gt;
>> 2. Set the line to NA or 0.
>>
>> 3. Use clump() with directions=4.
>> Jacob
>>
>>
>>
>> From: Barry Rowlingson
>> To: Mathieu Rajerison
>> Cc: r-sig-...@stat.math.ethz.ch
>> Sent: Friday, 16 Se
acob
>
>
> ____
> From: Barry Rowlingson
> To: Mathieu Rajerison
> Cc: r-sig-...@stat.math.ethz.ch
> Sent: Friday, 16 September 2011, 17:51
> Subject: Re: [R-sig-Geo] [raster] a railroad, a raster with a different
> value on each side of it
>
September 2011, 17:51
Subject: Re: [R-sig-Geo] [raster] a railroad, a raster with a different value
on each side of it
If your railroad is just a single line feature running approx N-S then:
Create a box polygon for your study area, make sure the railroad just
crosses it at N and S edges
Use
On Fri, Sep 16, 2011 at 4:51 PM, Barry Rowlingson
wrote:
> If your railroad is just a single line feature running approx N-S then:
>
> Create a box polygon for your study area, make sure the railroad just
> crosses it at N and S edges
>
> Use rgeos functions overlaying the RR line with the box p
If your railroad is just a single line feature running approx N-S then:
Create a box polygon for your study area, make sure the railroad just
crosses it at N and S edges
Use rgeos functions overlaying the RR line with the box polygon to
create the E and W polygons
Job done?
On Fri, Sep 16, 2
Hi List,
I've got a railroad shapefile and a corine land cover raster.
I'd like to perform a land cover comparative analysis between the west side
of the railroad and the right side.
To do that, I tried first to have a raster with values=1 when on the east
and 0 when on the west.
But my calcula
