[Qgis-user] question on advanced digitizing

[Gabriel Cotlier]

Hello Andreas and Alexandre,

Thanks to your help I could finally learn how to do it!!
I finally could obtain a perfect square!!

Thanks a lot for your help!!
Kind regards,
Gabriel





On Thu, May 6, 2021 at 11:56 AM Alexandre Neto <senhor.neto at gmail.com>
wrote:

> Here's how I do it.
>
> https://twitter.com/AlexNetoGeo/status/856395509367525376?s=19
>
> Alexandre Neto
>
> A quinta, 6/05/2021, 09:21, Andreas Neumann <a.neumann at carto.net>
> escreveu:
>
>> Hi Gabriel,
>>
>> Yes - this is possible - but it is a bit hard to find.
>>
>> I will try to explain (and yes, this would need improvements in the
>> digitizing chapter of the QGIS manual).
>>
>> Steps:
>>
>> 1. Enable Snapping on your active layer
>>
>> 2. Enable "Self Snapping"
>>
>> 3. Press the "Add Polygon Feature" button (but don't yet digitize)
>>
>> 4. Enable "Advanced Digitizing"
>>
>> 5. In the "Advanced Digitizing" panel select the angles you want to snap
>> to
>>
>> 6. Start digitizing by pressing the left mouse button and adding the
>> first segment with the second click
>>
>> 7. Add any additional segments by staying with the new segments within
>> the angle tolerance in order to get new segments with proper right angles
>>
>> 8. If you want to close: first press "Alt-A" to fix the angle. Second: go
>> to your initial start point and snap to it with the Left Mouse Button
>>
>> 9. Press "Right Mouse button" to finish editing the polygon
>>
>> Here is a Video demonstrating the steps:
>> https://www.youtube.com/watch?v=JimwOpN8dOU (sorry about my voice, I
>> don't have a radio voice ;-) )
>>
>> As others have pointed out, you can uses the different "Add Rectangle"
>> modes in the "Shape Digitizing Toolbars", e.g. "Add Rectangle from 3
>> points".
>>
>> Hope this helps,
>>
>> Andreas
>>
>>
>> On 2021-05-05 20:38, Gabriel Cotlier wrote:
>>
>> Hello,
>>
>> I'm digitizing a square using the advanced digitizing tool, however when
>> I'm about to close the rectangle's last angle, the tool doesn't offer me to
>> see how to close it with a perfect square angle at the last click. Thus
>> cannot finish the figure as a perfect square (four 90 degree angles).
>>
>> How can I perform the square with the 4 perfect 90 degree angles using
>> the digitizing tool?
>>
>> Thanks a lot for your help.
>> Kind regards,
>> Gabriel
>>
>>
>>
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