Timeline for How to clean up contours?
Current License: CC BY-SA 3.0
15 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 7, 2014 at 10:27 | vote | accept | MikeS | ||
| May 7, 2014 at 10:21 | answer | added | MikeS | timeline score: 0 | |
| May 5, 2014 at 7:20 | comment | added | lavarider | I actually wonder if all your lines are indeed equal-elevation contours? There are some odd lines in the center of your first picture, which are perpendicular to most other lines and also seem to touch many lines. These lines don't look like contours! Although the answers below explain how to "enhance" low-quality contours, I think it is necessary to evaluate if all your lines are true contours as a very first step. A screenshot of the labeled contours would be very helpful, and also an short extract of their attributes. Also, what interpolation did you use for DEM creation? | |
| May 4, 2014 at 22:06 | comment | added | Michael Stimson | Those spots look to be bad 'Z' values in the contours. Have you looked at the data in ArcScene or other 3d viewer? Is there an elevation or height attribute you can use as your 'Z' source instead? If all else fails and you're desperate you could fill them in help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//… it's a bit dodgy but will fix the worst of the DEM problems and hopefully not introduce new ones. | |
| May 4, 2014 at 22:01 | history | tweeted | twitter.com/#!/StackGIS/status/463075898833772544 | ||
| May 4, 2014 at 20:24 | answer | added | Jakub Sisak GeoGraphics | timeline score: 2 | |
| May 4, 2014 at 10:55 | history | edited | MikeS | CC BY-SA 3.0 |
Added result generated using suggested method
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| May 4, 2014 at 6:20 | answer | added | Michael Stimson | timeline score: 3 | |
| May 3, 2014 at 20:22 | history | edited | PolyGeo♦ | CC BY-SA 3.0 |
deleted 12 characters in body; edited tags
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| May 3, 2014 at 18:05 | comment | added | Chris W | Are these errors present in the dxf or showing up as you bring it into GIS or perform an operation on it? If they're in the dxf, then you have a case of dirty data that you will have to clean up. dmh126 mentions some useful methods in his answer. | |
| May 3, 2014 at 15:44 | answer | added | dmh126 | timeline score: 3 | |
| May 3, 2014 at 14:48 | comment | added | MikeS | This image is from ArcGis, but Im using Qgis and Grass as well. | |
| May 3, 2014 at 14:24 | comment | added | dmh126 | Which software are you using? Qgis, ArcGiS? | |
| May 3, 2014 at 13:44 | review | First posts | |||
| May 3, 2014 at 15:39 | |||||
| May 3, 2014 at 13:24 | history | asked | MikeS | CC BY-SA 3.0 |