MapPolyline isssues in UI for Silverlight

This is a migrated thread and some comments may be shown as answers.

MapPolyline isssues

1 Answer 31 Views

Map

This is a migrated thread and some comments may be shown as answers.

figueiredorj asked on 04 Aug 2011, 05:07 PM

Hi.

I am using MapPolyline to draw paths on map.

Doing that I have two issues:

In first place I am only been capable of creating a MapPolyline adding location by location. Is a way of adding for example a List of Locations?
I have another issue that don't , know if is related to it or not but in part I know it does. If I add all my paths in a single polyline there isn't much lag; however If I split it by time (10:00, 11:00, 12:00,...) it takes too much time loading it in map. (I do believe that bing maps has something to do with it too, but I am unsure if I could use a more performing object or load it in a better way.)

I also set direction with arrows by 100 to 100 meters...
my code:

var line = new MapPolyline() { Stroke = color, StrokeThickness = 2 };

line.Points = new LocationCollection();

int auxDistance = 0;

IGeo last = null;

foreach (var point in route)

{

if (auxDistance > 100)

{

auxDistance = 0;

BuildArrowAtPoints(last.Location, point.Location, color);

}

auxDistance += point.IODistance;

last = point;

line.Points.Add(point.Location);

}

RoutesLayer.Items.Add(line);

}

SetBestView(SpeedLayer, this.Map);

1 Answer, 1 is accepted

answered on 09 Aug 2011, 03:08 PM

Hi Figueiredorj,

You can create a collection of the locations first, and then assign it to the polyline. For example:

var line = new MapPolyline() { Stroke = color, StrokeThickness = 2 };

LocationCollection points = new LocationCollection();

int auxDistance = 0;

IGeo last = null;

foreach (var point in route)

{

if (auxDistance > 100)

{

auxDistance = 0;

BuildArrowAtPoints(last.Location, point.Location, color);

}

auxDistance += point.IODistance;

last = point;

points.Add(point.Location);

}

line.Points = points;

RoutesLayer.Items.Add(line);

I hope this approach will help you resolve your second problem as well. Anyway, could you please, provide us with some more information on your polylines:

1. How many polylines you add to the information layer?
2. What is min, max and average number of points in the 1 polyline?
3. What is total number of points in all polylines?

Kind regards,

Andrey Murzov

the Telerik team

Explore the entire Telerik portfolio by downloading the Ultimate Collection trial package. Get now >>