[R-sig-Geo] merge Shape file

[Joseph Bechara]

Hi Robert, 

 

   I wanted to use the union but my shapefiles are not intersecting.

I want to combine 10 adjacent shapefiles.

Will “union“ work in this case?

 

 

JOSEPH BECHARA

Wildfire Management Program Coordinator

Ashrafieh 1020 Building, 8th floor, Mathaf, Beirut, Lebanon

Tel.: +961 (1) 426630-1-2

Fax: +961 (1) 426631

Mail:  <mailto:jbejjani at lri-lb.org> jbechara at lri-lb.org

 <http://www.lri-lb.org/> www.lri-lb.org

Description: Description: LRI-logo-Email

 

 

From: Robert J. Hijmans [mailto:r.hijmans at gmail.com] 
Sent: Wednesday, October 02, 2013 12:26 AM
To: Joseph Bechara
Cc: Roman Luštrik; R-sig-geo mailing list
Subject: Re: [R-sig-Geo] merge Shape file

 

Joseph, 

The merge in ArcGIS is actually the similar to sp::rbind as Barry pointed out. You probably want 'union'. rgeos has gUnion, and sptools (on R-Forge) has 'union' and other functions that extend rgeos by adding attribute table handling.

Robert

 

On Tue, Oct 1, 2013 at 6:35 AM, Joseph Bechara <jbechara at lri-lb.org> wrote:

Thanks Roman, 

 

I know the rgeos package but I’m not able to identify which tools can replace the merge of ArcGIS.

 

 

JOSEPH BECHARA

Wildfire Management Program Coordinator

Ashrafieh 1020 Building, 8th floor, Mathaf, Beirut, Lebanon

Tel.: +961 (1) 426630-1-2

Fax: +961 (1) 426631 <tel:%2B961%20%281%29%20426631> 

Mail:  <mailto:jbejjani at lri-lb.org> jbechara at lri-lb.org

 <http://www.lri-lb.org/> www.lri-lb.org

Description: Description: LRI-logo-Email

 

 

From: romunov at gmail.com [mailto:romunov at gmail.com] On Behalf Of Roman Luštrik
Sent: Tuesday, October 01, 2013 4:32 PM
To: Joseph Bechara
Cc: R-sig-geo mailing list


Subject: Re: [R-sig-Geo] merge Shape file

 

I think you want the `rgeos` package that offers a plethora of functions to work with "features".

 

Cheers,

Roman

 

 

On Tue, Oct 1, 2013 at 3:25 PM, Joseph Bechara <jbechara at lri-lb.org> wrote:

Dear Bary, 

 

Actually I have to do a geometrical merge operation.

I’m looking for the equivalent of “merge” in ArcGIS.

 

JOSEPH BECHARA

Wildfire Management Program Coordinator

Ashrafieh 1020 Building, 8th floor, Mathaf, Beirut, Lebanon

Tel.: +961 (1) 426630-1-2

Fax: +961 (1) 426631 <tel:%2B961%20%281%29%20426631> 

Mail:  <mailto:jbejjani at lri-lb.org> jbechara at lri-lb.org

 <http://www.lri-lb.org/> www.lri-lb.org

 

 

From: b.rowlingson at gmail.com [mailto:b.rowlingson at gmail.com] On Behalf Of Barry Rowlingson


Sent: Tuesday, October 01, 2013 4:04 PM
To: Joseph Bechara
Cc: R-sig-Geo at r-project.org
Subject: Re: [R-sig-Geo] merge Shape file

 

 

 

On Tue, Oct 1, 2013 at 12:25 PM, Joseph Bechara <jbechara at lri-lb.org> wrote:

I’m looking for a function to merge 2 shapefiles keeping them as “spatialPolygonsDataframe” class.

Any clue?

 

 

 

What do you mean by merge? If the two shapefiles have the same set of attributes then just read them into SpatialPolygonsDataFrames and do s12 = rbind(s1,s2), and you end up with a SPDF which has all the features from s1 and s2.

Or do you want to do some geometrical merge operation?

Barry

 


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