Bug in raster::crop?

Wed, May 2, 2018 2:13 AM

I tried that too, but I am still getting the error.

Alzira Ramos writes:

Maybe, you need to add raster::extent(c(-160,10,30,60))

r <- raster(nrow=45, ncol=90)
r[] <- 1:ncell(r)
e <- raster::extent(-160, 10, 30, 60)
rc <- crop(r, e)


On 2 May 2018 at 10:58, Julian M. Burgos <julian.burgos at hafogvatn.is> wrote:

No, I am still getting the same error, either using
extent(c(-160,10,30,60)) or extent(-160,10,30,60).  I can crop polygons
with no problem.  The strange thing is that it was working fine until a
couple of days ago.  I am not sure what changed...


Vijay Lulla writes:

Works for me too...with same versions of everything.  Maybe you can try e
<- extent(c(-160,10,30,60)) ?  Apparently, ?`extent` states that it needs
either a Raster, Extent, matrix, or vector of four numbers.  I don't
understand why extent(-160,10,30,60) worked for me though!

On Tue, May 1, 2018 at 3:44 AM, Barry Rowlingson <
b.rowlingson at lancaster.ac.uk> wrote:

Works perfectly for me, with the same versions of everything:

    r <- raster(nrow=45, ncol=90)
     r[] <- 1:ncell(r)
     e <- extent(-160, 10, 30, 60)
     rc <- crop(r, e)

packageVersion("raster")

[1] ?2.6.7?

version

               _
platform       x86_64-pc-linux-gnu
arch           x86_64
os             linux-gnu
system         x86_64, linux-gnu
status
major          3
minor          4.4

Can you get crop to work on anything?

Barry




On Tue, May 1, 2018 at 8:22 AM, Julian M. Burgos <
julian.burgos at hafogvatn.is

wrote:

Hello everyone,

I am getting this error when using the crop function in the raster
package.  Here is an example, sing the example in the help file:

r <- raster(nrow=45, ncol=90)
r[] <- 1:ncell(r)
e <- extent(-160, 10, 30, 60)
rc <- crop(r, e)

Error in extent(extent) : insufficient number of elements (should be

4)

I am using R version 3.4.4., and raster 2.6-7.

Many thanks,

Julian

--
Julian Mariano Burgos, PhD
Hafranns?knastofnun, ranns?kna- og r??gjafarstofnun hafs og vatna/
Marine and Freshwater Research Institute
Botnsj?varsvi?s / Demersal Division
Sk?lagata 4, 121 Reykjav?k, Iceland
S?mi/Telephone : +354-5752037
Br?fs?mi/Telefax:  +354-5752001
Netfang/Email: julian.burgos at hafogvatn.is

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--
Julian Mariano Burgos, PhD
Hafranns?knastofnun, ranns?kna- og r??gjafarstofnun hafs og vatna/
Marine and Freshwater Research Institute
Botnsj?varsvi?s / Demersal Division
Sk?lagata 4, 121 Reykjav?k, Iceland
S?mi/Telephone : +354-5752037
Br?fs?mi/Telefax:  +354-5752001
Netfang/Email: julian.burgos at hafogvatn.is