Appropriate Data
Ternary charts are only suitable when the data involves three components that sum to a constant value (e.g., percentages adding up to 100%). If the data does not match these requirements then you should use a different charting type.
Maintain Aspect
Ensure the ternary plot maintains an equilateral triangle shape so that distances and angles represent proportions accurately.
Use Color Wisely
Color can be a powerful tool for highlighting trends or patterns within the data, but it can also be overwhelming if misused. Use color sparingly and ensure that each color has a clear meaning.
Provide Context
Always provide context for your chart by including a title, axis labels, and a legend. This will help users understand what they are looking at and interpret the data correctly.