DTM FILES
DTM FILES
(OP)
Maybe this is a silly question: are DTM files a special type of files, similar to *.DWG, *XLM, *.DOC or *XLS, etc? or it just refer to a "type of model" (i.e. a representation of a land surface in 3D)?
For example, if somebody ask you to prepare a DTM file, what do you do? My understanding is that if I do a surface in Civil 3D that is my DTM file although it is a *.DWG file. Is this correct?
By the way, is DTM the abbreviation of "Digital Terrain Model"?
Thanks for your help.
For example, if somebody ask you to prepare a DTM file, what do you do? My understanding is that if I do a surface in Civil 3D that is my DTM file although it is a *.DWG file. Is this correct?
By the way, is DTM the abbreviation of "Digital Terrain Model"?
Thanks for your help.





RE: DTM FILES
A DTM, or DTED, or DEM file should more resemble an image file, where pixels are mapped to specific geodetic coordinates, and the "intensity" is actually heigh above geoid, or somesuch.
TTFN
I can do absolutely anything. I'm an expert!
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers
RE: DTM FILES
Thanks for your input...
RE: DTM FILES
TTFN
I can do absolutely anything. I'm an expert!
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers
RE: DTM FILES
RE: DTM FILES
Thanks both for your responses.
RE: DTM FILES
https://www.youtube.com/watch?v=yEv_ZED8O4o
Or manuals/CD's that came with inRoads...
RE: DTM FILES
RE: DTM FILES
A DTMs are typically a Triangular Irregular Network (TIN) or a grid. Previous posts in this thread seam to focus on the grid format, but TINs are common (and many times preferable, more accurate in Civil site design). In the GIS world, Grids (which can even be in an image format like TIFF) are more common.
I do not work with Autodesk Civil 3D, but I know it can produce TIN or Grid Digital Terrain Models (I use Carlson civil software). Civil 3D refers to DTMs as "Surfaces". Civil 3D can import and export surfaces to LandXML files for data exchange.
RE: DTM FILES
RE: DTM FILES
I can create the surface importing a LANDXML file. In Inroads there is a command called "translate" to do this. Will try again and post here if I find the solution...thanks!!
RE: DTM FILES
I attempted to differentiate a DTM (the generic model) from *.dtm (a specific file format). It is like talking about a text document DOC vs. Microsoft's *.doc file type (there are many other word processor file types).
Any time one is dealing with digital file deliverables, one needs to establish the specific file types and versions expected.
RE: DTM FILES
RE: DTM FILES
RE: DTM FILES