Line
Set the formatting options for the selected line or the line that you want to draw. You can also add arrowheads to a line, or change chart symbols.
Line properties
Styles
Select the line style that you want to use.
Colours
Thickness
Select the thickness for the line. You can append a measurement unit. A zero line thickness results in a hairline with a thickness of one pixel of the output medium.
Transparency
Enter the transparency of the line, where 100% corresponds to completely transparent and 0% to completely opaque.
Icon
Set the options for the data point symbols in your chart.
Select
Select the symbol style that you want to use in your chart. If you select Automatic, LibreOffice uses the default symbols for the selected chart type.
Width
Enter a width for the symbol.
Height
Enter a height for the symbol.
Keep ratio
Maintains the proportions of the symbol when you enter a new height or width value.
Arrow styles
You can add arrowheads to one end, or both ends of the selected line. To add a custom arrow style to the list, select the arrow in your document, and then click on the Arrow Styles tab of this dialogue box.
Style
Select the arrowhead that you want to apply to the selected line.
Width
Enter a width for the arrowhead.
Centre
Places the centre of the arrowhead(s) on the endpoint(s) of the selected line.
Synchronise ends
Automatically updates both arrowhead settings when you enter a different width, select a different arrowhead style,or centre an arrowhead.
Corner and cap styles
Corner style
Select the shape to be used at the corners of the line. In case of a small angle between lines, a mitred shape is replaced with a bevelled shape.
Cap style
Select the style of the line end caps. The caps are added to inner dashes as well.