from dtm to dwg file for revit

[Grillone]

Bye to all,

I am not a "gis" operator but use revit architectural for my design needs.
I need to import into revit the morphology of mountain soil to study the lighting of the house in project.
I have the dtms of the Piedmont region utm-wgs (in xyz format and ascii) and I wonder how I can generate a surface in dwg format starting from this data.
I also have autocad but not the version map.
Thank you.
Hi.
Cricket

 

[AntonioV]

I didn't try it personally because I got a map, but it looks good.
http://www.cadforum.cz/cadforum_en/download.asp?fileid=743

 

[Tristan]

I have the dtms of the Piedmont region utm-wgs (in xyz format and ascii) and I wonder how I can generate a surface in dwg format starting from this data.

If you already have the xyz file you are fine. from my blog:
http://ctrl-alt-cad.blogspot.com/2010/03/superfici-topografiche.html(Let the first part explain how to create xyz file from autocad)

 

[AntonioV]

if you already have the xyz file you are fine

by curiosity, once you generated the surface in revit, like the "below" to the architectural project?

Thanks

 

[Grillone]

Thanks for the answer.
the ascii file that gives me the Piedmont is with asc extension and not csv.
I'll bring you a piece of the file
ncols 520
nrows 222
xllcorner 422950
yllcorner 5138550
cellsize 50
nodata_value -9999
-99 -99 -99

How do I convert it to csv?
I looked at revit's help but I don't find an example.
Thank you.
Hi.

 

[Grillone]

Unfortunately, I don't know about gis.
the Piedmont gives me dtm data in two formats: ascii with extension .asc
and .xyz
I'll give you two examples. What do I do?
Thank you.

 

[AntonioV]

Unfortunately I don't know about gis

Don't worry, because your problem isn't about gis in a tight way.

So, the .xyz file is a wonderful csv file of the so-called "with header" type, while the .asc file is something that I personally never saw.

follow the tristan instructions to import the csv into revit, and you are fine.

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[Grillone]

Thanks for the help but I can't get what I'm looking for.
the two dtm example files I sent you before are the two .asc or .xyz formats that the Piedmont region provides.
I remember long ago that I used this data with an oziexplorer 3d program that I used for off-road trips... and I saw the mountains.
with notepad I read the files and I understand that the .asc is a grid and the .xyz is a table.

I tried to import the file in revit but revit nails. I think it's too many points. the same thing with autocad through the importxyz plugin. the Piedmontese file is created with points every 5 meters... so there are many numbers.

I would ask tristan, since it is an expert map and revit what I should do to make my solar studio in revit.

Thank you. Hi.

Cricket

 

[Tristan]

dtm is too big to be managed by rvt. I created the level curves from civ3d but revit fails to generate the surface. a question: what do you do with all the points? ?

 

[Grillone]

I don't need all these points. having the dtms of the region I told myself to try to use those. How do I simplify the surface?
I care that I can import a morphology of realistic mountains into revit to study lighting. What do you recommend?
Thank you.
Hi.

 

[Tristan]

I care that I can import a morphology of realistic mountains into revit to study lighting. What do you recommend?

then you have wrong tool! study of morphology and exposure of such a vast territory you cannot do it in revit! with rvt you can do a "solar" study on a building or on a neighborhood, not on a mountain! !

 

[AntonioV]

the Piedmontese file is created with points every 5 meters

for precision amor: The csv shirt is of 50 meters, the area is a square of about 6 km, on the side, located in the vco at the border with the Swiss, and if you want the dye in 3d, take a whistle.

If I can afford an alternative study, I would try to bring the model to google earth, so as to insert the project on the "real" ground.

 

[Grillone]

Wait, I'm losing...

I have a house surrounded by the mountains and I thought I would revit a surface / mass in revit to see when the house goes in my shadow? I'm asking too much better than to forget it revit for this?

What is dye 3d?

I have "returned" ozi3d in which I can import the ctr with the dems. as you see this place is stuck in the mountains. What would you use for sun study? Do I have to forget the mountains in revit?

I uploaded two screenshots of ozi3d

 

[Grillone]

for precision amor: The csv shirt is of 50 meters, the area is a square of about 6 km, on the side, located in the vco at the border with the Swiss, and if you want the dye in 3d, take a whistle.

If I can afford an alternative study, I would try to bring the model to google earth, so as to insert the project on the "real" ground.

the purpose is to know when the house goes in shadow in the different seasons. revit is comfortable to set the position of the sun during the year. What can you do in google earth to study the sun?

 

[Tristan]

Wait, I'm losing...

I have a house surrounded by the mountains and I thought I would revit a surface / mass in revit to see when the house goes in my shadow? I'm asking too much better than to forget it revit for this?

So I go back to my first question: what about a dtm of 6 km per side when you need to overdo a portion of 500 m?

What is dye 3d?

a mesh of triangles appropriately arranged in space to represent a portion of soil. is the basis of all environmental/road projects.

 

[AntonioV]

to learn more about dyes, look here..

 

[Grillone]

So I go back to my first question: what about a dtm of 6 km per side when you need to overdo a portion of 500 m?

the mountains surrounding the country rise over 3000 meters and I believe that if I do not take the tops it is not realistic to calculate the shadow

a mesh of triangles appropriately arranged in space to represent a portion of soil. is the basis of all environmental/road projects.

You see I come from the mechanics... because you know revit and map, I leave the road to revit or can I do anything?
the jpeg I did with ozi is exactly the section of the ctr and does not really contain the tops.

in another forum I read that there are those who go through autocad the level curves of a map at 25'000. My hope was... there are dtms... let's use them. I also found the dem gtopo30 of Piedmont (for me it is Arabic, I only understand that I am a less fine knit). I just have revit and autocad. Can I get out alive?

 

[AntonioV]

What can you do in google earth to study the sun?

Well, something can be done, e.g. Here we go. How will the light be in that area this afternoon at 5:00 p.m.

Anyway, since you want to bet on revit, I'm out and leave the word to our var.

:

 

[Grillone]

Well, something can be done, e.g. Here we go. How will the light be in that area this afternoon at 5:00 p.m.

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thanks for the example. so you use google to have a more qualitative idea than anything. Right?

 

[AntonioV]

you use google to have a more qualitative idea than anything else

I personally use ge as a gis tool, ie with vector objects related to a database.

However, the idea (for me new) to put a 3d building in the middle of that canyon, to vary the position of the sun, is too exciting, so I return to my sad 2d maps, and I leave you to your beloved revit...

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