Once you import your data into DataHero, we try to categorize your data types correctly but sometimes we get it wrong. If we think we may have categorized it incorrectly, we'll show you an orange bubble asking you to verify. The icon next to the column title will indicate how the data type has been categorized.
If you click NO next to the icon or click the icon itself, you'll see a menu where you can select the correct data type.
If you drag data onto the chart and you think it doesn't look right, check the categorization. Navigate back to the YOUR DATA tab on your charts page and adjust the data type.