This shows you the differences between two versions of the page.
|
tutorial:vectorization [2013/10/01 17:07] leoame [Advanced Vectorization] |
tutorial:vectorization [2013/10/01 17:11] (current) leoame |
||
|---|---|---|---|
| Line 1: | Line 1: | ||
| ====== Advanced Vectorization ====== | ====== Advanced Vectorization ====== | ||
| + | |||
| + | This topic relate all the strategies concerning the vectorization. | ||
| ===== Homogenized drawing ===== | ===== Homogenized drawing ===== | ||
| - | If you want your final results to be consistent you should allways draw your lines at the same scale. In addition, to get fluid results your drawing scale shall be at least 10 time bigger as the original map. By doing so you will see nice and round lines instead of sharp edged segmented ones. | + | If you want your final results to be consistent you should allways draw your lines at the same scale. In addition, to get smooth results your drawing scale shall be at least 10 time bigger as the original map. By doing so you will see nice and round lines instead of sharp edged segmented ones. |
| exemple: for a 1:10'000 map digitize your lines at a 1:1'000 scale | exemple: for a 1:10'000 map digitize your lines at a 1:1'000 scale | ||
| Line 15: | Line 17: | ||
| {{tutorial:tutorial-intersection1.png?nolink}} | {{tutorial:tutorial-intersection1.png?nolink}} | ||
| - | As you can see on the picture above, there is a lot of intersections totally ignored. Now draw the smaller features the same way you would do near the frame (i.e. wider than needed) and directly attribute them. | + | As you can see on the picture above, there is a lot of intersections totally ignored. Now draw the smaller features the same way you would do near the frame (i.e. wider than needed) and directly attribute them. Then: |
| - | => **Ctrl+i**: It automatically creates the intersections and cut the lines. | + | => **Ctrl+I**: It automatically creates the intersections and cut the lines. |
| => **Shift + select**: Unselect the part you want to keep. | => **Shift + select**: Unselect the part you want to keep. | ||