preventing from duplication or intersection of instances on a point

[Ali.sadeghi.h1994]

Hi everyone, I wrote a code to place new desired instances on specific points with NewFamilyInstance() method. How should I prevent adding instance on the points that there is same or other types of instances on them before (Check if there is an instance on the point or not)? somehow preventing from duplication or intersection of instances on a point.

[moturi.magati.george]

Hi @Ali.sadeghi.h1994,

There was an interesting conversation about the question you raised above in the link shared below.

https://forums.autodesk.com/t5/revit-api-forum/check-multiple-instances-same-place/td-p/7443346

[Ali.sadeghi.h1994]

@moturi.magati.george
Thanks for your answer and suggested link. I have checked that but unfortunately the problem is not still solved. One solution is to define lists of all instances and their locations and check their intersection by loops or if statements but I'm looking for a short way to do that and I hope someone find the solution soon.