Questions tagged [azimuth]

An azimuth is "a [particular kind of] angular measurement in a spherical coordinate system."

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Calculating point intersection from Azimuth and UTM coordinates

I have a control board point(CB) that I need to calculate the position of. I took the azimuth and the elevation of that point relative of two other known points(of which are known Easting, Northing ...
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How to convert/desurvey Directional Survey measurements into XYZM points?

I have a spreadsheet of Wellbore Drill data and would like to generate an XYZM path (LineString) that connects the surface hole location (SHL) to the bottom hole location (BHL) using the actual path ...
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Syntax for specifying a parameter input from an attribute field in QGIS model designer

If I have a layer with an azimuth field, I can easily use that field to define the direction of the wedge buffer by clicking on the button next to the azimuth value and specifying the field type and ...
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Drawing a segment of azimuth from values defined in Leaflet

Following the query: QGIS drawing segment of azimuth from values defined I would like to do something similar in Leaflet. Unfortunately, I cannot use the QGIS2Web plugin for this purpose, because I ...
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QGIS drawing segment of azimuth from values defined

I have the range of azimuth defined in the data attribute table as you see below: And as a result, I want to have some visual section of the bearing, determined by the azimuth I and azimuth II values ...
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How to "unravel" a polar continent (i.e. Antarctica) from azimuthal projection and convert it into equirectangular?

I have very recently gotten into cartography and map projection, and I wanted to visualise the map from Avatar: The Last Airbender into a proper equirectangular map. Here is the map for those ...
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Adding Azimuth to each point in GeoJSON

I have a GeoJSON which returns a set of points, for each point I have different azimuth(rotation) is required. I have tried using the rotate property of OpenLayers, however when I use it all the point ...
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How to calculate azimuth from the south, latitude, departure with two points?

I'm making a Line class in python and the attributes we need to put in are the first point, end point, latitude, departure, distance, and azimuth (from the South). The points consists of eastings and ...
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Calculating azimuth angle from two X,Y,Z points

I'm following @whuber's post for calculating azimuth and elevation angles based on two vector3's. The elevation equation works great and gives me numbers that makes sense. I'm running into issues with ...
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PostGIS: How to find Nearest Neighbour but only within a direction range?

I am attempting to find the nearest neighbour to a geometry in a certain direction but am becoming stuck at the planning stage. I understand the basic tools that I need but am failing to find anything ...
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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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Drawing with interior angle and distance

In QGIS Azimuth and distance plugin draws with azimuth angle and distance. I want to draw with interior angle between consecutive lines. For the starting point and base station(reference point to plot ...
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Azimuthal Orthographic projection

I'm trying to create a globe view in QGIS 3.16.1 with an Azimuthal Orthographic projection. This is my projection codes: +proj=ortho +lat_0=32.4279 +lon_0=53.688 +x_0=0 +y_0=0 +R=6371000 +units=m +...
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Calculate Azimuth from polygon in GeoPandas

Is there a simple way / ready-to-go function to calculate the azimuth of 2D-polygons in a GeoPandas DataFrame? My goal is to eventually compute azimuth angles of building footprints. Most of the ...
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Adding direction and lengths of semi-major axes of ellipses to their attribute tables in ArcMap [closed]

I made a polygon shapefile with hundreds of ellipses (using the ellipse tool). I want to know their orientations and the lengths of their semi-major and semi-minor axes (and add these to their ...
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PostGIS rotating a line string to be vertical when viewed on screen

I'm building a Node.js application that will display Google Maps satellite images of golf course holes. I have 2 GPS points I'm pulling from a PostgreSQL database and I need to be able to take any ...
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Pyproj inverse transform returns NaN with EPSG that is not 4326

I am using pyproj inverse transform to add azimuth and distance "info" to an ordered geodataframe and keep getting unexpected NaN results when I use a local UTM-based EPSG. It works fine in ...
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Using GeoPandas to find crossing azimuths

