Questions tagged [offset]

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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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1answer
35 views

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 ...
6
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1answer
83 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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1answer
19 views

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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31 views

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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16 views

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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0answers
27 views

Sumo's netconvert netoffset

Can anyone tell how Sumo's netconvert is using netoffset (lat,lon offset) when we convert osm file to .net.xml file in order to import in sumo ? Netoffset is present in .net.xml file in location tag.
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0answers
33 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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1answer
45 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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0answers
80 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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44 views

QGIS / GRASS GIS How to make offset / parallel lines with Z values

Please how to make something like v.parallel (GRASS function in QGIS) or offset (QGIS) from 3D line with keeping Z value (with z geometry). My vector 3D line is center of river and i need to make ...
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1answer
73 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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0answers
43 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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0answers
23 views

Creating Road Edge of Pavements from Road Centerlines using QGIS

I have a Road Centerline data set and would like to use it to create a Road Edge Of Pavements data set that I could then export to a CAD format. Is there an easy way to do this in QGIS?
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17 views

Confused on gainbias.txt values using OpticalCalibration Orfeo-Toolbox

I'm currently working on a preexisting project that utilizes Orfeo Toolbox OpticalCalibration. There are different satellites that each have different data regarding solar irradiance that the project ...
3
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1answer
178 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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1answer
32 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 ...
4
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1answer
62 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 ...
4
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1answer
177 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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0answers
38 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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0answers
147 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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0answers
37 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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18 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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1answer
35 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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1answer
73 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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0answers
970 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 ...
3
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1answer
389 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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2answers
604 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, ...
3
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2answers
83 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?
3
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0answers
73 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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0answers
66 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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4answers
662 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 ...
4
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2answers
981 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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0answers
36 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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2answers
270 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 ...
3
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0answers
442 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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1answer
78 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?
4
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1answer
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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1answer
219 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 ...
2
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0answers
92 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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0answers
28 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 ...
2
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1answer
102 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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0answers
134 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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0answers
851 views

Offsetting polygons by meters with clipper

I would like to create buffered polygons of locations (towns, villages etc) in order to use them for searching in radius. This is what I would like to achieve (units for ilustration): This is how I ...
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2answers
2k views

Adding offset to overlapping lines in qgis in same layer?

I have ONE layer of linestrings and some of them are overlapping, I need to display the overlapping lines with an offset. I have seen the solution using the offset in style for the whole layer but it ...
5
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1answer
346 views

Is there a way to use windowing functions (lag, lead) within the QGIS Field Calculator?

I am keen to compute a windowing function on values in QGIS. I was not able to find a lag/lead function. I think this could be emulated using @rownumber and $currentfeature, but I am not expert in ...
4
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1answer
2k views

ArcPy Solution for Copy Parallel

This question has been marked as a duplicate multiple times now. Please read the entire question before flagging it as a duplicate. The previous "duplicates" for questions about copy parallel do not ...
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0answers
169 views

GDAL gdalwarp usage on QGis - how to set cell position of the clipped raster to be equal to the origin of the source cell

I work on a Windows QGis 2.14 platform. I need to clip a raster with a vectorial polygon. When I use gdalwarp I cannot find where is the setting for establishing the output graticule position respect ...
3
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1answer
2k views

Lat/Lon point transformation/offset on arbitrary segment

I'm looking for something very similar to those stack exchange GIS questions: Algorithm for offsetting a latitude/longitude by some amount of meters, How to convert (geodetic pose + cartesian offset) ...
3
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1answer
3k views

Create offset polygon

I am looking for a method that enables to create offset polygons with a defined distance in ArcGIS. Like in Sketch Up, it allows to create the exact same shaped polygon as its input (selected) polygon....