope               0.48563437   6.090404e-05

TRI                 0.63914621 -2.342323e-05



scatter(enfa_CR_TOT, percent = 100, pts = F , clabel = 0.8)




>(randtestenfa_CR_TOT <- randtest(enfa_CR_TOT, nrepet = 500))

Monte-Carlo test

Call: randtest.enfa(xtest = enfa_CR_TOT, nrepet = 500)

  

Observation: 3.720003

  

Based on 500 replicates

Simulated p-value: 0.001996008

Alternative hypothesis: greater

  

     Std.Obs Expectation     Variance

  7.03676906   1.58379866   0.09215922





-- 
*****************************************************************
Dr. Michela Giusti
ISPRA
Istituto Superiore per la Protezione e la Ricerca Ambientale
Via Brancati, 60
00144 Roma
Tel. +390650074746
michela.giusti at isprambiente.it
*****************************************************************

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