How to move the topoSurface below?

[Anonymous]

Hi to all programists!

I import topoSurface into revit :

But it's location is too high. I want to have the average value of the points along the axis Z on the level 1:

How to do this right? Should I use MovePoints method in TopographyEditScope transaction or something else? Thanks for any help.

[aignatovich · Accepted solution]

Hi!

First of all, get average Z from the surface points (surface.GetPoints()), then calculate the distance (this value minus your level project elevation),

then call ElementTransformUtils.MoveElement(doc, surface.Id, -1*distance*XYZ.BasisZ)

[Anonymous]

Thank you very much for your reply.

Could you please help me with one more problem? With your code i have an exception: "A managed exception was thrown by Revit or by one of its external applications"

My code looks about this:

using (Transaction tr = new Transaction(CurrentRevitDocument, "VIEW_3D"))
{
    tr.Start();
    TopographySurface topoSurface = TopographySurface.Create(CurrentRevitDocument, Points);
    double distance = getCoordinatesOfZAxis(Points, 3).Average();
    ElementTransformUtils.MoveElement(CurrentRevitDocument, topoSurface.Id, -1 * distance * Autodesk.Revit.DB.XYZ.BasisZ);
    tr.Commit();
}

And in line with moveElement method i have my exception.

Thanks.

[aignatovich]

Hmm. Strange thing.

Try to split creation of topography surface and moving it down in separated transactions. You can join them later in a transaction group.

[Anonymous]

Thank you very much for your help.