Density map, also known as a heat map, is a two dimensional representation of locations by latitudes and longitudes in colors. Areas with higher density of location are represented by darker or dominant colors i.e. red where areas with fewer locations are represented by lighter colors. It is also possible to include a numeric representation of a location in density maps. For example wind speeds measured at various locations can be represented in a density map where colors can represent wind speeds.
A density map requires one Latitude Field, one Longitude Field and an optional Measure Field.
Please note that the Measure needs to contain numeric data and remember to select an Expression for the Measure field by choosing from the drop down.