[GRASS-stats] rgrass7 - SQLite and GML drivers not working for readVECT

[Roger Bivand]

New version submitted to CRAN; until then:

install.packages("rgrass7", repos="http://R-Forge.R-project.org")

should pick up the latest version; #3425 closed. Please report back 
whether this works ... (conditioning on GRASS version to create comparable 
driver name strings).

Roger

On Wed, 11 Oct 2017, Roger Bivand wrote:

> Thanks for trying to contribute. The GH site is not the rgrass7 
> development site - that is SVN on R-forge (GH is a very preliminary trial 
> site for using sf vector representation in R, and maybe raster raster 
> representation (or forthcoming stars), instead of sp classes).
>
> GRAS 7.2.2 works OK with the current logic checks; I can reproduce the 
> issue in 7.3 (latest); there is a change in vector/v.in.ogr/main.c 
> returning the DriverLongName for GDAL >= 2.0; in GRASS 7.2.2, there is no 
> such change. Could the GRASS developer responsible for this obvious 
> regression provide an additional flag in v.in.ogr (and v.external, 
> v.out.ogr) to permit backwards compatibility? See line 387, needs to 
> change
>
> #if GDAL_VERSION_NUM >= 2000000
>
> to add a !backwards_compatible test too.
>
> I'll hold off trying to fix this in rgrass7 because it is a regression. I 
> can add the backwards_compatibility=TRUE flag to readVECT() once it is 
> exposed.
>
> This is:
>
> https://trac.osgeo.org/grass/ticket/3425
>
> Roger
>
> On Tue, 10 Oct 2017, Ahmadou Dicko wrote:
>
>> In the readVECT function, internally v.in.ogr is used to list the supported
>> vector format and it is compared the format available using rgdal (or sf).
>> However, using v.external instead of v.in.ogr fix this single problem
>> because of the way the output is different (in form).
>> For example, if you use v.in.ogr you will have to compare 
> SQLite_/_Spatialite
>> (GRASS) to SQLite (R) and they are not the same.
>>
>> I tried to send a PR, let me know if it works
>>
>> https://github.com/rsbivand/rgrass7/pull/1
>>
>> Best,
>>
>> On Tue, Oct 10, 2017 at 9:29 PM, Helmut Kudrnovsky <hellik at web.de> wrote:
>>
>>>> Gesendet: Dienstag, 10. Oktober 2017 um 23:24 Uhr
>>>> Von: "Ahmadou Dicko" <dicko.ahmadou at gmail.com>
>>>> An: "Helmut Kudrnovsky" <hellik at web.de>
>>>> Cc: "Roger Bivand" <Roger.Bivand at nhh.no>, "grass-stats at lists.osgeo.org" <
>>> grass-stats at lists.osgeo.org>
>>>> Betreff: Re: [GRASS-stats] rgrass7 - SQLite and GML drivers not working
>>> for readVECT
>>>>
>>>> Hi everyone,
>>>>
>>>> I think that using v.external -f (instead of v.in.ogr -f) can fix this
>>> issue (didn't try yet)
>>>>
>>>>
>>>> execGRASS("v.external", flags = "f", intern = TRUE)
>>>> [1] "ARCGEN"         "AVCBin"         "AVCE00"
>>>> [4] "AeronavFAA"     "AmigoCloud"     "BNA"
>>>> [7] "CAD"            "CSV"            "CSW"
>>>> [10] "Carto"          "Cloudant"       "CouchDB"
>>>> [13] "DGN"            "DXF"            "EDIGEO"
>>>> [16] "ESRI_Shapefile" "ElasticSearch"  "GFT"
>>>> [19] "GML"            "GPKG"           "GPSBabel"
>>>> [22] "GPSTrackMaker"  "GPX"            "GeoJSON"
>>>> [25] "GeoRSS"         "Geoconcept"     "Geomedia"
>>>> [28] "HTF"            "HTTP"           "Idrisi"
>>>> [31] "JML"            "JPEG2000"       "KML"
>>>> [34] "MSSQLSpatial"   "MapInfo_File"   "Memory"
>>>> [37] "MySQL"          "ODBC"           "ODS"
>>>> [40] "OGR_GMT"        "OGR_GRASS"      "OGR_PDS"
>>>> [43] "OGR_SDTS"       "OGR_VRT"        "OSM"
>>>> [46] "OpenAir"        "OpenFileGDB"    "PCIDSK"
>>>> [49] "PDF"            "PGDUMP"         "PGeo"
>>>> [52] "PLSCENES"       "PostgreSQL"     "REC"
>>>
>>> in a quick check, there is no difference in available formats.
>>>
>>>
>>>
>>
>>
>>
>>
>
>

-- 
Roger Bivand
Department of Economics, Norwegian School of Economics,
Helleveien 30, N-5045 Bergen, Norway.
voice: +47 55 95 93 55; e-mail: Roger.Bivand at nhh.no
Editor-in-Chief of The R Journal, https://journal.r-project.org/index.html
http://orcid.org/0000-0003-2392-6140
https://scholar.google.no/citations?user=AWeghB0AAAAJ&hl=en