The Heatmap gadget displays a map with color intensities based on values you add to your spreadsheet, including country ISO (International Organization for Standardization) codes and data you want to show.
To enter a Heatmap gadget, follow these steps:
- In one column of your spreadsheet, enter the relevant country ISO codes (you can see a full list at the ISOwebsite).
- In the adjacent column(s), enter the data you want to show.
- Highlight the cells where you entered data in steps 1 and 2.
- Go to Insert > Gadget.
- In the Add a Gadget window, scroll to Heatmap and click the Add to your spreadsheet button.
- The gadget menu appears in your spreadsheet. In the 'Range' field, enter the column names where you added data in step 1.
- In the 'Title' field, create a title for the gadget.
- Click Apply. The gadget appears in your spreadsheet.
If you change any of the data relevant to this chart in your spreadsheet, the chart will update automatically. You don't need to repeat the steps above to edit this chart.
Interested in creating a Gadget of your own? Check out the Google Gadgets API and the Google Visualization API. For help using these APIs check out the Google Visualization API forum and the Google Gadgets API forum.