[R-sig-Geo] rgdal package for mac

[Gabriele Cozzi]

Hi Roger,
sorry for troubling and thanks for the very quick answer.

I did follow the guidelines from the CRAN page
# setRepositories(ind=1:2)
# install.packages('rgdal'),
but it did not work.

I was successful, however (with the same to lines of code), after 
shutting down and restating R...

============================================================

Gabriele Cozzi

Institute of Evolutionary Biology and Environmental Studies
Zurich University
Winterthurerstr. 190
8057 Zurich - Switzerland
E-mail: gabriele.cozzi at uzh.ch
Phone: ++41(0)44 6356116
Fax: ++41(0)44 6355711
http://www.ieu.uzh.ch
http://african-carnivores.com

Botswana Predator Conservation Trust
Private Bag 13
Maun - Botswana
E-mail: gab.cozzi at gmail.com
Mobile: +26774259312
http://www.bpctrust.org


On 17.05.2012 10:06, Roger Bivand wrote:
> On Thu, 17 May 2012, Gabriele Cozzi wrote:
>
>> Dear all,
>>
>> I am having issues installing the package "rgdal" on a Mac OS X (Lion).
>>
>> # install.packages("rgdal")
>>
>> actually says that there is no available package for R 2.15.0 (the 
>> version I am using at the moment). Yet I can successfully load the 
>> rgdal package on my old PC (also running R 2.15.0). Does it means 
>> rgdal is not implemented for mac? I find it hard to believe.
>
> Did you read the CRAN package page for rgdal? If you did, did you do 
> what it said:
>
> setRepositories(ind=1:2)
> install.packages('rgdal')
>
> to install from CRAN Extras?
>
> Don't jump to conclusions, do try to use the resources available to 
> reach well grounded solutions.
>
> We still hope that rgdal and rgeos will be available as regular CRAN 
> packages for OSX, but this seems to have stranded (again).
>
> Roger
>
>>
>> Any help would be appreciated.
>>
>> Best,
>> Gabriele
>>
>> ============================================================
>>
>> Gabriele Cozzi
>>
>> Institute of Evolutionary Biology and Environmental Studies
>> Zurich University
>> Winterthurerstr. 190
>> 8057 Zurich - Switzerland
>> E-mail: gabriele.cozzi at uzh.ch
>> Phone: ++41(0)44 6356116
>> Fax: ++41(0)44 6355711
>> http://www.ieu.uzh.ch
>> http://african-carnivores.com
>>
>> Botswana Predator Conservation Trust
>> Private Bag 13
>> Maun - Botswana
>> E-mail: gab.cozzi at gmail.com
>> Mobile: +26774259312
>> http://www.bpctrust.org
>>
>>
>> On 17.05.2012 09:15, Roger Bivand wrote:
>>> On Thu, 17 May 2012, Hodgess, Erin wrote:
>>>
>>>> Hello again.
>>>>
>>>> I'm having a little bit of trouble with spTransform (probably I'm 
>>>> doing it wrong), but here is what I'm doing:
>>>>
>>>>
>>>> Original data frame with UTM locations near Phuket, Thailand:
>>>>> test1.df
>>>>  Loc    east   north
>>>> 1   a 748.168 602.861
>>>> 2   b 754.302 615.609
>>>>> proj1 <- CRS("+proj=utm +zone=47N")
>>>
>>> Your points are 750m east and 600m north of the given projection 
>>> origin. If you meant km, set the units by adding +units=km to the 
>>> proj4string. However, this gives me:
>>>
>>>          coordinates Loc
>>> 1  (101.24, 5.44994)   a
>>> 2 (101.295, 5.56496)   b
>>>
>>> which is not on Phuket, so something else is wrong here. Do you know 
>>> definitely that the input coordinates are UTM zone 47? Reversing the 
>>> eastings and northings gets a bit closer:
>>>
>>>> proj1 <- CRS("+proj=utm +zone=47N +units=km")
>>>> coordinates(test1.df) <- c("north", "east")
>>>> proj4string(test1.df) <- proj1
>>>> spTransform(test1.df, CRS("+proj=longlat +datum=WGS84"))
>>>          coordinates Loc
>>> 1  (99.9308, 6.7677)   a
>>> 2 (100.046, 6.82295)   b
>>>
>>> but isn't there yet (reversed coordinate order does happen). What 
>>> was the source of the coordinates?
>>>
>>> Roger
>>>
>>>>> coordinates(test1.df) <- c("east","north")
>>>>> proj4string(test1.df) <- proj1
>>>>
>>>> Set up a spatial data frame
>>>>> test1.df
>>>>         coordinates Loc
>>>> 1 (748.168, 602.861)   a
>>>> 2 (754.302, 615.609)   b
>>>>> spTransform(test1.df, CRS("+proj=longlat +datum=WGS84"))
>>>>           coordinates Loc
>>>> 1 (94.518, 0.00543748)   a
>>>> 2 (94.518, 0.00555246)   b
>>>>>
>>>>
>>>> Now the answers should be about 8 degrees north and 98 degrees East.
>>>>
>>>> Any suggestions would be most appreciated.
>>>>
>>>> Sincerely,
>>>> Erin
>>>>
>>>>
>>>> Erin M. Hodgess, PhD
>>>> Associate Professor
>>>> Department of Computer and Mathematical Sciences
>>>> University of Houston - Downtown
>>>> mailto: hodgesse at uhd.edu
>>>>
>>>>
>>>>     [[alternative HTML version deleted]]
>>>>
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>>>>
>>>
>>
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