Re: [netcdfgroup] NetCDF OPeNDAP , R and Windows

sorry for the extra post, I quoted the relevant email address incorrectly,
should be:

Peter Herman <Peter.Herman@xxxxxxxxxxx>



On Tue, Jun 13, 2017 at 11:23 AM, David W. Pierce <dpierce@xxxxxxxx> wrote:

> Hi Bill,
>
> I'm the developer of the R package ncdf4. I recently received a message
> from  Peter Herman <Peer.Herman@xxxxxxxxxxx> on this subject, and I
> suggest you might want to correspond directly with him, as I believe he has
> developed a solution for accessing OpenDap files with ncdf4 under Windows .
> Below is my message to Peter for context:
>
> ----
>
> Dear Peter,
>
> I thank you for your herculean work on this task. Having tried to go
> through some of this kind of work before, I know that it is not easy!
>
> The way that the R project folks have chosen to set up the R project, I am
> not allowed to submit or provide any libraries, for example for Windows. (I
> assume they take this approach for security purposes.) The procedure is
> that I submit the generic source code, and then R project personnel (I'm
> not sure who) use that source code on a Windows machine they have to
> compile/create the binary windows version of the ncdf4 package. So I do not
> have any input or influence on the Windows package building process.
>
> If I'm understanding you correctly, the central part of the changes you
> had to make were in the Windows compiling part. So I unfortunately must
> direct you to the R project folks if you'd like to get your changes
> incorporated into the final ncdf4  windows binaries, as I have no influence
> on that part of the process.
>
> Of course, if there are some changes needed to the generic source code to
> support the Windows build, I can put those in the part of the package I
> maintain.
>
> With regards,
>
> --Dave
>
>
> On Tue, Jun 13, 2017 at 10:47 AM, Capehart, William J <
> William.Capehart@xxxxxxxxx> wrote:
>
>> Hello All:
>>
>>
>>
>> I have undergrad students working with the R package with tablet PCs
>> running Windows that are issued by the university via RStudio since that is
>> what they will be trained on when they take their stats coursework.  I am
>> trying to set things up so they can access data from our OPeNDAP server.
>>
>>
>>
>> However, when windows runs it they are hit with the following error
>> (which I also get on my windows build).
>>
>>
>>
>> Error in R_nc4_open: NetCDF: Unknown file format
>>
>> Error in nc_open(filename = URL_85) :
>>
>>   Error in nc_open trying to open file http://kyrill.ias.sdsmt.edu:80
>> 80/thredds/dodsC/testAll/TSA_RCP85_CONUS_1920-2100.nc4
>>
>>
>>
>> This happens with other OPeNDAP-strored files as well.
>>
>>
>>
>> All is well when working in the unix environment.  Windows, not so much.
>>
>>
>>
>> I have JFGI’ed for solutions that don’t involve Cygwin and am not finding
>> much of a solution.
>>
>>
>>
>> Is the problem with the developer of the R package or is the Windows
>> libraries not OPeNDAP-compatible by virtue of existing on the Windows side
>> of the game.
>>
>>
>>
>> Otherwise is there a solution that does not require downloading
>> everything?
>>
>>
>>
>> (And yes, I’ve pounded the table bringing in Macs as an official species
>> of laptop.  They keep saying no.)
>>
>>
>>
>> Cheers and Thanks Much
>>
>> ------------------------------------------------
>> Bill Capehart <William.Capehart@xxxxxxxxx>
>> Atmospheric and Environmental Sciences Program Coordinator
>> Civil and Environmental Engineering
>> 201 Mineral Industries Building
>> South Dakota School of Mines and Technology
>> 501 East St Joseph Street
>> Rapid City, SD 57701-3995
>> Ph: +1-605-394-1994 <(605)%20394-1994>   Mobile: +1-605-484-4692
>> <(605)%20484-4692>
>>
>> _______________________________________________
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>>
>>
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>
>
>
> --
> David W. Pierce
> Division of Climate, Atmospheric Science, and Physical Oceanography
> Scripps Institution of Oceanography, La Jolla, California, USA
> (858) 534-8276 (voice)  /  (858) 534-8561 (fax)    dpierce@xxxxxxxx
>



-- 
David W. Pierce
Division of Climate, Atmospheric Science, and Physical Oceanography
Scripps Institution of Oceanography, La Jolla, California, USA
(858) 534-8276 (voice)  /  (858) 534-8561 (fax)    dpierce@xxxxxxxx
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