Geodata analysis?

Question

Google Maps

It is necessary to create a questionnaire for the diploma, in which people will poke at the map, and the received points will be used to analyze the information, a quote from the task (k-means spatial data clustering method, taking into account the specifics of the presence of obstacles in the urban area).
There are no problems with obtaining the coordinates, but I won’t know what to do with them further.
Such a question: is there a library for such cases, or can this be implemented on the same js, through the maps api.
ps The thesis supervisor trudges on machine learning and analysis, but I'm zero in this, so I ask for all possible help.
ps2. I am writing in php, and Google did not give me such a library, perhaps it is implemented in another PL.