and for some reason I am still getting the error that I have non-unique id's
eventhough i had deduped both of my files. Any idea why this would be
happening?
On Tue, May 5, 2009 at 10:16 AM, Alina Sheyman wrote:
>
> I'm still working on trying to combine two spatial files.
&g
llowing error message
Error in spRbind(spRbind(zipmaps1b, zipmaps1a)) :
error in evaluating the argument 'obj' in selecting a method for function
'spRbind'
I'm not sure what else I need to specify in my spRbind command
On Wed, Apr 29, 2009 at 12:32 PM, Roger Bivand
Aslo, this function seems to wipe out my file
zipmaps1a <- unionSpatialPolygons(zipmaps1, IDs=paste(zipmaps1$ZCTA,
zipmaps1$NAME, sep = " "))
when I run names(zipmaps1a), after I run the above command I get NULL
On Wed, Apr 29, 2009 at 12:11 PM, Alina Sheyman wrote:
> U
of data and Polygons IDs do not match
How do I find out what field R is treating as Polygon ID, so that I can set
my row.names to that?
On Wed, Apr 29, 2009 at 2:42 AM, Roger Bivand wrote:
> On Tue, 28 Apr 2009, Alina Sheyman wrote:
>
> I'm trying to combine two shapefiles using
I'm trying to combine two shapefiles using
zipmaps5 <- spRbind(zipmaps1,zipmaps2)
and getting the following error message
Error in spRbind(as(obj, "SpatialPolygons"), as(x, "SpatialPolygons")) :
non-unique polygon IDs
Does anyone know how I can get rid of duplicate polygons in a shapefile?
th
ng it that unionSpatialPolygons functions works very much in
the same way as merge, except with geographical data. Am I wrong in this
assumption?
On Wed, Apr 22, 2009 at 3:09 AM, Roger Bivand wrote:
> On Tue, 21 Apr 2009, Alina Sheyman wrote:
>
> Hi Roger,
>>
>
> Alina,
&
d there are potentially many ways to
> do it.
>
> One way to get started would be to follow the example(s) in the help page
> for the overlay() function in the sp package.
>
> -Don
>
>
> At 1:26 PM -0400 4/20/09, Alina Sheyman wrote:
>
>> I have a list of made
I have a list of made-up districts and corresponding zip codes. Based on
that I want to define my own polygons (for each district) and then use them
to create a map. Does anyone know how I would go about defining these?
thank you
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Hi all,
I'm looking for zip code shapefiles for Italy and France. Has anyone come
across these by any chance?
thank you!
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Does anyone know where I can find a shapefile with zipcodes for Boston
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"x" and "y"
> coordinates(meuse) = ~x+y # SpatialPointsDataFrame
>
> Then you can use overlay() to find out in which customer is in which
> polygon. Then you can count the number of customers per zip code.
>
> cheers,
> Paul
>
> Alina Sheyman schreef:
&
I'm very new to creating maps using shapefiles, so this question might be
pretty basic.
I'm trying to create a map of the US, divided up by zip codes, where i then
map number of customers by zip code.
I located shapefiles for US with zip codes (although at this point only for
individual states, an
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