Fix: Map or chart option is grayed out
Each visualization requires the table to have certain types of data. For example, a column with locations is required to display data on a map. Fusion Tables tries to identify the relevant visualizations for a table and activates the appropriate visualizations.
Visualizations that cannot be created are grayed out. A tooltip on the button will indicate the type of data required to use the visualization.
You can change the column types to activate visualizations on a table.