Showing directions using marker rotation in a map chart
Some marker shapes, for example arrows, indicate directions. If you, in a map chart marker layer, rotate such markers, you can visualize directions of motions. What you need is a column that contains values that can be interpreted as degrees.
The rotation of the markers can be made clockwise or counter-clockwise. A full rotation is 360 degrees, and a value of 361 is interpreted as 1 degree.
Procedure
Map chart marker layer showing wind direction
The data table below lists, for a number of locations, wind speed and wind direction. The wind directions are expressed in degrees.
The markers in the marker layer below visualizes the direction of the wind at each location (and the marker sizes reflect the speed).
The selected marker shape is
. Then, for example, a 90 degree clockwise rotation of this marker shape will display it as
. If you instead select
as the marker shape to use, a 90 degree clockwise rotation displays it as
.
How many degrees each marker should be rotated is defined by the 'Direction in degrees' data column. The rotation direction is set to clockwise.