Results from these selecting options from the database are shown in Figure 1.
Now let's see how these earthquakes are distributed in space and by years. For this the new opportunity of "Time Line" function is used. You can now animate the point with the help of 2.5D columns. First, we define the height of the columns.
1. Select the name of the layer "EarthQuakes" in the "Editable Layer" list.
2. Open the attribute table using the menu item "Edit-> Open attribute table".
3. Create a new attribute for instance called "Height". It will be used to create 2.5D columns. Their height will be calculated in meters above ground level depending on the number of earthquakes in each square. Therefore, this attribute must be created using the formula (Height = [Magnitude] * 150000) shown in Figure 2.