[Spdep-devel] Problem in creating neighbors, area and perimeter in spatial econometrics using R

[solmaz.ahmadi]

Hi. 

I'm working on a `spatial cross section model` with
`R-programming-language `. I'm running these codes which refers to
`anselin data` (spatial_columbus) in `spdep` package. I found them from
these links: 

MAIN PAGE :
https://sites.google.com/site/econometricsacademy/econometrics-models/spatial-econometrics


DATASET :
https://docs.google.com/file/d/0BwogTI8d6EEiZVdBSlgwdmFjTUk/edit?pli=1 

 library(spdep)# Loading required package: sp &Loading required package:
Matrix 

 data(Columbus) 

 mydata<-columbus 

 attach(mydata) 

 y<-cbind(CRIME) 

 x<-cbind(INC,HOVAL) 

 xy<-cbind(mydata$X, mydata$Y) 

 neighbors<-col.gal.nb 

 coords<-coords 

 summary(neighbors) 

When I used these codes for data (columbus) in `spdep` package,
everything is fine, but when I want apply them to my data (human capital
index) I'm not able to define `neighborhood` for my data . My problem is
in this line `( neighbor<-col.gal.nb)`.it's the neighbors list from an
original `GAL-format file` and it's a pre-defined file . I don't know
any codes for creating neighbors to my data and I think my data
framework is different from spatial Columbus data framework (There is
`AREA`, `PERIMETER`,`ID` and `POLYID` columns that I don't have these
columns in my data framework). 

The help link for `col.gal.nb` is here (you can open this link in R
environment after above codes) 

 http://127.0.0.1:20991/library/spdep/html/columbus.html 

MY QUESTIONS ARE: 

1. How can I use `ArcGIS` to create `AREA` and `PERIMETER` to my data
file? I have some counties as samples. Are any easier solution for
finding these values or I should only use `ArcGIS` for this purpose? 

2. Which code pack can I use to creating neighbors based on contiguity
and distance in `R`? 

My dependent variable is `HCI `and `Y` is latitude, `X` is longitude and
other variables are independent variables. 

My data set framework :
http://www.mediafire.com/view/lf43qm1h5ptztt6/spatial_columbus.csv 

Pre-defined framwwork :
http://www.mediafire.com/view/ml76tbrf6p69vkf/human_capital_index.csv 

Thank you so much for your kind helps. 

 
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