Questions tagged [offset]
The offset tag has no usage guidance.
88
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Offsetting categorised symbology for features overlapping (only when features are overlapping)
I'm trying to look for a solution to a problem I am having with a polygon layer in QGIS.
I've produced a 'Boundary' layer in QGIS, such boundaries are leveled the lower levels are inside the higher ...
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32
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Creating offset lines
I have a dataset of coordinates describing central lines of various roads (distanced by +-1m).The goal I would like to achieve is that based on a given coordinate and "traveled" distance I ...
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31
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Conducting viewshed with building heights using ArcGIS Pro
I am seeking to conduct a viewshed (using ArcGIS visibility - spatial analyst) of from an observer point, which is a human standing on a hill. Once I have added the single input point, I have added 1....
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QGIS offset line shows perpendicular tags issue [closed]
I'm adding data to a road network using LRS. I am offsetting the data to show different lanes of the road. In the example below I only have data for 1 lane.
However, some of the data shows an ...
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42
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How to apply the vertical offset/shift properly in WKT
We are trying to use a vertical offset in one of our WKT which is a GDA94/MGA zone 52 CRS by integrating the Australian Height Datum but it does not apply the vertical offset. I am wondering if we are ...
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59
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How to select objects by their offset location in QGIS?
I have a line layer where I have lines that have lines that have the "same" geometry, only reversed. I would like to select only one direction at a time. In the symbology I set an offset and ...
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3
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190
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Offset/move polygons in specific direction QGIS
I want to offset/move the polygons in the direction north-north-western direction and perform this task 3 times. I can do this manually but it would be an approximation and I want them to exactly ...
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115
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Duplicate line with offset if second field is filled
I have a line layer with two fields Field A and Field B using the same value representation. Every object has a value in Field A, only some objects have a value in Field B.
I am looking to create a ...
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192
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Randomly offset duplicate points along linestring X meters using PostGIS
The query below selects all duplicate points on a line, which overlay one another, then randomly assigns each point location within a certain radius. The last step assigns each point back on what I ...
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378
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Offset of markers and polygon depending on zoom level in Leaflet
I have run into a problem with a suspicious offset what comes to self created polygon using Leaflet. I am creating a website using NodeJS (and Pug for rendering the HTML itself). Using Leaflet, I ...
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82
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Interpolating a regular lat/lon grid with latitude line at Equator to a shifted grid using Python
I am very new to GIS and have to work with some precipitation data contained in two different datasets with comparable coordinate systems, but differently offset/shifted coordinates:
NASA GPM IMERG ...
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295
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Offsetting horizontal line labels in QGIS
In QGIS 3.22.8 I have 100s of linear features on a map. I want to label them horizontally, but don't want the label sitting over the line. I can find the Horizontal placement setting, but no offset ...
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98
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How to set up rule based offset points symbology in QGIS
I use QGIS 3.22.2 and I have points datasets of records from ecology surveys with column of "ID" of individual record and column "Species" with few different values (for example: '...
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75
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Y coordinate of mbtiles is in descending order (tippecanoe, ogr2ogr)
I want to convert a geojson to MVT and upload it to s3 to use it with Mapbox GLJS.
I tried this tutorial https://geovation.github.io/tippecanoe-directory-support.
With tippecanoe --no-feature-limit --...
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182
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Weird artifact when offseting linestring within polygon
I have a code that, starting with a main line that crosses a polygon, creates a sequence of parallel lines by offsetting the main line to both directions and then clipping the parallels with the ...
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72
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Offset raster Z value with second raster
I have 2 rasters in QGIS - one with holes and the other a full extent
Both rasters are the same CRS and extent, however the difference is their Z values due to being recorded differently.
Effectively, ...
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89
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Offset lines to find self intersection lines
I've been trying, with no success, to create of negative offset from line shapefiles (contour lines, actually). My objective is, with the x offset I define, to use the topology rules to identify the ...
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53
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QGIS 3.10.3 line out of the route
I am using QGIS 3.10.3. I try to symbolize routes in both direction (CL1 and CR1). Using the rule based symbology and created 4 sections according to the values. I filtered the data using <= and &...
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399
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Offset points in QGIS using attribute values for Bearing and Distance?
Background: I am working with a biodiversity researcher who will be collecting field data on frogs in Peru over the summer. Because of the dense canopy at the field site observations are taken by ...
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385
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QGIS Offset Points by value
I've got one layer with a line (e. g. a road) and one layer with points (e. g. trees along the road). So far, the points are placed right on the line, but the attribute table of the point layer has a ...
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95
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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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2
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472
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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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70
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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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168
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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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37
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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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133
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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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24
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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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53
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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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33
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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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227
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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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163
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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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200
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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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387
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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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480
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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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37
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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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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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105
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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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536
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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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281
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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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401
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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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168
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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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850
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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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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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443
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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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565
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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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65
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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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324
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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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79
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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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32
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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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204
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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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