The Mode button enables you to switch Density Maps ON and OFF. The All Traffic tab is selected by default. Use the Year buttons to get Density Maps for the respective year(s) (2014, 2015). The selected year(s) will be highlighted. Click on the same button once again to de-activate it. You can also activate both buttons to get Density Maps containing data for both years.
Upon activation, you can view Density Maps that will include all types of vessels that had recorded positions during the selected time-period. Use the Opacity slider to define the way you want the Density Maps to overlay the Live Map ranging from transparent to opaque (left to right).
Note that if you have selected to display data from both years, the Opacity slider will turn into the Crossfade between years slider ranging from 2014 to 2015 (left to right). Slide it to display the corresponding information.
Depending on the overall traffic, Density Maps will be coloured respectively.
The colour coding is based on a rather compound algorithm. An approximate estimation on the numeric values of the corresponding colours follows - the numbers refer to distinct vessels on a daily basis and count positions per square Km.
Blue = less than 30
Green = 30 to 70
Yellow = 70 to 140
Red = more than 140
If you are a Pro plan subscriber and above, you can also get Density Maps per Vessel Type or Vessel Size by simply clicking on the relevant tab - note that for some Vessel Types (Cargo, Tankers, Fishing, Containers) you can select by Size at the same time.
Depending on your Type selections, the layers of the Density Maps will have the respective colour for easier identification. For example:
- Vessel Type layers will be coloured blue for Passengers Vessels, red for Tankers and so on.
Note that each option has its own opacity slider so that you can determine not only which ones to be displayed but, also, the opacity of the respective layer.
Moreover, you are able to define the order of the Vessel Types categories. Simply, drag any Vessel Type box to re-order it in place. This will result in altering the displayed Density Maps. The Vessel Types that you order higher on the list will overcoat the others on the Live Map. For example, suppose you wish to get Density Maps mainly for Tankers. Then, you should drag them to the top of the Vessel Types list so that the red layer will be displayed on top of the rest. In short, you are able to focus on the Type(s)you are mostly interested in.
Tip: You are also able to crossfade between years regarding a specific vessel type or size. Simply, activate both years and select the vessel type of choice. The respective opacity slider can now be used to crossfade (similarly to the All Traffic slider).