Questions tagged [offset]

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Scaling problem when projected map is overlaid on basemap in QGIS

The problem My georeferenced and projected Matplotlib map overlays with an offset on a basemap projected in QGIS with the same coordinate reference system. What I did: I created a map in Matplotlib ...
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21 views

Automated way to offset overlapping lines of single layer using QGIS [duplicate]

I've got a Line (MultiLineString) layer with 38 features representing the routes of public transport. They are overlapping on several segments of the road network. I'd like to offset the lines on the ...
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2 votes
2 answers
66 views

Variable for symbol width in QGIS expressions?

Using QGIS 3.22.1. I have straight lines connecting two points. These lines are stored in two separate layers, one layer for each direction. I am using a graduated size renderer to display these lines....
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15 views

Qgis2threejs changing rotation point

I am new to QGis and have an issue with the QGis2threejs plugin. I am trying and searching already for some hours, but couldn't find an answer for this - I hope it's not something obvious. If yes, ...
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2 votes
0 answers
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QGIS: an offset line symbol works fine in layout but not in exported image

In QGIS (multiple versions), I have 2 overlapping lines. For clarity i use offset on one of them in the symbol properties. This looks fine in layout manager, the lines are next to each other. When i ...
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3 votes
0 answers
32 views

Adding minimum margin between roads in QGIS

I'm wondering if there's a way to add a minimum space between roads that are too close together in a map. Accuracy is not my goal, I just want to make it visually as clear and clean as possible. Could ...
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1 answer
60 views

Offset raster layer with ArcGIS source in OpenLayers?

In my case there are two layers: raster from ArcGIS REST service (red) and vector in MVT format (blue) The problem is that the raster layer is offset from the vector layer. It is assumed that the ...
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18 views

In my project layers that were originally created by a Garmin 62s are projected 300 degrees/100m differently to the background mapping can you help?

In my project layers that were originally created by a Garmin 62s are projected 300 degrees offset and 100m distant to the background mapping can you help? When I had these display problems in 'A ...
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2 votes
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QGIS - how to offset raster 1 null values filled by raster 2

I have 2 rasters ... Raster 1 has null values of 0 which I have filled in by using values from Raster 2. To do so, I input the following expression into QGIS raster calculator: ("raster1@1" =...
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28 views

qgis2web- do not show as map project

I have a layer with features overlapped with each other. To show them in my map, I put value in the offset (layer properties) so I can see the overlapped lines. However when I used the qgis2web and ...
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How can I snap to an existing raster in QGIS?

I want to crop a landcover raster (cell size 10 meters) to my project region. The problem is that the new raster has almost always an offset. In the example I show below I made the new raster ...
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Merging rasters with pixel/cell offset with QGIS

I want to merge two partly overlapping raster files which are obviously in the same CRS and have the same cell size, while taking the exact values of one of the input rasters in the overlapping areas, ...
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1 answer
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QGIS: Shifting ortophotos by some meters to equalize the mismatch/offset/incongruence with satellite imagery

I got several true ortophotos from environmental authorities. These photos should serve as reference for classifying pixels of satellite records. Though the authorities told me that the georeferencing ...
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6 votes
1 answer
174 views

Making space between tight line features on different scales in QGIS

In QGIS 3.16 I have a shapefile layer where linear features will often be digitised close to each other. These lines are all features in the same layer. Example when zoomed in: Problem when zooming ...
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1 vote
1 answer
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Making many offset lines that are always a set distance from the previous

I've discovered the Offset lines tool in Vector Geometry, which allows you to make a parallel line next to the input at a specified offset distance. What I would like to do is specify how many ...
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What is the size of a geom at a given scale?

