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For my master's thesis, I have to evaluate the student perception about our campus greenness. What should I use? I want the students to answer a questionnaire and also want that they mark on the map some points so that I can create green hotspots of our campus. I have read some research papers about using Leaflet and PostGIS and other things. But I don't exactly know how to implement these in my project as I have zero coding knowledge and therefore can't figure out where to begin. Any recommendations?