How CartoDB is able to add mouse interaction over PNG image Tiles
Question
I am new to GIS mapping.
I wonder how CartoDB is able to add mouse interaction like(mouse Hover/click) on The generated PNG image tiles. Can anyone explain the background process about how its done. Thank you so much.
2 answers
solution1
0 2019-07-29 13:14:40
solution2
0 2019-07-29 13:38:55
This is a very nice question!
They use a custom implementation of the UTF-GRID specification called Zera .
You can read a very good explanation here .
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