I have a dataset with many overlapping grid cells. I would like to represent the cells in such a way that each grid cell is represented with one point. To avoid having the points overlapping each ...
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1 vote
0 answers
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ArcGIS Desktop 3D Analyst Line of Sight

I am trying to do some Line of Sight analysis on some points using 3D Analyst in ArcGIS Desktop. I have a set of points that I've made two copies of a feature class of, one to use as the observers and ...
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2 votes
0 answers
40 views

Making callout lines follow feature offset

I'm looking for a solution to the following problem: Using QGIS 3.16 I'd like to display two point features with the same coordinates. So I set an offset to the symbology of one of them (see attached ...
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1 vote
1 answer
216 views

GeoServer SLD Offset startPoint/endPoint Along Line

I would like to symbolize a line with a point graphic at each end AND offset the graphics slightly along the line in order to look something like the following: The offset is intended to allow the ...
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0 answers
167 views

QGIS - Misaligned vector layers

I am using QGIS Version 3.16.4-Hannover and Windows 10 but I also tested on Linux Mint 20. I have a problem with several imported shapefiles from different sources. I do not know if I do something ...
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1 vote
1 answer
140 views

How to calculate the azimuth of an offset point/line?

After receiving and answer to this question, I am stuck with another problem. For context, my end goal is to assess windward/lee side of a forested edges (line segments) in respect to a dominant wind ...
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1 vote
0 answers
76 views

Offsetting multiple points

I have a multiline shapefile and a point shapefile. The points are supposed to fall in the center of line breaks but when imported to qgis, the points fall on one end of a line break. Is there a ...
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3 votes
1 answer
290 views

Displaying overlapping lines as separate offset lines in QGIS3

I'm drawing lines in a map that represent cables in underground pipes. Sometimes there are multiple cables going through the same pipe, so I'd like to draw each cable as a different line, but want it ...
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  • 131
1 vote
1 answer
37 views

Setting proper rendering order because offset causes odd corners for lines

I used offset on these lines that are on top of each other. How can I make it so the red line is not interrupted by the orange? I can put the orange under the red, but there is another corner where ...
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5 votes
1 answer
115 views

Applying offset to lines that are on top of each other, result like metro map [duplicate]

As you can see from my picture there are a lot of places where the same lines run on top of each other. Imagine a tram map. How can I make sure that the ones that are behind are visible too? Just ...
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4 votes
1 answer
217 views

Different lines that run on top of each other show as different lines

Imagine I have some bus lines each with a different colour, and sometimes the different bus lines run on the same road, but I don't want one of them to disappear. Is it possible to make them show as ...
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1 vote
0 answers
40 views

Huge offset in Lambert Conformal Conic data using ArcMap

I want to display my lat/lon climate data, which is in Lambert Conformal Conic. But when I load it in ArcMap (also in QGIS) it will always be displayed with a huge offset. The data is located in ...
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1 vote
0 answers
211 views

QGIS, labels offset for a line layer

I am working with rule based labels on a line layer and need to move the labels along different axes along the line. I want to move the label 2 along the line a few millimeters. For the label 2, the ...
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1 vote
0 answers
42 views

Specific mixed feature between offset, buffer and intersection

I'm trying to reproduce the steps needed to aim this goal: Given a layer of polygons, I'm want to retrieve for each polygon which is at a distance less than 50m to a 2nd polygonal layer the only 5m ...
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0 votes
0 answers
20 views

Need to arrange the point features in a row or inverted triangle

Need to arrange the overlapping point features in a row or inverted triangle which are in same layer with 0.1 offset. enter image description here ps://i.stack.imgur.com/B8idh.png
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0 votes
1 answer
77 views

Offset points to show multiple points in one location, while simultaneously showing two categories of points

Problem: I'm using ArcMap 10.7.1. I have a dataset that has two categories (A and B) of points and has multiple points in one location. I want to "jitter" or offset these points from each other, so ...
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0 votes
1 answer
108 views

Overcoming zoom level problems for layer offsets in QGIS

In this question I was able to align some labels with polylines representing hectometer points along a railroad. I did this using custom expressions in the "data defined" portion of the labelling tab ...
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2 votes
0 answers
1k views

Parallel Offset of a Polygon Edge with Shapely

I need to offset edges of a polygon by different amounts. buffer() will parallel-offset all the edges by the same amount, and each in its edge-normal direction (and in both directions if applied to a ...
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3 votes
1 answer
652 views

Rescaling and reoffsetting a point cloud with lidR?

