Skip to main content

Questions tagged [digitizing]

The process of converting features on a map or image (either hardcopy or digital) to vector-based data in digital format.

79 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
6 votes
0 answers
3k views

CadTools plugin functionality in QGIS 3 beyond Advanced Digitising Panel?

I've recently migrated to QGIS 3.6.0, and I've realised that the wonderful CadTools plugin is not compatible with QGIS 3. I tried to use the Advanced Digitising Panel, but it's cumbersome and not ...
Pierre Alexandre's user avatar
5 votes
0 answers
74 views

QGIS Updating three layers at a time by editing the edge where all the three layers concur

I have a map with three main layers: Roads (Polygons) Sidewalks (Polygons) Curbs (Multilinestrings) I need to adjust the edge where all the three layers concur to the cartography layer (the gray ...
Egidi's user avatar
  • 3,738
3 votes
3 answers
962 views

QField Freehand Digitizing Tool

I saw the latest update of QField 1.8 wherein users are allowed to draw/digitize in freehand lines/polygons geometries. I was wondering how can it be enabled in QField? We badly need it in our ...
Eon Villa's user avatar
  • 171
3 votes
0 answers
88 views

QGIS Value relation end and Start points while digitizing

I do a lot of pipes/pits digitization and i am trying to streamline the process. I am attempting to fill "To" and "From" field when digitizing lines with the IDs from a point layer they are ...
Rollobluster's user avatar
3 votes
0 answers
337 views

Split selected features with selected line from another layer not creating all new features

Trying to use the split selected features with selected line from another layer to split a polyline in 2. I run the tool and get the following output: In the attribute table there are now 2 ...
rickD's user avatar
  • 587
3 votes
0 answers
793 views

Troubleshoot with "Split selected features with selected line from another layer"

I am trying to use the "Split selected features with selected line from another layer" tool from the plugin Digitizing Tools in QGIS. Sometimes, this tool works with my shapefiles but sometimes it ...
user3386170's user avatar
  • 1,967
3 votes
0 answers
73 views

Digitized points are getting displaced automatically in QGIS

We are capturing 100's of drilling sample locations in QGIS. At times, we are copying the whole set of points from adjacent survey_lines to the next one. After that, we will capture the respective ...
joseph_k's user avatar
  • 1,441
3 votes
0 answers
267 views

How to avoid topology errors when digitizing a road network?

I am working on a road layer project. For the snapping option I'm using the mode to vertex and segment and tolerance 5 pixels. When zooming in (to the max) I do not notice a gap. But when I use the ...
MercedesHardjoprajitno's user avatar
3 votes
0 answers
655 views

Geometry issues when digitising in QGIS

I'm digitising a large number of maps from hand drawn mud maps and digital images, and although I have used the snapping tools ("snap to vertex and segment", Tolerance 10 pixels, avoid intersections) ...
Kapeppa's user avatar
  • 61
2 votes
0 answers
71 views

Advanced digitizing tools - snapping last vertex to right angle

My aim is to snap last vertex to the right angle using advanced digitizing tools. I'm running QGIS 3.30 with 'snap to common angles' on - see the picture below. Any ideas?
Adam's user avatar
  • 155
2 votes
0 answers
252 views

How to set my own QDialog Form instead QGIS QgsAttributeForm

I'm working in a QGIS plugin which its functionality is to facilitate the creation of custom attribute forms with complex logic to QGIS users without python knowledge. In order to do this, the user ...
diego.alonso29's user avatar
2 votes
1 answer
153 views

Automatically fix overlaps by weight/occurrence

I'm working on a project where I have asked a number of individuals to digitize the same features on the same satellite image. For example, an image of a coast where a group of individuals each draw ...
KT Jean's user avatar
  • 31
2 votes
0 answers
193 views

Split selected feature with selected line from another layer in QGIS LTR 3.4.9

Can't seem to find that tool since I switched from QGIS 2.14 to 3.4.9 It doesn't seem to be included in the Advance Digitizing Toolbar like before.For now, I re-installed 2.14 since I need to use this ...
Guillaume Royer's user avatar
2 votes
0 answers
658 views

Measurement units - advanced digitizing toolbar - QGIS

I want to create a polygon with certain dimensions in QGIS. 180x180 feet. I am trying to use advanced digitizing toolbar in order to create it. But I do not know the measurement units of d (distance) ...
Stathis's user avatar
  • 83
2 votes
0 answers
989 views

Copy polygons to another layer with different attribute

I am working in QGIS 3.0.2-Girona. I am digitizing images in which there are rocks that can be encrusted, totally or partially, by algae. I want to have a polygon for the rock and one for the algae. ...
Filippo's user avatar
  • 289
2 votes
0 answers
82 views

Error creating new polygons. QGIS

When I work in QGIS and try to fill gaps between polygons creating another one over them (project snapping settings are selected as Avoid intersection), I hope "fill" this gap with just one polygon ...
geoamateur's user avatar
2 votes
0 answers
249 views

QGIS 3D digitizing workflow

I want to digitize features in QGIS from an orthophoto and set the z-value of each node from a dsm/dtm. What is the best workflow for this? The solution might be to simply set what layer the ...
JohnnyBrattom's user avatar
2 votes
0 answers
112 views

Available snapping points for advanced digitizing?

