[Qgis-user] 200717 - How do I enclose an orthogonal grid of points with a polygon boundary.

[Paul T A Drea]

Hello list,

I hope this finds everyone safe and healthy during these trying times.

I am using a MacBook Pro running macOS 10.15 (Catalina).

QGIS version 3.14.0-Pi. QGIS code revision 9f7028fd23.

I have a shp file containg 2 653 337 points in an orthononal grid with 
25m x 100m spacing of the points.

The grid is oriented north south. These points are in lines spaced 25m 
in the easting (X) direction and 100m northing (Y) direction.

I would like to apply a polygon as a boundary (red) as shown in the 
screen grab below.


I have not been able to achieve this using convex hull as the final 
output does not take into acount the sawtooth steps.

Any help or pointers would be appreciated thanks.
I am not a coder and have no knowledge of writing any scripts.

Thanks and Best regards,
Paul


-- 

*/Paul T. A. Drea/*

*Geodetic Consultant*

*Cell Greece: +30-698 052 0611*

*Cell Abu Dhabi: +971 50 595 6547*

*Cell U.K.: +44 7507 975162*

*SKYPE: paul.drea*

*e**-mail 1: **pauldrea at gmail.com* <mailto:pauldrea at gmail.com>

*e**-mail 2: **ptadrea at otenet.gr* <mailto:ptadrea at otenet.gr>

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