Hello, 
To make things short, I have a device which gathers data in the fields 
(hundreds of data per second), and gets the position through a GPS (every 
second). 

Between 2 GPS positions, I triangulate the positions, so the points are 
aligned. 

Sometimes, the device "writes" the data so it spends some time doing so, and it 
does not gather anything, so I have a "hole". 



Then, to visualize the data, I create a Shapefile, only with Points. 



In one Shapefile, I had some strange points: points that appear on the map, but 
are not clickable and disappear when I zoom in too much. I attach the files ; 
they can be downloaded here, too: https://www.grosfichiers.com/sjNC3yx7Kvi 


For instance, in the file I join, the position number 1613 and further are 
problematic. If my viewing area includes the point 1612, I see all the points, 
well aligned, but I cannot click points 1613 and further. 

If I zoom in, or if I move the area and the point 1612 is out of the area, I 
see nothing anymore. 

The code to generate the Shapefile has a systematic approach: it takes the 
points one after the other, and writes their position by incrementing the 
values. So I suspect there is no bug. 
In a previous test, the same problem occured BEFORE point 1217 : I could only 
see the first points if the area included point 1217. 


Questions: 
- can anyone try to see my shapefile and confirm the problem? 

- does this bug ring a bell to anyone? 
- what may be the problem? 



Thank you very much! 

My versions are detailled below. I just updated to the LTR to try to solve the 
problem, but the bug exists with the 3.22.7-Białowieża and 3.28.14-Firenze 
versions. 




Aurélie 





        
Version de QGIS         
3.28.14-Firenze         
Révision du code        
b09131c512 
        
Version de Qt   
5.15.3 
        
Version de Python       
3.9.5 
        
Version de GDAL/OGR     
3.8.2 
        
Version de Proj         
9.3.1 
        
Version de la base de données du registre EPSG  
v10.098 (2023-11-24) 
        
Version de GEOS         
3.12.1-CAPI-1.18.1 
        
Version de SQLite       
3.41.1 
        
Version de PDAL         
2.6.0 
        
Version du client PostgreSQL    
unknown 
        
Version de SpatiaLite   
5.1.0 
        
Version de QWT  
6.1.6 
        
Version de QScintilla2  
2.13.4 
        
Version de l'OS         
Windows 10 Version 2009 
        
        
        
        

        
Extensions Python actives 
        
QGeoloGIS       
1.9.0 
        
db_manager      
0.1.20 
        
grassprovider   
2.12.99 
        
MetaSearch      
0.3.6 
        
processing      
2.12.99 
        
sagaprovider    
2.12.99 




======= Previously ========= 



        
Version de QGIS         
3.22.7-Białowieża       
Révision du code        
5a65627a 
        
Version de Qt   
5.15.3 
        
Version de Python       
3.9.5 
        
Version de GDAL/OGR     
3.4.3 
        
Version de Proj         
9.0.0 
        
Version de la base de données du registre EPSG  
v10.054 (2022-02-13) 
        
Version de GEOS         
3.10.2-CAPI-1.16.0 
        
Version de SQLite       
3.38.1 
        
Version de PDAL         
2.3.0 
        
Version du client PostgreSQL    
13.0 
        
Version de SpatiaLite   
5.0.1 
        
Version de QWT  
6.1.6 
        
Version de QScintilla2  
2.13.1 
        
Version de l'OS         
Windows 10 Version 2009 
        
        
        
        

        


        


        


        


        


        


        





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