24040 - Topo from image and some level changing

In this video, we will manually place points to create a topo to match the map image with contours and adjust the project's level, or the topo's level due to different conditions.

[@stonelittle9555]

Very Good！

[@samoxflox9261]

Jaaah … great … 1000 thanx Bin
After I ‘ve watched yours , I think the best is to move the topo down without messing with levels and only change the project base point elevation
For edit points after-wise no worry: from 2024 and up you can show the points relative to :
* current level
* project base point
* survey point
* internal origin (??)
Usually when you do a project (in school I mean) you start with the building first and then build up the topo later, thus it might be difficult to move the building up. It’s easier to move the topo down
By the way the topo solid has some capabilities, but the topo surface is still more accurate than the topo solid.
Luckily you can convert the topo surface into topo solid in R24, R25 …. I Wonder why Autodesk doesn’t fix the bug before they continue issuing new versions !
Thanks,

[@BINHE615]

Thanks for the input, Samer. I am always a bit nervous about all the levels, PBP, and SP issues since I have not had any real work experience on large projects. I mostly work on small projects and don't want to mislead people in any way. We are still on 2023 and will probably go straight to 2025, hopefully getting a better topo tool.

[@robertmarkusneiger6810]

Hi Bin He
Setting the reference quota is very simple.
The model does not move,
but the reference altitude of the project is linked to the sea level altitude.
0
Work in a section view
1
Unpin Survey Point,
so it stays there, and it doesn't move down.
2
Go to Manage
Project Location
Coordinates
Specify coordinates at point
3
Select the level
Specify Shared Coordinates
New Coordinates
Elevation
input the value
set OK
4
check it out with Spot elevation relative to Project base point and Survey Point
Best regards
RMN

[@BINHE615]

Thank you very much, Robert, I will have a try.