Hi,
I’m the field calculator, you could also update the <geometry> field using wkt.
If this was a line, you would use
>
> Geom_from_wkt('LINESTRING (' || "x1" || ' ' || "y1" || ',' || "x2" || '
> ' || "y2" || ')')
>
Google wiki and WKT geometry and you will see how you could make a point, line,
polygon... you could also use this same syntax in a csv and import the csv.
Nicolas Cadieux
https://gitlab.com/njacadieux
> Le 26 nov. 2020 à 10:03, Totò Fiandaca <[email protected]> a écrit :
>
> From Processing:
>
> search for Geometry by Expression:
> 1. as input layer put your file with the coordinates
> 2. and write this expression:
>
> make_polygon (
> make_line (
> make_point ("x1", "y1"),
> make_point ("x2", "y2"),
> make_point ("x3", "y3"),
> make_point ("x4", "y4")
> ))
>
> and launch the geoprocess.
>
> I used QGIS 3.16 Hannover
>
> Il giorno gio 26 nov 2020 alle ore 15:48 Ryan Peel <[email protected]> ha
> scritto:
>> I have a csv/table that has a single row that contains some metadata as well
>> as four SEPARATE columns, x1, y1, x2, y2, x3, y3, x4, y4 of decimal degree
>> coordinates.
>>
>> I want to import all of this data into QGIS and create a polygon from the
>> four points as a vector layer.
>>
>> What is the best way to do this? I'm not a programmer or scripter really
>> and fairly new to QGIS.
>>
>> Thanks!
>>
>>
>> Ryan Peel
>>
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>
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