Dot Density
The dot density represents the amount of an attribute within an area. Each dot represents a specified number of features and is displayed with the same symbol. As the map below, you can know how the butterflies are distributed in the map and see where there are few butterflies living or where the habitat of butterflies is.
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To set Dot Density, choose "Dot Density" in the "Show" drop-down list, select the field you want to map and click
to add the field to the right column. In "Color" drop-down list, you can choose the color of the symbols. As to the settings of the symbol style, you can click the legends in "Symbol" column or the button.png){kind=small}
to open "Symbol Selector" window. Then you can set the symbol style, size, color, etc. If you want to change the background color, fill, etc, you need to click "Background" button to set. Moreover, the dot size can be set by dragging the trackbar or by inputting the value directly. Also, "Dot Density" trackbar can be used to adjust how many attributes each dot represents. You can input the value for "Dot Value" to adjust the dot density as well. While you are adjusting the values, "Min" and "Max" shows the highest concentration area and the least concentration one on the map for you to preview. As all the settings are finished, click "OK" and the dot density map is created.
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NOTE: While creating a dot density map, you can click 
to move all the fields to the right column or click
to remove the selected column. Also, you can click 
to remove all the fields.
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