Timeline for Differences between DEM, DSM and DTM?
Current License: CC BY-SA 2.5
12 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 21, 2016 at 19:52 | comment | added | If you do not know- just GIS | @WolfOdrade this is the best answer due to the DTM component. I DTM changed usage in the late 90s. | |
| Jan 21, 2016 at 19:50 | comment | added | If you do not know- just GIS | @underdark I do not think this is quite right. DTM has been misidentified by Li 1990 or it changed from 1990 to 2000 when I entered grad school to do GIS. AS 1990 is pre say lidar this may be the reason. | |
| Mar 26, 2011 at 1:55 | comment | added | whuber | @Underdark I found it at tehran.academia.edu/aliasgharheidari/Books/194823/…. The fundamental distinction they make between DEM and DTM is that the DTM "will attempt to incorporate specific terrain features such as rivers, ridge lines, ..." Of all the answers so far, this distinction is clearly brought out only by @WolfODrade. In particular, the Wikipedia article on DEMs is useless in this respect. | |
| Mar 26, 2011 at 1:46 | comment | added | whuber | @Underdark Thank you. The correct link appears to be http://www.torabzadeh.bloghaa.com/files/2010/03/1.pdf, which exists but seems to run at a glacial pace... I'll keep trying. | |
| Mar 25, 2011 at 21:41 | comment | added | underdark | @whuber: That's the link: torabzadeh.bloghaa.com/files/2010/03/1.pdf | |
| Mar 25, 2011 at 21:15 | comment | added | whuber | @Underdark I find this quotation deeply confusing, because it does not reveal what distinctions are intended between "height," "elevation," and "terrain." (Indeed, the description of terrain seems to imply they are talking about LULC data, not DEMs or DTMs!) Do you have a link that would provide fuller context to understand this? | |
| Feb 2, 2011 at 23:15 | vote | accept | blah238 | ||
| Feb 2, 2011 at 9:19 | comment | added | jakc | I also thought that DEM was used as a generic name for a DSM/DTM. Whats a DEM then? | |
| Feb 1, 2011 at 23:37 | comment | added | underdark | Yes, there are numerous different definitions. I added a different one plus it's source. | |
| Feb 1, 2011 at 23:36 | history | edited | underdark | CC BY-SA 2.5 |
added 1059 characters in body
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| Feb 1, 2011 at 23:08 | comment | added | WolfOdrade | A DEM is not a generic name for a DSM and DTM | |
| Feb 1, 2011 at 21:24 | history | answered | underdark | CC BY-SA 2.5 |