qgis_hydrology
Differences
This shows you the differences between two versions of the page.
| qgis_hydrology [2021/02/17 10:22] – created bushwalking | qgis_hydrology [2023/03/06 08:40] (current) – external edit 127.0.0.1 | ||
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| Open Attribute Table (F6), enable editing (Ctrl+E) and Open Field Calculator (Ctrl+I). | Open Attribute Table (F6), enable editing (Ctrl+E) and Open Field Calculator (Ctrl+I). | ||
| - | The following formula looks at the values in the underlying D8FlowLog layer at the start and end of each line and takes the largest, which is a reasonable approximation for stream size. The field type should be int, and the name can be whatever you want (I use Category). Note that you'd need to replace D8FlowLog in the formula below with your relevant layer id. | + | The following formula looks at the values in the underlying D8FlowLog layer at the start and end of each line and takes the smallest, which is a reasonable approximation for stream size. The field type should be int, and the name can be whatever you want (I use Category). Note that you'd need to replace D8FlowLog in the formula below with your relevant layer id. |
| - | < | + | < |
qgis_hydrology.1613517727.txt.gz · Last modified: 2021/02/17 10:22 by bushwalking