[GRASS-user] R, Moran index, getis e ord.....

GRASS GRASS user
1

Hello everyone.

I have a raster which is the result of calculating an index of remote
sensing (with decimals).

I would like to calculate the Moran's index and the index of Getis and Ord

To do this I installed R (following
http://grass.fbk.eu/statsgrass/grass6_r_install.html).
Then I installed the packages

install.packages("spdep",dependencies=TRUE)
install.packages("maptools",dependencies=TRUE)

Then from the shell:

R

Then load these libraries

library(spgrass6)
library(spdep)
library(maptools)
library(boot)
library(Matrix)
library(lattice)

I read the raster

index_water_2009<-readRAST6("index_water_2009")

At this point I stopped. I saw on the mailing list and some tutorials.

I can not understand the syntax to use.

It only works on vector?

Someone can give me some help?

Thanks
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2

Maybe http://www.asdar-book.org/ can help you. Have a look in “Additional materials”.

Robbie

2010/9/30 Gabriele N. <gis.gn@libero.it>

Hello everyone.

I have a raster which is the result of calculating an index of remote
sensing (with decimals).

I would like to calculate the Moran’s index and the index of Getis and Ord

To do this I installed R (following
http://grass.fbk.eu/statsgrass/grass6_r_install.html).
Then I installed the packages

install.packages(“spdep”,dependencies=TRUE)
install.packages(“maptools”,dependencies=TRUE)

Then from the shell:

R

Then load these libraries

library(spgrass6)
library(spdep)
library(maptools)
library(boot)
library(Matrix)
library(lattice)

I read the raster

index_water_2009<-readRAST6(“index_water_2009”)

At this point I stopped. I saw on the mailing list and some tutorials.

I can not understand the syntax to use.

It only works on vector?

Someone can give me some help?

Thanks

View this message in context: http://osgeo-org.1803224.n2.nabble.com/R-Moran-index-getis-e-ord-tp5588509p5588509.html
Sent from the Grass - Users mailing list archive at Nabble.com.

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3

Thanks Robbie.

I try to take a look.

Gabriele
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