When (the alert equals “GREEN”, give it the name “PAGER GREEN”, When the hours old is greater than 25 but less than 145, give it the name “Past Week”,Īnything else give it the name “Past 3 Months) When (the hours old is less than 25, give it the name “Past 24 hr”, When the magnitude is greater than or equal to 6 and less than 7, give it the name “Mag 6-6.9”,Īnything else greater than or equal to 7, give it the name “Mag >=7”) When the magnitude is greater than or equal to 5 and less than 6, give it the name “Mag 5-5.9”, When (the magnitude is greater than or equal to 4 and less than 5, give it the name “Mag 4-4.9”, Without any additional data processing we will use Arcade to join these fields together to form new sets of information for our map. In order to visualize the fields together on one map they need to become combinations of:ģ Time Periods – Past 24 hours, 1 week, and 3 monthsĤ Ranges of Magnitude- 4 to 4.9, 5 to 5.9, 6 to 6.9, and +7ĥ Classes for Alert Level – None, Green, Yellow, Orange, and Red We want to display each of our three fields genuinely, but also honor and respect each attribute’s contribution towards understanding of the complete dataset.Ĭompelling map symbology requires knowing your data fields, evaluating each one’s importance, and being able to interpret them together in a way that will uniquely, and beautifully, tell their story. When did it happen? Where? In the middle of nowhere? A populated area? Are roads and buildings damaged or are people hurt? Is a 6.5 magnitude earthquake important? It depends right? Interpretation is at the Heart of Our Work It’s hard to differentiate the earthquake’s time, size, and severity as you flip between the maps and yet we need to be able to see them all.

Thrust fault symbol arcgis