Converting csv files to SpatialPolygonsDataFrame

Dear Ahmed,

A SpatialPolygons object is more complex than just a set of coordinates. I
suggest that you read the helpfile of SpatialPolygonsDataFrame. The example
in the helpfile for the SpatialPolygonsDataFrame class should be clear
enough.

Best regards,

ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature and
Forest
team Biometrie & Kwaliteitszorg / team Biometrics & Quality Assurance
Kliniekstraat 25
1070 Anderlecht
Belgium

To call in the statistician after the experiment is done may be no more
than asking him to perform a post-mortem examination: he may be able to say
what the experiment died of. ~ Sir Ronald Aylmer Fisher
The plural of anecdote is not data. ~ Roger Brinner
The combination of some data and an aching desire for an answer does not
ensure that a reasonable answer can be extracted from a given body of data.
~ John Tukey

2016-09-28 21:07 GMT+02:00 Ahmed Najar <najar at ualberta.ca>:

I was trying to convert a csv file to SpatialPolygonsDataFrame and I was
encountering several problems. Would you have any case study that I could
follow.

I used this script and keep getting the following error

AB <- read.csv("map_AB.csv")> AB=na.omit(AB)> X =

SpatialPolygonsDataFrame(AB[,1:2], data = AB)Error in
SpatialPolygonsDataFrame(AB[, 1:2], data = AB) :
  trying to get slot "polygons" from an object (class "data.frame")
that is not an S4 object



Most grateful for any help.

Cheers,

Ahmed

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