Shape - defines the shape of the points. Possible values are: Bar, Cylinder, Cone, Inverted Cone, Pyramid, Inverted Pyramid, Sphere, Ellipse, Cross, Diagonal Cross, Line Cross, Line Diagonal Cross and Star.
Size - controls the size of the point shape.
Cluster Mode - controls whether the point series uses clustering. Clustering works by identifying densely populated regions of data, which are later visualized by a single point. This reduces the number of visual points on the screen and therefore improves performance. When you use clustering the point series will not regard settings for markers, data points, individual fill styles and shadow. Possible values are:
Auto - The area series uses sampling only when the number of data points is large.
Enabled - The area series always uses sampling.
Disabled - The area series does not use sampling. This is the default.
Cluster Distance Factor - controls the maximum distance between two data points if they are to be merged in a cluster. Higher values for this property will diminish the number of visual points, but will decrease the precision of the cluster and vice versa.