In QGIS, the Advanced Digitizing tools have some snapping features that I don't see mentioned in the documentation. We know that we can digitize new segments that are perpendicular or parallel to ...
Nathan's user avatar
  • 1,304
2 votes
0 answers
55 views

Why does adding polygon in QGIS sometimes create a feature with edge too far across the screen? What am I doing wrong?

While digiting/creating new polygons in QGIS some polygons have elongated edges. Some features have no geometry (area=zero) too. What could be the reason? I use 3 Monitors, one for QGIS, one for ...
Ram Shrestha's user avatar
2 votes
0 answers
537 views

Adding land survey info to QGIS?

I am looking for help digitizing or adding info from survey plans into QGIS. In this example I'm trying to add the lease boundaries highlighted in yellow and the pipeline right of ways to the right ...
Jesse Lawrence's user avatar
2 votes
0 answers
604 views

Selecting current layer only using QGIS vertex tool

I am using the vertex / node tool in QGIS 3.0.2 to move vertices in a line layer. Part of the new behaviour is confusing / annoying and I don't know if anyone can tell me how to change the relevant ...
SeeWhy's user avatar
  • 355
2 votes
0 answers
242 views

Hotkeys for DAT/EM Summit Evolution linking into ArcMap functions instead

I'm using DAT/EM Summit Evolution to do feature mapping in stereo. When I try to use the hotkeys set in Summit, they instead execute functions in ArcMap. ie. when I press "0" which is linked to CAD: ...
Drew Branson's user avatar
2 votes
1 answer
310 views

Importing Advanced Digitizing Panel (CADInput) to plugin (custom toolbar)

How to add a CADInput (Advanced Digitizing Panel) to the plugin to click when we want to show us an Advanced Digitizing Panel(because I'm trying to make my toolbar), is there any chance to do this?
Anel Hasić's user avatar
2 votes
0 answers
329 views

How to reset the reshape tool in QGIS after 'unknown exception'?

I am using QGIS 2.18.16 and most of the time I have successfully been using the reshape tool to change the shape of polygons. I have snapping and tracing enabled. Occasionally when I right-click to ...
Martin Hügi's user avatar
  • 3,612
2 votes
0 answers
180 views

Topology Checking issue in Qgis 2.14.1

I am working on a large data set of Road with snapping tolerance 5px with topological editing option enable. When i am zooming to the snapped vertex with zoom level upto 1:50, its looking snapped or ...
Rajesh Kumar's user avatar
2 votes
0 answers
439 views

How can I optimize ArcMap Editor's streaming mode for use with a tablet such as the Wacom Intuos?

I have the Wacom Intuos 4 Large tablet which I use occasionally outside of ArcGIS. I now need to digitize a large volume of polygons from aerial imagery and am finding the tablet's ArcGIS ...
Jakub Sisak GeoGraphics's user avatar
1 vote
0 answers
27 views

How to apply digitisation algorithm to raster

I am building a code to apply a digitisation algorithm into a raster and get the results in a shapefile. I built the code and it works, but I keep having issues with the resulting shapefile being ...
jsct's user avatar
  • 11
1 vote
0 answers
67 views

How QGIS's "Remove duplicate nodes" actually works

I am working on digitizing a large number of polygons using stream digitizing, which sometimes creates duplicate nodes. I noticed that in "Layer Properties>Digitizing>Automatic Fixes" ...
Tkerr1's user avatar
  • 11
1 vote
0 answers
35 views

QField not implementing digitizing rubberband fill color option (including Don't update rubber band during node editing) set in QGIS 3.28

I am digitizing features on a map using a project generated in QGIS 3.28 or even QGIS 2.18. Under QGIS the project follows the settings that adjust the fill color of the rubber band (including Don't ...
roger's user avatar
  • 57
1 vote
0 answers
31 views

Snapping centers of objects in map canvas QGIS

I wanna snap object to object basing on their centers in map canvas. For instance, snap center of green polygon to the center of red one. Already stwitched on snapping options (see below). Is there ...
Adam's user avatar
  • 155
1 vote
0 answers
140 views

Bearing convergence in digitizing property surveys

I'm digitizing and stitching together a number of adjacent/overlapping property surveys. The most recent ones provide clear UTM/MTM grid bearings and distances, and in some cases coordinates of ORPs, ...
Houska's user avatar
  • 8,016
1 vote
0 answers
29 views

Digitizing boundaries for the educational office according to its affiliated schools

I have a layer of administrative boundaries, and within these borders, there are a group of separate schools for boys and girls, and these schools are under the supervision of several educational ...
Maram Mubarak's user avatar
1 vote
0 answers
120 views

Construction mode multiple points

Is there a way to define multiple points to snap in the construction mode in advanced digitizing? Let's suppose I want the value -26- from point 3 to 4 but also want a value -31- from point 1 to 4. ...
Felippe M.'s user avatar
  • 1,082
1 vote
0 answers
54 views

Automatically filling area surrounded by other polygons?

