SideWalk Widths

Let’s suppose you have imported a graph/streetnetwork (from a shapefile) with some attributes that define what type of line it is.

In this example I am using the graph network for water features as well as roads.   Obviously not all rivers have sidewalks (pavements in the UK) so I want to set them to zero.

First add your New Map Layer as a function and make sure the map layer is covering your data.  I change the colour from white to another colour, so I can see how big the function layer is and where it is (you need to look in the Inspector window for this).

Now this is what I have used to set the sidewalkwidths to zero using an imported graphs attributes. Copy and paste then amend this code to your data:

sww = getObjectAttr("Surface") //read from your imported graph the appropriate attribute
class = getObjectAttr("Class")
//the following performs a test that if the attribute is any of the following then the width is zero
attr sidewalkWidthRight =
	case sww == "Unmade":
		0
	case sww == "water":
		0
	case class == "Arterial":
		0
	case class == "CityCoverageBoundary":
		0
	else:
		2

attr sidewalkWidthLeft =
	case sww == "Unmade":
		0
	case sww == "water":
		0
	case class == "Arterial":
		0
	case class == "CityCoverageBoundary":
		0
	else:
		2