I would like to find where in the City there is a combination of 10 restaurants, 10 retail, and 10 stores open after 6pm within 3 linear blocks. What is the best way to do this? What data would I need and how would I analyze this? I would assume I need hours of operation, not sure how to get this (business license data, business associations, scraped from websites)? I will need land use classification, zoning data, block parcels, …

Any ideas would be helpful. I was also thinking of do the same analysis using zoning data to compare where this combo is possible vs where it exists. I would like to use QGIS or GeoMedia.