Area Charts are those which can successfully represent the data changes in time, if it’s possible to arrange
the data as a table, in columns and rows. They are usually being used to show the temperature changes or
rates .They use a two-dimensional coordinate system, as Line Charts do; they can be of some Line types, such
as Spline or Step.
Step Area Charts look a lot alike Step Line ones, only there is an area between the “line” part of the Area
series and x-axis filled with color in the first, emphasizing the changes. Step Area Charts use only
vertical and horizontal lines to connect the data points, so the result looks like a step-progression.
Stacked Charts are those which display the comparison of the quantitative value each part of the category
brings to the whole category. This chart is stacked – it means we think of all values of one category as a
whole, and each series’ value brings its part.
This Chart shows us the yearly statistics for collected comments, which describe customers’ satisfaction.
Categories (years) are spread along the x-axis, and the values are on the y-axis. There are three series
created: for neutral comments, for grateful and for disgruntled comments. Each series has its own color. The
legend is enabled, so you can use its items to manage the chart performance: hover the item to make its
series highlighted or click the item to disable/enable its series. When you disable or enable any of the
series, the maximum value on the y-axis might be recounted due to make the chart look more attractive. The
crosshair is enabled, so each time you hover a point, other points belong to the same category become
hovered and highlighted too. A tooltip is enabled as well. It contains the category name as a title and the
amount of comments of each type (values of the hovered data points) in tooltip’s body.