A map visualizer that will take 8 cells of values to determine the map colour. The map shown will help to determine the center map cell value.
- Open Google Spreadsheet.
- Go to > Tools > Script Editor
- Copy viz.html and script.gs over there.
- Save it.
- Go back to Google Spreadsheet, there should be a "GridcellViz" button there.
- Click it then click "Show UI" in the menu extended.