from dtm to dwg file for revit

[Grillone]

to learn more about dyes, look here..

thanks for the link.
I understand what the tinc needs. I did another test with ozi3d using a satellite map, but with the dtms of the Piedmont region. ozi allows me to read dtms with greater resolution. in the attached case I created a grid with 114 meters of lattice and I have about 8400 points.

first question: revit explodes if he had to manage a plot of 8400 points?
second question: how many points would it be better to have the ground not to weigh revit?
third question: revit imports csv file of the soil type x,y,z but x and y if they are the long and lat I have to repair them in the zero of my screen. even z I should reload it from zero as part of my house. working in excel is not difficult to do it ... just recalculate the cells. Do you have an example of revit csv files?

ps: I understand that for you gis with map is easier:smile: but I hope to get there the same in a way a little more artisanal :finger:

Thank you.

 

[Tristan]

first question: revit explodes if he had to manage a plot of 8400 points?

depends also on your hardware configuration, but 8000 points are not few, indeed...

second question: how many points would it be better to have the ground not to weigh revit?

there is no standard number; It depends here, too. I would still try to stay under the 2000 points.

third question: revit imports csv file of the soil type x,y,z but x and y if they are the long and lat I have to repair them in the zero of my screen.

This is a different problem. a xyz file usually comes from a previous coordinate conversion resulting in reprojection and the udm are usually meters. the latlong system does not reason with linear udm but corners! latitude and longitude are a pair of spherical coordinates. result: you would have the ground in completely deformed rvt!

 

[Grillone]

depends also on your hardware configuration, but 8000 points are not few, indeed...


there is no standard number; It depends here, too. I would still try to stay under the 2000 points!

Okay.

This is a different problem. ....you would have the ground in completely deformed rvt!

Okay, so if I have that 2000-point grid from my jpeg, which coordinates I leave and how do I generate the csv file to use it properly in revit, or can I autocad these points and then from there in revit?

 

[Tristan]

Okay, so if I have that 2000-point grid from my jpeg, which coordinates I leave and how do I generate the csv file to use it properly in revit, or can I autocad these points and then from there in revit?

depends on the coordinate system. Unlike autocad, rvt does not manage coordinate elements too far from origin (in the order of millions of meters). ideal would take this csv, import it into autocad, generate 3d level curves and save the dwg, then take the dwg of the curves and use it in revit to build the ground.

 

[Grillone]

... the ideal would take this csv, import it into autocad, ...

Meanwhile I try to find out with what coordinates I can recover these points from ozi3d. What coordinate system do you recommend me to import the autocad file?

 

[Tristan]

Meanwhile I try to find out with what coordinates I can recover these points from ozi3d. What coordinate system do you recommend me to import the autocad file?

in its original system, that if not erro should be utm-wgs84 melted 32n

 

[AntonioV]

Gentlemen,
also allowed to generate a 3d plot with over a villa, the area remains in the middle of the Alps: How does revit know that the sun is hidden from high mountains?

not only: the notion utm/wgs is known by autocads of class map/civil, but acad "normal" that it does?

Sorry about the ignorant questions of the software, but I don't want the good cricket to get illusions. . .

:

 

[Grillone]

Gentlemen,
also allowed to generate a 3d plot with over a villa, the area remains in the middle of the Alps: How does revit know that the sun is hidden from high mountains?

not only: the notion utm/wgs is known by autocads of class map/civil, but acad "normal" that it does?

Sorry about the ignorant questions of the software, but I don't want the good cricket to get illusions. . .

:

Maybe you could generate a "mass" for the mountains. What do you say?
I don't know map and I don't have any topography. I would like to find a humanly simple way to create a volume using dems to generate shadows. I hope I'm not a fool. revit thinks in the plan, you just have to find the way to create its volume occupied by the mountains.

I think it would be nice and useful to be able to do it

 

[AntonioV]

Perhaps you could generate a "mass" for the mountains

Revit building mountains, was he the father-in-law? ?

I understand it's a powerful program, but I don't almighty...

 

[Tristan]

Maybe you could generate a "mass" for the mountains. What do you say?

Why? the topography in rvt is able to bring shadows. you only need a more "limited" environment than the current

 

[AntonioV]

you only need a more "limited" environment than the current

Forgive me, but in my opinion, the current 6x6 km wide, goes well.

If you limit the topography in the discreet surroundings of the yard, cut off all the surrounding mountains, therefore the "solar" simulation will not be true.

Unfortunately, as you yourself said, revit does not manage such a sowing of points, but how can cricket get a less dense dtm?

This is "the problem, in my modest opinion.

:

 

[Grillone]

Why? the topography in rvt is able to bring shadows. you only need a more "limited" environment than the current

Of course, I thought maybe for revit it was "less" heavy to handle a mass than a ground.
then we remain on the idea of creating a plot with the 2000 points. Can you tell me which format/coordinates I have to generate the csv for revit?
Thank you.

 

[Grillone]

Forgive me, but in my opinion, the current 6x6 km wide, goes well.

... but how can cricket get a less dense dtm?

....
:

with ozi3d I can change the grid step to reduce points in the area of 6kmx6km; So I can get the 2000 points.
what I ask myself is these 2000 points as I transform them into my csv; i.e. which coordinate system I have to use. revit thinks in the plane and not in the spherical... so that we do?

 

[Grillone]

I'm sorry, but the yellow road, how did you do it in revit?
have you divided the surfaces into 2 objects? It is not a true road, it is only
colored soil differently to show where it passes, right?

 

[Tristan]

what I ask myself is these 2000 points as I transform them into my csv; i.e. which coordinate system I have to use. revit thinks in the plane and not in the spherical... so that we do?

your dtm is already on a projected system (utm wgs84) so the problem of geographical coordinates does not arise

 

[Tristan]

I'm sorry, but the yellow road, how did you do it in revit?
have you divided the surfaces into 2 objects? It is not a true road, it is only
colored soil differently to show where it passes, right?

That's right. You can also see from the level curves. I see it hard in revit, but fortunately I have autocad civil that makes it to me! :biggrin:

 

[Grillone]

your dtm is already on a projected system (utm wgs84) so the problem of geographical coordinates does not arise

Okay.
ozi3d manufacturer reported using http://www.globalmapper.com/ to convert my dtm to the area I need in a dwg to revit.
I'll do this and then I'll tell you. if you have suggestions of other software tell me as well.
Thank you. Hi.
Cricket:

 

[Grillone]

... but according to me the current one wide 6x6 km, goes well ...

:

I'll see you. through globalmapper (a 2005 version I had) I read the dtms of the Piedmont and I generated the relative dwg I attach to you.

I imported the dwg in revit, applied an offset to lower it to the zero of the house. everything turns well and revit is not slow (I kept the points at 50 meters because I did not know how to change it in globalmapper).

If in revit I attribute the land property to my dwg revit becomes slow in 3d. at this point, in my opinion, it would be better to keep my small land around the house and to create a mass for the mountains (which I turn on and turn off).

What do you think?

ps: the house is that foruncle near the mouse (I activated the sun path to show it)

 

[Tristan]

It would be better to keep my small land around the house and to create a mass for the mountains (which I turn on and turn off).

What do you think?

I am puzzled... I would be curious to know what method of modeling you will use to generate mountain-shaped masses
:36_1_5:

 

[Grillone]

I'll see you. through globalmapper...

What do you think?

...

I also generated the xyz csv. it seems that revit creates a better soil, but it becomes slower.
I'll get you the file. even if it has xyz extension tell revit that it is a csv that matters to you.