[Qgis-user] Issue with joining attributes by location

[Stefan Giese]

Hi Neil,

just a note to  your link: if you provide shapefiles, you'll have to put 
at least 3 files: CC4a_RegionsSub.shp, CC4a_RegionsSub.dbf and 
CC4a_RegionsSub.shx. (shp contains the geometry, dbf the attributes and 
shx is the index between shp and dbf)..

best regards

stefan

Mit freundlichen Grüßen
Stefan Giese
Projektleiter/Consultant
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Am 01.02.2018 um 05:42 schrieb Berg, Neil:
> Hi all,
>
> I’m working with (1) a CSV file containing columns of “lat” and “lon” 
> which represent grid cell centroids from a gridded model product over 
> California (“loca_lat_lon.csv”), and (2) a shape file that carves up 
> California into 12 distinct subregions (“CC4a_RegionsSub.shp”).
>
> These files can be accessed here:
>
> https://drive.google.com/drive/folders/1IUrpVSJYBRIoCS4vzGYK9sBEzdwZec-c?usp=sharing
>
> I am trying to determine which grid cells reside in each of the 12 
> subregions (or NA/NULL if outside all subregions) using Vector -> Data 
> Management Tools -> Join Attributes by Location. I have specified my 
> Target vector layer as loca_lat_lon.csv, the Join vector layer as 
> CC4a_RegionsSub.shp, the Geometric predicate as “intersects”, and am 
> taking attributes of the first located feature, and only keeping 
> matching records.
>
> The issue is that the returned joined layer assigns just 1 of the 12 
> subregions, “Sierra Nevada Mountains”, to all grid cells, rather than 
> different subregions (or None) to the cells.
>
> The shape file has a CRS of NAD83/California Albers and the 
> coordinates in the CSV file are simply WGS 84. I’ve tried resetting 
> the latter CRS to NAD83/California Albers, but the same issue persists.
>
> I’m using QGIS 2.18.14.
>
> Any help is greatly appreciated. Thanks in advance!
>
> Neil
>
>
>
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