[Qgis-user] Lookgin for two shape editting tools

[Nicolas Cadieux]

Looks like the second option was the right on.

https://gis.stackexchange.com/questions/323376/adding-location-of-start-and-end-points-to-the-attribute-table/323377#323377

Nicolas Cadieux
https://gitlab.com/njacadieux

> Le 13 mai 2021 à 10:52, Nicolas Cadieux <njacadieux.gitlab at gmail.com> a écrit :
> 
> Hi,
> 
> Create a new field in the field calculator and I would try something like geom_to_wkt(start_point) or geom_to_wkt(start_point($geometry)).  I cannot test on my end.  end_point should refer to the last node.
> 
> Nicolas
> 
> https://docs.qgis.org/3.16/en/docs/user_manual/working_with_vector/functions_list.html?highlight=start_point#geometry-functions
> 
> Nicolas Cadieux
> https://gitlab.com/njacadieux
> 
>>> Le 13 mai 2021 à 10:20, Camilo Aristizabal <aristizabalcamilo at ymail.com> a écrit :
>>> 
>> 
>> Hi Nicolas
>> 
>> Thank you for your attention.
>> 
>> I'm going to try the second and third tips you sent me, and I'll inform you.
>> 
>> But the first one is just that I'm trying to avoid because I need to report both, the start and the end of coordinates of the lines in the same *.dbf of the vector line, and not in a second shapefile of points.
>> 
>> Could you help me to find the correct tool?
>> 
>> Best regards.
>> 
>> Camilo Aristizabal
>> 
>> 
>> Em quarta-feira, 12 de maio de 2021 23:42:31 BRT, Nicolas Cadieux <njacadieux.gitlab at gmail.com> escreveu:
>> 
>> 
>> See below 
>> 
>> Nicolas Cadieux
>> https://gitlab.com/njacadieux
>> 
>>>> Le 12 mai 2021 à 14:38, Camilo Aristizabal <aristizabalcamilo at ymail.com> a écrit :
>>>> 
>>> 
>>> Dear all
>>> 
>>> I'd like to do the next set of edition tasks:
>>> 
>>> 1) Add XY coordinates at both the start and the end of lines in a shapefile (avoiding to create or extract a second point-shape of specific vertices).
>> 
>> You can extract specific vertices and then use the field calculator to get the coordinates 
>> 
>> https://docs.qgis.org/3.16/en/docs/user_manual/processing_algs/qgis/vectorgeometry.html#extract-specific-vertices
>> 
>>> 2) Extract the envelope or to poligonize just the border of a cloud of points(shapefile)... Similar to such with which do it from a raster in the GDAL Raster Conversion tool.
>> 
>> This can be done with a concave hull.  A better alternative are the boundary tools in Lastools.
>> 
>>> 3) Create 'string' or 'text' fields with much more than 4000 characters of width inside the shapes, not only 255.
>> 
>> I you use a file format like geopackage, you will not be limited to 255 like the shapefiles.
>> 
>>> 
>>> Could you, guys please, help me to find the right paths?
>>> 
>>> Thanks!
>>> 
>>> Camilo Aristizabal
>>> 
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