Timeline for Extracting a DEM without low vegetation cover in a flooding area using LiDAR data
Current License: CC BY-SA 4.0
14 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 21, 2021 at 21:00 | history | tweeted | twitter.com/StackGIS/status/1373741220258795524 | ||
| Mar 21, 2021 at 15:52 | comment | added | Andre Silva | Marcel's answer directly answers your question. Here are some alternatives: gis.stackexchange.com/questions/101786/… (MCC-LiDAR); gis.stackexchange.com/questions/181712/… (FUSIN within QGIS). | |
| Mar 21, 2021 at 15:48 | history | edited | Andre Silva | CC BY-SA 4.0 |
readability
|
| Mar 20, 2021 at 9:00 | answer | added | Jost Hobic | timeline score: 0 | |
| Mar 12, 2021 at 13:20 | answer | added | Marcel | timeline score: 2 | |
| Mar 12, 2021 at 13:13 | comment | added | Marel_S | I've added some info, hope this helps. Thanks again! | |
| Mar 12, 2021 at 13:12 | history | edited | Marel_S | CC BY-SA 4.0 |
Added pictures and code
|
| Mar 11, 2021 at 21:09 | comment | added | Stu Smith | I suggest that you edit your original question to show exactly, step-by-step, how you successfully created the DSM. Include a screenshot of the DSM. Then edit to show the steps you took to attempt the DTM (DEM) creation. Include the error statements. | |
| Mar 11, 2021 at 20:31 | comment | added | Stu Smith | I'm a little confused. What return value or class code did you use to create the DSM? | |
| Mar 11, 2021 at 20:28 | comment | added | Marel_S | Thank you for your comment! I tried to get info of any classifications via the the lasinfo tool (after I used the text2las on the .txt file LiDAR data). However, since the .txt file only has the three columns of x,y,z coords, the following conversion to .las doesn't seem to have any classifications (yet). Can the classification be added after? I hope my answer makes a bit of sense, otherwise please let me know. | |
| Mar 11, 2021 at 15:53 | history | edited | Vince | CC BY-SA 4.0 |
removed appreciation
|
| Mar 11, 2021 at 15:44 | comment | added | Stu Smith | Interesting. Typically, the DSM is derived from the first return or from Class Code = 5 (high vegetation). Concomitantly, the DTM (aka DEM) is derived from the last return or Class Code = 2 (Bare earth). Can you confirm that your source data has those latter values? | |
| Mar 11, 2021 at 15:25 | review | First posts | |||
| Mar 11, 2021 at 15:53 | |||||
| Mar 11, 2021 at 15:22 | history | asked | Marel_S | CC BY-SA 4.0 |