Use this feature to specify the number of clusters to generate when Automated K Means is selected as the K-Means Clustering Method .Note : This option is available only when the Use K-Means clustering to reduce marker number check box is checked.
Tip : To change the scale of the slider, right-click on the slider and select from the pop-up menu. Change the upper and/or lower boundaries in the window that appears, to rescale the slider and click .