The Step line chart type is similar to regular line chart, but it does not use the shortest distance to connect two data points. Instead, this chart type uses vertical and horizontal lines to connect the data points in a series forming a step-like progression. You can easily make Step-area chart by simply setting opacity of a fill to some bigger than zero value.
Axis labels – both inside and outside
Value /category labels of our axes can be displayed both outside and inside chart’s plot area. This might save some expensive area, if you need it.