On Wed, 6 Jan 2010, Noli Sicad wrote:
Hi,
I have problem transposing my database table which is to be merged /
joined with the shapefile file (*.dbf) inorder to have one-to-one
relationship with shapefile polygon. As we know that inorder for the
polygon to be rendered in GIS, it has to have one-to-ope relationship.
Review ?reshape to convert to wide format before trying to merge into
your object for using spplot().
Roger
One to many table:
Poly_ID Period Age
01 1 32
01 2 34
02 1 30
03 2 21
One to one table
Poly_ID Period1 Period2 Period3
01 32 34
02 30
03 21
04 35
Now, is it possible to use one-to-many table for mapping using spplot / plot?
The result data I am trying to map using spplot has 1 to 70 years
periods. I want to produce maps per period, for 10 years or more for
forest management regimes in forest stand.
Any alternative?
Thanks in advance.
Noli
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--
Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Helleveien 30, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
e-mail: roger.biv...@nhh.no
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