Questions tagged [digitizing]
The process of converting features on a map or image (either hardcopy or digital) to vector-based data in digital format.
339 questions
1 vote
1 answer
106 views
Moving features of multiple layers simultaneously in QGIS
I am working in QGIS 3.44 and have a point and a polygon layer that contains a buffer for each point. I'd like to move a point and its buffer at the same time. I found this post which helped me to ...
- 13
2 votes
0 answers
57 views
Digitizing hatched polygons from scanned maps using Deep Learning in ArcGIS Pro? [closed]
I need to digitize swamp areas, shown as a horizontal hatch pattern, from a large batch of old black and white topo maps (see example below). Doing this manually would take forever. I'm considering ...
- 29
0 votes
1 answer
73 views
QGIS Plugins for digitising analogue maps
I am trying to map 600 shapes in QGIS from analogue ground maps. I have been using the Freehand raster georeferencer tool, but its really cumbersome when it comes to scaling files (often distorts and ...
- 133
2 votes
1 answer
78 views
Use point as decimal marker with QGIS advanced digitizing tool
When using the advanced digitizing toolbar I would like to use the point as comma marker when entering numbers. It is closer to the number pad on my laptop and easier to type. I cannot find an option ...
- 106
1 vote
0 answers
33 views
Automating line tracing on WMS layer [closed]
I am involved in a project that aims to digitize old topo maps and create 3D models out of them. My problem is a very simple one but i just cannot figure out a solution by myself. I have access to ...
1 vote
0 answers
40 views
When Digitizing a vector layer, how can I add multiple values for the same field and same point
I'm digitizing a vector layer for a transit system where some stations connect two or more different lines. What would be the best way to make sure that the same station is part of both lines? Is ...
- 11
0 votes
0 answers
42 views
QGIS Value Map/Value Relation: How can I set up several interdependent selection windows during digitization?
When digitizing objects, I would like to be able to select several categories and, depending on this, several subcategories in a multiple-choice form. Using the Value Map and Value Relation widgets, I ...
- 1
4 votes
1 answer
240 views
Connecting to the mActionDigitizeWithCurve map tool toggled signal with PyQGIS
Using PyQGIS for QGIS 3.34 and 3.38, I want to connect the toggled signal of the mActionDigitizeWithCurve map tool (in the Digitizing toolbar) to a function for such function to be executed when the ...
- 4,552
1 vote
1 answer
70 views
Find point that is a certain distance from another point in QGIS
I am new to QGIS. I am trying to digitise polygons on a historical map based on descriptions. For example: Commencing at that point on the southern boundary line of the territory of Colorado where ...
- 21
6 votes
3 answers
1k views
Drawing perfect square in QGIS
In QGIS 3.28.10 I need to draw a perfect square (polygon) in a shapefile. I know each side is 20 meters.
- 173
0 votes
1 answer
128 views
Fields that fill in automatically
I want to create a point layer with an ID field that fills in automatically as I digitize a geometry. It's possible? How can I do?
4 votes
1 answer
193 views
QGIS Polygon tool adding vertices continuously (unexpected behavior)
I'm having trouble with the polygon drawing tool in QGIS. When I try to create a polygon, instead of adding vertices with single clicks, the tool seems to be continuously adding vertices wherever I ...
- 160
3 votes
1 answer
120 views
QGIS Multi-layer selector for real time digitizing
From a project with more than one layer that are in Editing mode, I would need a solution that allows to, in real time, select the layer I want to digitize. The solution I would need would be, for ...
- 2,676
0 votes
1 answer
63 views
How would I go about efficiently digitizing intersecting polygons from a georeferenced map by snapping vertices in QGIS?
I have a map I've georeferenced in QGIS that has a lot of intersecting and adjacent polygons. I want to efficiently snap the vertices together as I draw the polygons because I don't want overlaps and ...
- 407
2 votes
1 answer
82 views
What is this coordinate system from my engineering document?
I have an engineering document from 1991 with coordinates for a region in San Diego, CA. I can't figure which coordinate system is being used here. I would expect "NAD83 StatePlane VI ft" (...
- 35