Hello,
Have a look at spRbind-methods {maptools package}
It may work for what you want (someone will correct me if I'm wrong).
But, almost for sure, GRASS will be faster (look at the spgrass6 package)
Best regards
Alex
-----Original Message-----
From: Zia Ahmed <z...@cornell.edu>
To: sig-geo <r-sig-geo@stat.math.ethz.ch>
Date: Tue, 19 Jan 2010 18:59:53 -0500
Subject: [R-sig-Geo] Merging shape files?
Hi:
I like use R for data mining, organization, manipulation and mapping of
SSURO data of USA. I have already done first two; I need help for
mapping these data.in R It will be appreciated if someone helps me to
solve following three issues:
*1. How do I merge several shape files?*
I like to merge several shape files to create a single shape file. All
files are same structure but different names and in different folders.
Below I mentioned how all shape files are organized in different folder.
I want to write a function that I can use to merge the shape files.
*File organization:*
.../State_name/soil_ia001/spatial/file_name01.shp
.../State_name/soil_ia003/spatial/file_name03.shp
.../State_name/soil_ia005/spatial/file_name05.shp
.
. .../State_name/soil_ia21/spatial/file_name21.shp
*DBF file associated all shape files look like below: *
ID AREASYMBOL SPATIALVER MUSYM MUKEY
1 IA001 2
822D2 402210
2 IA001 2
24C2 402161
3 IA001 2
93D2 402217
4 IA001 2
W 1857266
5 IA001 2
W 1857266
6 IA001 2
370C 402177
7 IA001 2
570B 402190
-------
*
2. My second question is: I like to join a table with this above
mentioned shape using a conmen ID like MUKEY. How do I do this?*
*3. My third question is: how do I convert this shape file to a
grid (as a TIFF format or others? ) that I open some other software?*
Thanks
Zia
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Alexandre Villers
PhD. Candidate
Team Agripop
CEBC CNRS UPR 1934
79360 Beauvoir sur Niort
Phone: +33 (0)549 099 613
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