I want to fill the gap with a polygon automatically. It is surrounded by other polygons but the part inside the yellow circle is another shapefile. The gap is not made by adding a ring. Or is my only ...
BallpenMan's user avatar
  • 1,217
1 vote
0 answers
977 views

Freehand editing in QGIS

Is there a way to cut polygons in QGIS using freehand tool? Unfortunately Freehand Editing tool in QGIS 2.x does not provide such functionality. There is a tool for cutting polygons with standard ...
Sergey Myshliakov's user avatar
1 vote
0 answers
421 views

How to delete vertex and keep topology

I work with line vector data (road network).The lines (roads) includes several vertexes. I would like to have for each line only nodes - at the end of line, or at the intersection of n lines. How can ...
Jordan's user avatar
  • 49
1 vote
0 answers
95 views

QGIS 3.4.10 for Mac users...Digitzing polygons

I have just installed the LTR version of QGIS (3.4.10) and am having trouble telling QGIS when I have finished a polygon. In fact, I can't. It used to be in earlier versions that to end a polygon you ...
Wylie Thomas's user avatar
1 vote
0 answers
73 views

Adding vertices at a centerline node not working in QGIS3

I've recently installed QGIS 3.4. Earlier today, my vertex tool showed a virtual node at the center of line segments (as it should with the new node tool). This is no longer showing while editing the ...
snow-raven's user avatar
1 vote
0 answers
1k views

Using a Wacom Tablet and pen for QGIS, can I pause my free-hand polygon before I am finished, and then continue?

Is there a way to pause the free-hand tool in QGIS so that I can lift the pen off of the screen, and then continue my polygon again when I am ready? I have learned how to pan while free-hand drawing ...
Samantha Hofmeyr's user avatar
1 vote
0 answers
223 views

When using a Wacom Cintiq tablet and pen, can you pan while creating a feature using the freehand polygon plug-in in QGIS?

Is there a way to pause the free-hand tool in QGIS so that i can pan and move over the image and then continue my polygon?
Samantha Hofmeyr's user avatar
1 vote
1 answer
177 views

QGIS 3.4.x Properly digitizing polygons of uneven sides

I am facing some problems when digitizng polygons of uneven (irregular) sides using advanced digitizing and none/planimetric measurements for area and length calculations. In the example image below ...
user avatar
1 vote
0 answers
182 views

How to create a line through contours?

I am using QGIS 2.18.14. I want to create line through contour lines with fixed segments, automatically. I already tried manually with 'Advanced Digitizing Tools'. It works fine but too slow. The ...
Frodo's user avatar
  • 2,407
1 vote
0 answers
39 views

Custom Tool for creating a cirle out of straight segments

I used to use an old tool coded by somebody that would create a circle much like the current ESRI Circle tool, but it would make the circle out of straight segments with many vertices. The dll can ...
gnarkilleptic's user avatar
1 vote
0 answers
305 views

QGIS 2.14.11 Problem Deleting Features

I have recently upgraded to 2.14.11 from 2.8.2. I opened an old project which hasn't been opened since before I upgraded and came across an issue. I started editing a vector layer which was already ...
user71090's user avatar
1 vote
0 answers
214 views

Digitizing overlapping hatched range maps

So I have a book of range maps for species within a taxon. As they are presented, many of them are hatched (or stippled, etc.) and overlap ("cross-hatching" shows two species coexisting in the same ...
Plinth's user avatar
  • 111
1 vote
0 answers
108 views

QGIS - digitising polyline on Google maps base

I'm displaying a Google Street map via the Openlayers plugin and hand-digitising a route to find out its length. As I pan the map the digitized line keeps shifting slightly on the basemap. I'm using ...
simonc8's user avatar
  • 151
1 vote
0 answers
371 views

Shapefiles not editable anymore?

From this morning if I open a qgis project all the shapefiles are not editable anymore. I've tried different projects in both 2.14 and 2.16 qgis versions. Has anyone encountered the same problem?
Mattia's user avatar
  • 271
1 vote
0 answers
258 views

Rotate functions in "Rectangles, Ovals Digitizing" as well as "Advanced Digitizing" distort shape dimensions

I am trying to rotate squares via the rotate tool in the "Rectangles Ovals Digitizing" Plugin in QGIS. The dimensions/proportions of the sides, however, are distorted whenever I do so. Any idea of why ...
jbukoski's user avatar
  • 1,297
1 vote
0 answers
33 views

Fill of sketch polygon blocks view of what I'm trying to digitize

I am trying to digitize polygons using QGIS 2.10.1-Pisa, but the red fill of the sketch polygon blocks me from seeing the imagery that I need in order to draw said polygon. I have tried going into ...
caitlin's user avatar
  • 31
1 vote
0 answers
57 views

Digitising - Separate fill and line opacities (or remove fill)

I have a client who specialises in aerial photograph interpretation and is in the process of moving from AutoCAD to QGIS. They find the auto 'fill' when digitising polygons really disruptive and ...
RBennett's user avatar