Timeline for Calculating polygon area within polygons in QGIS
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 12, 2018 at 7:31 | comment | added | Maggie | You're welcome, apologies I haven't been more - as a next step I suggest checking your reef polygon layer for validity, prior to intersecting. vector geometry > check validity (QGIS 3.0). A quick google suggests to me that previous QGIS versions require a plugin for this function, see docs.qgis.org/2.14/en/docs/user_manual/plugins/… | |
| Oct 12, 2018 at 1:42 | comment | added | Gie | thank you so much and for being very helpful. But Im encountering several problems (1) If I use Intersect tool,my reef file has invalid geometries so the process cant proceed. (2) If I use the processing toolbox, the dissolved layer has only one row although I used the grid ID as the basis for dissolving the features. The reefs are dissolved as one layer instead of each grid. | |
| Oct 9, 2018 at 12:04 | comment | added | Gie | Hi @Maggie, I dont know how to add here in the comment section so I added the image in the question field. Sorry :( | |
| Oct 9, 2018 at 12:00 | comment | added | Maggie | Could you please post a screenshot of an area zoomed in? So I can see the polygons within a grid square or two more clearly. Thanks | |
| Oct 9, 2018 at 11:51 | comment | added | Gie | I'm sorry @Maggie, I checked the original file, the shapefile is not actually made of points but polygons | |
| Oct 9, 2018 at 10:51 | history | answered | Maggie | CC BY-SA 4.0 |