Legend for One Line in a Graph

[#1]

I have a radar chart with only one line being plotted, but I still want a legend to explain what the line represents. However, I've noticed that when I'm plotting a graph with just one expression, the legend disappears. The "Show Legend" option in the Presentation tab of the chart's Properties is grayed out so I'm not sure what to do.

[Anonymous · Accepted solution]

you could add another expression and deselect all the options under the "Display Options" property on the expression tab

[ltrowski]

Legend is only editable when the expressions are ungrouped.