[R-sig-Geo] Bug in raster::crop?

[Julian M. Burgos]

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
>> > Hafrannsóknastofnun, rannsókna- og ráðgjafarstofnun hafs og vatna/
>> > Marine and Freshwater Research Institute
>> > Botnsjávarsviðs / Demersal Division
>> > Skúlagata 4, 121 Reykjavík, Iceland
>> > Sími/Telephone : +354-5752037
>> > Bréfsími/Telefax:  +354-5752001
>> > Netfang/Email: julian.burgos at hafogvatn.is
>> >
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>>


--
Julian Mariano Burgos, PhD
Hafrannsóknastofnun, rannsókna- og ráðgjafarstofnun hafs og vatna/
Marine and Freshwater Research Institute
Botnsjávarsviðs / Demersal Division
Skúlagata 4, 121 Reykjavík, Iceland
Sími/Telephone : +354-5752037
Bréfsími/Telefax:  +354-5752001
Netfang/Email: julian.burgos at hafogvatn.is