ArcGIS Arcade is a simple scripting language that can be used across ArcGIS. Arcade Expressions can be used to generate symbology, pop-ups, labels, and more and are supported in ArcGIS Pro, web maps, and mobile applications. Here we will look at using Arcade Expression when working with linear referencing pipeline asset data.
Labeling stations and vertices with measure values along pipelines.
Copy and paste the expression found in the expression template below to the Arcade editor in ArcGIS Online, the relevant location in ArcGIS Pro, or the relevant location in a custom app.
This arcade expression will return a formatted string for use in labeling stationing along a pipeline. Stationing specifies the relative point along any reference line.
// Stationing specifies the relative point along any reference line
//US Survey Foot - 1 station = 100.0' = 1+00.0
//Metric - 1 station = 1000.0m = 1+000.0
var station = $feature.MEASURE
var IsNegative = 0 //tracks +/- values
var Type = 'Feet' //"Meters" Switch type as needed
if (station < 0) {
//convert all negative stations to positive and append back the - at the end
station = station * -1
IsNegative = 1
}
//##00+00.0 or ##0+000.0 - These functions will provide this format regardless the length of the field
//formatting with decimals after the + sign - if there is not
if (Type == 'Feet') var StationlbR = Text(station, '00.0')
if (Type == 'Meters') var StationlbR = Text(station, '000.0')
//Getting rid of the two initial character dividing by 100 or 1000. formatting result with 2 zeros and room for more characters
//using the Split function to extract from the second character from the left of the decimal point
if (Type == 'Feet')
var StationlbL = Text(First(Split(station / 100, '.', 1)), '###00')
if (Type == 'Meters')
var StationlbL = Text(First(Split(station / 1000, '.', 1)), '###000')
var Stationlb = Concatenate([StationlbL, StationlbR], '+')
if (IsNegative == 1) Stationlb = '-' + Stationlb
return Stationlb