I'm trying to analyse a a 3 x 3 metres scan derived from terrestrial photogrammetry (i.e. local coordinates, with 0,0 in the centre of the point cloud) to obtain a DSM. Importing the file in lidR, I ...
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1 vote
2 answers
823 views

Offset Line with Python in QGIS

I wanted to know how could I do a offset line of one layer in a new layer. I take my layers, even if I only have one active (streets) canvas = iface.mapCanvas() layers = canvas.layers() In my case, ...
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3 votes
2 answers
128 views

QGIS legend in layout manager

I have offset some data points in QGIS but I want my points to stay aligned in the legend? It looks funny when points aren't lined up. Anyway I can do this?
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3 votes
0 answers
94 views

Offset Expressions Dynamic QGIS - Unique non-repeating Numbers

I am trying to create a layer style that shows line features that share the same geometry, an exploded view for line Features. What I have done so far via the Offset expressions in QGIS 3.6 ("...
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1 vote
0 answers
96 views

Large offset between two identical vector layers

I want to have a dxf layer to overlay another layer. The dxf layer is already saved to a shapefile with the needed crs. The layer has a large offset and nothing happens when I set the crs to the ...
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10 votes
4 answers
876 views

Connecting offset point symbol to its original position in QGIS

I'm drawing a track where I want to place icons (point symbols), but with an offset so that the line is fully visible. Here is an example: The origin is exactly on the track, therefore when zooming ...
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4 votes
2 answers
1k views

Line Offset Tool in QGIS 3 not working between different layers

In QGIS2 it was possible to use the lineoffset tool between two different layers. You could for examle use a polygon from a different layer to generate an offset line in your linelayer. In QGIS3 this ...
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1 vote
0 answers
38 views

What is the sIgnificance of equator in GPS offset calculation?

I am going through a SAE document where it says that the GPS offsets (NodeLL) should be calculated in such a way that the range should be within one of these: ranges of +- 0.0008191 degrees ranges of ...
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2 votes
2 answers
321 views

Producing offset after georeferencing Soviet topographical military maps from printed control point coordinates in QGIS

I have 'acquired' a collection of scans of (previously top-secret) Soviet-era military topographical maps at a set of 1:25.000. I want to georeference a set of these scans. I know the coordinate ...
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3 votes
0 answers
516 views

QGIS draw line segments with "geometry generator" based on segments angle

I have quite a hard problem to solve here and I don't know if its even possible with the geometry functions in QGIS. I have a line geometry with equidistant vertices, that is, same length segments. ...
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  • 1,806
1 vote
1 answer
84 views

Does QGIS Cloud support offsets for symbology?

I used the offset settings for symbols in QGIS 2.18 but when uploaded to Cloud, the offsets don't seem to exist. Can this setting be used in QGIS Cloud or is there an alternative?
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4 votes
1 answer
2k views

Displaying overlapping polyline segments as multiple lines with offsets

Selecting which polyline is displayed on top in case of segment overlaps seems to be quite a FAQ, however, I would like to find a way to display overlapping polyline segments side-by-side, i.e. as ...
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  • 147
0 votes
1 answer
488 views

Offsetting 100 ft from line feature while editing in ArcMap?

I have the ArcGIS 10.6 advanced lisense. I am trying to offset a line feature using the editor tool. I know that I can do it in COGO, but how to set the unit as ft. In COGO, the offset unit option is ...
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2 votes
0 answers
101 views

PostGIS generate lanes for multilinestring map (ST_OffsetCurve)

I currently have a road network for specific area as multilinestrings. It only shows the road as a single line. I would like to generate lanes for that as well, using some kind of offset. The problem ...
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  • 121
0 votes
0 answers
35 views

Offset line, when zooming out line extends at intersections

[1[]2I'm doing offset in ArcGIS in a cartographic line symbol. Before the offset the line in all scales appears OK. But when zooming out, the offset line extends out at intersections. While when ...
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2 votes
1 answer
111 views

Map Offset, Design not in Line with Map when I load my workspace

We are facing an issue when using QGIS to plan and design FTTx networks. We create the design and it all looks great and print it via composer to be validated on site but when we go back into the ...
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1 vote
0 answers
152 views

How to offset points from a coastline

I need to create a set of points with a fixed spacing and given distance from a a georeferenced coastline. My idea is trying to obtain a parallel line and then placing points on it. To do the first ...
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