I have got a series of UTM coordinates and azimuths like that: Point one: Z23, 603484.00m E,7781714.00m S, Azimuth 222° Point two: Z23, 600593.00m E,7781310.00m S, Azimuth 137° Those azimuths (should) ...
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Orientation of linestring with North arrow pointing up

With PostGIS I am trying to calculate the azimuth of a linestring in order to use it then in a print composer in QGIS, using an atlas. But since the azimuth is calculated by comparing startpoint and ...
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Finding coordinates by Azimuth

I am working on a forest project. I have one central point (I know coordinates of it), than I have azimuth and distance of trees from this central point. How can I find coordinates of trees? p.s. ...
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Calculate azimuth angle in QGIS

I have a few exercises to do and I can't do it at all. I am newbie to this field. I use QGIS 3.4. Exercise 1 What is the azimuth between the starting point and the Z place? I must write the value in ...
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Azimuth calculation in QGIS 3.10

I am calculating the azimuth between two points whose position is defined in WGS84 coordinates. If I Open Attribute Table -> Open Field Calculator and ask for degrees( azimuth( ...
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3 votes
1 answer
119 views

Azimuth calculation, extending lines

I am trying to create a line feature as the result of another line in PyQGIS. The new line should start, where the old "ends", face the "same direction" and should have a defined length of X. ...
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4 votes
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Compute the azimuth between two UTM32N points using Java GeoTools

I am using Java GeoTools to compute the azimuth between two UTM32N points, e.g. between POINT(496383,5419109) and POINT(528196,6070949). Is it possible to do so without converting the points to WGS84 ...
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Abnormal results projecting WGS84 to local Azimuthal Equidistant projection with pyproj

I am trying to project regular WGS84 coordinates to a local projected system (Azimuthal Equidistant), using meters and centered on the eiffel tower (as an exemple). I am using python 3.8.2 and pyproj ...
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Why there is a different relative to Geodetic Azimuth from Arc Map from the original datums and transformations?

We where conducting a displacement for some BM (Old vs New values), we made calculations on different platforms for the North, East, Elevations. We used the NGS NCAT, Inverse 3D, TBC and manual ...
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Getting the latitude and longitude coordinates (to plot 2D) from a well survey

I basically want to do what you did here How to create a layer of directional/horizontal wells?. I am able to get the coordinates from a well survey to create a shapefile to be able to visualize the ...
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5 votes
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332 views

Azimuth calculations - PyQGIS

According to the QgsDistanceArea docs, an azimuth for computeSpheroidProject should be in radians, clockwise from North So, to build a new point with computeSpheroidProject i use math.radians(...
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Selecting a line segment with an azimuth value closest to the azimuth value of another line segment in QGIS

I have a road network dataset and a dataset that consists of multiple disconnected lines of varying lengths in QGIS. Most of these lines are (largely) parallel to the road network, but their shape ...
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Determining azimuth of continuous polyline segment

I have a polyline which represent the river bank of a particular section of a river drawn based on Satellite imagery. As you can see in the picture, it is drawn in red color. I have also a vertices ...
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4 votes
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Sentinel-1a real azimuth resolution

I was exploring this satellite's payload characteristics on ESA's website and I saw that it's azimuth resolution varies a lot. For example azimuth resolution for IW mode is 22m (https://sentinel.esa....
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Calculating azimuth between 2 points

I have been trying to use the azimuth expression function editor between 2 points. However, I am not getting it to work. I am obviously misunderstanding how to create the expression itself. This is ...
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4 votes
2 answers
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Calculating azimuth values relatively along line for its segments using PostGIS

I'm trying to make this calculation in SQL with PostGIS: azimuth_1 + (Sum rel_azimuth_2 to rel_azimuth_7) rel_azimuth_x is always the angle beetween the actual subsegment_x and one subsegment_x-1 ...
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2 votes
1 answer
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Calculating azimuth values along line for its segments using PostGIS [closed]

How can I calculate the azimuths along a line on its segments ? Is there a function in PostGIS for this? I want to calculate the min, max, sum and avg value of the azimuths for each segment.
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4 votes
1 answer
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Calculate weighted azimuth/bearing of a line

Given the line LINESTRING(-9.086532643219698 -7.939337106873815,-1.396102955719698 -0.9775148048290135,-0.780868580719698 -0.7138718839794582,-0.077743580719698 -0.6699297767574899,0.581436106780302 ...
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1 vote
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Calculating Satellite Azimuth from Landsat WRS data?

