A few days ago, news about the "noodle refill" incident in Jiajiang County, Leshan, Sichuan Province, became a hot search topic, and someone also shared this news in the "Malá Là GIS" group chat. While debates about cultural differences and other issues were still raging on Weibo, a breath of fresh air appeared in our GIS group when someone asked: How can we obtain POI data for restaurants that offer "free noodle refills"? (See? Our GIS group truly has a professional spirit.)
As you know, I usually don't slack off, but I couldn't resist such an interesting GIS question. I consulted with various experts and did some hands-on experimenting. Although the final result wasn't entirely satisfactory, I'll still summarize the process for everyone today.
Traditional POI Databases
I've shared many POI datasets before, the most famous being the POI dataset from OSM. However, I found that the data fields provided by such sources are currently too simplistic, as shown below:
