[GiDlist] GiDlist Digest, Vol 36, Issue 7
Posted: Fri Jul 26, 2013 9:05 am
Sir
Thank you for your kind advice!
Maybe another way is we can import the terrain model from other CAD software (such as CAD or CUBIT, save the model as .iges or .dxf file then import into GID), Thank you!
Hui Liu
Wuhan,Hubei Province
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From: "gidlist-request"gidlist-request at listas.cimne.upc.edu>
Date: Wed, Jul 24, 2013 06:00 PM
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Subject: GiDlist Digest, Vol 36, Issue 7
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Today's Topics:
1. Re: How to establish a 3D terrain model (Enrique Escolano)
----------------------------------------------------------------------
Message: 1
Date: Tue, 23 Jul 2013 22:28:03 +0200
From: "Enrique Escolano" escolano at cimne.upc.edu
Subject: Re: [GiDlist] How to establish a 3D terrain model
To: gidlist at listas.cimne.upc.edu
Message-ID: 1d21601ce87e3$22ab9840$6802c8c0$@cimne.upc.edu
Content-Type: text/plain; charset="iso-2022-jp"
There are different possibilities, depending on the kind of available data,
Typical terrain cases are:
1- Unstructured cloud of points, e.g. a text data with x,y,z
coordinates
2- Level curves, e.g. dxf format with some kind curves of z=constant
3- A collection of unstructured triangles or other polygons, in formats
like dxf, stl, shapefile ?
4- A structured grid of points z(x,y), e.g. Arc/Gis data or several
raster formats like geotiff
...
If you are in the case 4) then you can try for example to import them with
Files-Import-GDAL? , the open file dialog offer some extra options to
create elements or geometry surfaces, and subsample the data if the grid is
too dense.
If you are in the case 1) you can try Files-Import-XYZ points or XYZ nodes
and then do you have an interesting extra option to connect the points
triangulating them in XY projection, to create automatically surfaces
Other possibility is to import only the points, and create a single NURBS
surface that approximate the selected points with Geometry-Create-NURBS
surface-By points
Enrique Escolano
De: gidlist-bounces at listas.cimne.upc.edu
[mailto:gidlist-bounces at listas.cimne.upc.edu] En nombre de ????
Enviado el: domingo, 21 de julio de 2013 4:47
Para: GiDlist
Asunto: [GiDlist] How to establish a 3D terrain model
Hello
I'd like to know how to set up a 3D model with topography, I already
have the terrain elevation data, such as .DEM or .XYZ data. How can GID
import them and about the interpolation work. I find it is hard to make a
satisfied .geo model.
I am very appreciated to hear from you and thank you for your
advice?
best wishes
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Thank you for your kind advice!
Maybe another way is we can import the terrain model from other CAD software (such as CAD or CUBIT, save the model as .iges or .dxf file then import into GID), Thank you!
Hui Liu
Wuhan,Hubei Province
------------------ Original ------------------
From: "gidlist-request"gidlist-request at listas.cimne.upc.edu>
Date: Wed, Jul 24, 2013 06:00 PM
To: "gidlist"gidlist at listas.cimne.upc.edu>
Subject: GiDlist Digest, Vol 36, Issue 7
Send GiDlist mailing list submissions to
gidlist at listas.cimne.upc.edu
To subscribe or unsubscribe via the World Wide Web, visit
http://listas.cimne.upc.edu/cgi-bin/mailman/listinfo/gidlist
or, via email, send a message with subject or body 'help' to
gidlist-request at listas.cimne.upc.edu
You can reach the person managing the list at
gidlist-owner at listas.cimne.upc.edu
When replying, please edit your Subject line so it is more specific
than "Re: Contents of GiDlist digest..."
Today's Topics:
1. Re: How to establish a 3D terrain model (Enrique Escolano)
----------------------------------------------------------------------
Message: 1
Date: Tue, 23 Jul 2013 22:28:03 +0200
From: "Enrique Escolano" escolano at cimne.upc.edu
Subject: Re: [GiDlist] How to establish a 3D terrain model
To: gidlist at listas.cimne.upc.edu
Message-ID: 1d21601ce87e3$22ab9840$6802c8c0$@cimne.upc.edu
Content-Type: text/plain; charset="iso-2022-jp"
There are different possibilities, depending on the kind of available data,
Typical terrain cases are:
1- Unstructured cloud of points, e.g. a text data with x,y,z
coordinates
2- Level curves, e.g. dxf format with some kind curves of z=constant
3- A collection of unstructured triangles or other polygons, in formats
like dxf, stl, shapefile ?
4- A structured grid of points z(x,y), e.g. Arc/Gis data or several
raster formats like geotiff
...
If you are in the case 4) then you can try for example to import them with
Files-Import-GDAL? , the open file dialog offer some extra options to
create elements or geometry surfaces, and subsample the data if the grid is
too dense.
If you are in the case 1) you can try Files-Import-XYZ points or XYZ nodes
and then do you have an interesting extra option to connect the points
triangulating them in XY projection, to create automatically surfaces
Other possibility is to import only the points, and create a single NURBS
surface that approximate the selected points with Geometry-Create-NURBS
surface-By points
Enrique Escolano
De: gidlist-bounces at listas.cimne.upc.edu
[mailto:gidlist-bounces at listas.cimne.upc.edu] En nombre de ????
Enviado el: domingo, 21 de julio de 2013 4:47
Para: GiDlist
Asunto: [GiDlist] How to establish a 3D terrain model
Hello
I'd like to know how to set up a 3D model with topography, I already
have the terrain elevation data, such as .DEM or .XYZ data. How can GID
import them and about the interpolation work. I find it is hard to make a
satisfied .geo model.
I am very appreciated to hear from you and thank you for your
advice?
best wishes
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