[Qgis-user] Lookgin for two shape editting tools

[Nicolas Cadieux]

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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