I found the below answer in regards to how one identifies the satellite azimuth from Landsat Images, but am not sure how you translate the path/row into azimuth angle. I have searched for such, but am ...
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3 votes
1 answer
101 views

Find the side of a polygon pointed by an azimuth

I have a dataset of points (longitude, latitude) and I used QGIS get a Voronoi diagram of these points. Each point has an azimuth and a wedge width that I also managed to visualize in QGIS. As you ...
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2 votes
0 answers
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Find orientation of rectangle in PostGIS for QGIS composer

I am storing rectangle in my DB in order to automatize the creation of technical maps of a networks. I am creating these maps in QGIS using the print composer. Many of these rectangles are oriented (...
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1 vote
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Calculating azimuth of direction in OpenLayers? [closed]

I am developing an application with OpenLayers and I need to calculate the angle between two segments or directions. I thought about getting the azimuth of those segments and then calculate the ...
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1 answer
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QGIS - tool to plot polygon from point with known bearings and distances

Is there a tool that can convert a point dataset to a polygon based on some known parameters. We will have 1- x,y Azimuth 3.Distances in m for a- point in the direction of 2 (the azimuth) (200m), ...
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2 votes
1 answer
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Using Click locations to determine azimuth in QGIS 3

I am using QGIS 3 64bit. While adding points to a shapefile (layer), what expression captures the insertion point coordinates of a point feature to use as a start point for an azimuth determination ...
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2 votes
2 answers
468 views

Azimuth calculation from One to Many Points in PostGIS

I have vector data of 3D City Model in PostgreSQL database. So from my data geometry column, which is a surface geometry. (These are geometries of all the surfaces of buildings). I had extracted the ...
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1 vote
1 answer
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Calculating azimuth for shortest line from point to polyline in QGIS

How can I calculate the azimuth for the shortest line from a point (start) to a polyline (end) in QGIS? NNJoin calculates only the distance and joins the attribute from the line to the point ...
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2 votes
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How to find coordinates of a triangle with azimuth?

I am just starting out in GIS and it's been a long time since I took math in university. I am teaching myself through a textbook but there are a few questions I am stumped on. Essentially I have a ...
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1 vote
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Attributing polygons based on line attributes

I'm using QGIS 2.18. I have a grid that I need to calculate Azimuth and length for each side. Most have 4 sides but some ( see Gird C below) many more , up to 12. My process now convert Polygon to ...
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2 votes
1 answer
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How is ST_Azimuth (in PostGIS) calculated?

What algorithms are internally calculated in PostGIS? Can you explain it with simple code? (I want to know the standard of true north.)
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6 votes
1 answer
433 views

Iterate through a list of polygons' centroids in QGIS

I try to calculate the azimuth between a row of polygonsheets to print the number of the last and the next sheet inside the sheet in direction of the last and the next sheet. This should help to ...
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2 votes
1 answer
1k views

Calculating a reverse Azimuth

using QGIS 18.16 I am trying to figure out how to cal a reverse azimuth. Basically the opposite direction. So if i have a azimuth of 163, I subtract 180 which gives me -17. I some how need to write ...
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0 votes
2 answers
446 views

Angle conversion for azimuth angle due east counter clockwise to due south clockwise

Suppose a given azimuth angle is calculated due east counter clockwise (ccw), and I want to convert it to due north clockwise, so I found the following formula, # limit the range to 0..360: r....
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2 votes
1 answer
416 views

Azimuth (bearing) changes depending on map/project projection

I'm trying to calculate the initial bearing that is needed for the great circle between 2 points. As an example, let's say from London to New York. There are multiple calculators online and they ...
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