If you need more information, I have just added information.@IvanSanchez

Thank you. I try to apply your script which unfortunately does not seem to work and I think it's because I did not provide my array from the query. I would like to show you the form of the result of my data table from which I recover the longitude and the latitude

My map dispear when i try to update web page

Thank you for your attention . In fact i try to retrieve the geographical coordinates of the points drom query in my post . Then i wanted to display each point. And i don't know how

@ Joseph may be you could help me to find the way to show a message from the processing progress to the user.

Sorry i do a mistake . forget "i" when i insert "from gqis.utils import face"