Hi Zia,

I suggest you give a look o GRASS.

bests

miltinho

On Tue, Jan 19, 2010 at 6:59 PM, Zia Ahmed <zua3@cornell.edu> wrote:

> 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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>

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