# Questions tagged [perpendicular]

In elementary geometry, the property of being perpendicular (perpendicularity) is the relationship between two lines which meet at a right angle (90 degrees).

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### Creating tangential lines at points along shoreline in QGIS

I want to create tangential lines for each point along a shoreline in QGIS, such as the dashed line I've hand-drawn. These points are not randomly spaced, they each represent the angle at which each ...
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1 vote
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### Extract central part of automatically created perpendicular lines in QGIS

I have a set of lines (roadways) on layer A and a set of (mainly) parallel lines (sidewalks) on layer B. I want to create perpendicular lines at a given distance that extend from the layer A center ...
• 1,504
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### Creating perpendicular line between two points inside polygon using PyQGIS

I'm looking for a solution in PyQGIS to create a cut line at the midpoint of another line that connects two points within a polygon. The objective is to cut the polygon into two parts. In fact, this ...
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277 views

### Making perpendicular lines to existing line features in ArcPy with ArcGIS Pro

I have reviewed and tried multiple different answers to similar questions but have not got the results expected. I have a layer with 4425 polyline features and want to make a perpendicular line ...
• 21
30 views

### Creating line that passes a point

I am going to draw a polygon around each crosswalk in a city. The problem is that I have a point in the middle of each crosswalk but I need to have a line so that I can make a buffer around it to ...
246 views

### Draw line perpendicular to other line in ArcGIS Pro core host application

I am trying to draw a line perpendicular to a line segment in an ArcGIS Pro core host application. There used to be a construct point in the ArcMap SDK but it is not there any more. This is being ...
15k views

### Creating perpendicular lines on line using QGIS

In QGIS I want to create perpendicular Lines on another Line (River). The Lines should be created on points on the Line and should have a length of 40 Meters. I want to create the red lines in the ...
• 177
3k views

### Creating perpendicular lines along stream at points

Using ArcPy, I'm trying to figure out how to draw perpendicular lines along my Streams feature class. I have a set of points, that are snapped to my stream centerline. I've seen the "Generate ...
• 599
553 views

### Creating perpendicular line from point to nearest line

I have a layer containing lanterns (point layer, yellow blocks) and a layer containing hectometer signs (point layer, blue dots). In order to find the closest perpendicular distance from a lantern to ...
62 views

### Moving field from source feature to new feature

I am attempting to build a layer of perpendicular line segments from a point on a line to a line, but in the process, I would like to bring over the field data from the point layer. I have a field in ...
1 vote
119 views

### Measuring length from one polyline vertex to other polyline

I have two polyline which represent the river bank of a particular section of a river drawn based on Satellite imagery at 1984 and 2019. As you can see in the picture, it is drawn in red line with ...
304 views

### Copying set of points perpendicular along polyline

I have a polyline which represents the middle of a river. Perpendicular to this polyline there is a layer with a set of points. These points all have an "X" and "Y" coordinates as well as a height ...
• 51
2k views

### Creating perpendicular line transects in PostGIS

I have a river network (Line with arrow as shown in image below) and I need to create perpendicular lines to the river at every 15 meters as you walk along it (see image below). Is there a function in ...
• 650
1 vote
107 views

### Analyzing single Polygon or Polyline that overlaps itself using ArcObjects?

My current process is to determine obstructions in an area and determine properties of those obstructions as they relate to a centre polyline. Per the image below I take a polyline which denotes a ...
• 437
1 vote
158 views

### Calculating perpendicular line in ArcPy only works for shapefiles?

I'm trying to use this field calculator expression on field Shape to generate a perpendicular line, of 0.01m, at the midpoint of each existing line feature in ArcGIS: CALCULATE FIELD (data management)...
• 61
1 vote
537 views

### Create a orthogonal lines [duplicate]

I have a shapefile of lines and I would like to know an Arcmap tool to create a new shapefile with orthogonal lines from the midpoint of that existing line shapes. I know that it is possible to do it ...
• 11
2k views

### Draw shortest line between a point and a line

I am trying to draw a line between a thousands of points and a line using QGIS. I then want to carry out some calculations on the new lines to see which polygons they intersect in a different layer. ...
• 317
231 views

### Shortest path creation between two lines

I've a raster of temperature of a river, I'd like to extract values horizontally, so from bank to bank, shortest path. so basically extract pixel values along the red lines in the schema I did. What ...
• 141
719 views

### Create a perpendicular line of points to another line

i have two problems over here. QGIS 1- I need to create a perpendicular line to connect multiple points to multiple lines but these lines have to follow a sequence of column. 2- And these ...
6k views

### Automated creation of perpendicular lines between a point layer and a line layer

I am using QGIS and I am looking for a script, or a plugin, that can create a large number of perpendicular lines from a point layer to lines in a separate line layer. So far, I've tried to use the ...
• 155
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### Generating line offset, perpendicular using PostGIS?

I'm trying to generate two line offsets from a line but I'm having problems generating them as they should be. Using PostGIS select st_asgeojson(st_union(the_geom)) from ( select ST_Line_Substring(...
• 51
3k views

### Draw a perpendicular line between point and line layer

I have to iterate over a point and line layer to draw the perpendicular line from each point to the nearest line. The QGIS geoalgorithm "DISTANCE TO NEAREST HUB" isn't helpful because the nearest hub ...
2k views

### Is there a shortcut to create only right angles while editing?

While digitizing in ArcGIS Pro, I am wondering if there is a way while creating segments to allow only right angles. I understand that this can be done manually by entering direction, deflection, or ...
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### Rotate symbols perpendicular to line angle (ArcGIS)

I have lines representing curving streams (blue line in the Picture) and want to angle symbols perpendicular to the angle in their particular Locations (point features symbolized as red lines in the ...
• 379
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### Algorithm to draw a perpendicular line on Google earth (KML)

I have two points say A (lat,lon ) and B(lat,lon) and I want to draw a perpendicular bisector line to AB such that any point (C) on the perpendicular line satisfies AC=BC. All I want is a function ...
• 141
1k views

### Calculate distance from all points to all lines within 10km using FME?

I have a polyline shapefile and a point shapefile. The points are along the polylines. There are over 100 lines and over 10,000 points. I want to calculate the perpendicular distance from every ...
• 21.9k
1 vote
2k views

### Offsetting points perpendicular to line using ArcMap

I'm trying to create offsetting points perpendicular from a line and have run into a roadblock in ArcMap 10.1. I have the ability to use the ET GeoWizards tool 'Points Along Polylines' but the tool ...
• 83
10k views

### Drawing perpendicular lines in PyQGIS

I have a situation like this: What I need to do is to connect each point to every line that is at most, let's say 200 m, away from the point. In other words, I need to draw a perpendicular line from ...
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