A set of ordered co-ordinates that represent the shape of geographic features too narrow to be displayed as an area at the given scale (contours, street centrelines, or streams), or linear features with no area (county boundary lines)

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18 views

Drawing line and finding bearing using ArcGIS for Desktop?

I need to draw a line from a point within a polygon to the edge of said polygon. I do not need to know the length of the line, only the bearing (in degrees) for the line. We are using ArcMap 10.3.1
1
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1answer
54 views

Shapefiles failing to merge

I am attempting to merge two shapefiles together. Both are line features. I have merged these files before and it worked successfully however due to problems during editing I have to start again and ...
2
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0answers
105 views

Connect two contour lines with calculated line length

Is it possible to make a plugin for QGIS like PEGGER for arcview 3.2? Problem is, how to make path over contour lines with a gradient in percent? Formula is: K= e*100/G*M ; K=10*100/0.08*10000=1.25m ...
1
vote
1answer
26 views

Verifying whether point lies on line or not when both given in GCS?

Googled and tried to look on Esri's forum but couldn't get anything. Rather got things which were verifying if the point is within a polygon or not. But I want to know, if I have starting point and ...
5
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2answers
75 views

Placing random line segments within polygon?

I would like to generate multiple line segments of a fixed length, a random bearing, and both segment endpoints within the polygon. It's not clear from the example, but it's fine if the segments ...
1
vote
1answer
40 views

Calculating length (in meters) of GPS track? ArcGIS 10.3.1

I'm trying to calculate the length of a GPS track in ArcGIS 10.3.1. What I've done so far is: Converted track using the "Points to Line" tool Opened attribute table Made new "Length" column Opened ...
1
vote
1answer
405 views

“construct points” troubleshooting

Apologies for the potential simplicity of this problem but I just cant find a solution! I need to create a series of points along a line at a specific interval. I am using ArcMap 10.2.1 and the ...
4
votes
1answer
46 views

Positioning of graticule labels in QGIS 2.14.1

I have a map grid (line, shp) that was created with MMQGIS. The X and Y coordinates of the lines are stored in the the attribute table, which makes labelling the lines an easy process. My problem is ...
2
votes
2answers
218 views

Split polygon based on line segment

I am trying to split a street polygon based on the segment ID of the street, giving them the same segment_ID in the attribute table of the street lines. I did not use the line feature class to derive ...
2
votes
1answer
40 views

For Loop Maximum Minimum Distance Between Two Lines

I have a table of line/lane ids in a table called matched_lanes, and I am trying to create a lateral query that on each id in the table to find the maximumum minimum distance between each point. ...
2
votes
0answers
13 views

Export lines or graphics without losing the details / generate graphics without having lines overlapping [duplicate]

I am new to ArcGIS. How do I easily reproduce a spatial diagram such the one attached (Picture); from shapefiles on ArcGIS. I very often have to reproduce networks on Powerpoint at different scale ...
3
votes
1answer
34 views

How to split every arc in a shapefile exactly in half?

I have a line shapefile containing several thousand arcs of varying length, representing a road system. I need to split each arc exactly in half along it's length. The resulting output would thus ...
4
votes
1answer
40 views

Create Two Ellipse/Arcs from Straight Line Segments

I have thousands of straight line segments (all separate features). I need to convert each straight line segment into two arcs, with the arcs opposite of each other. For example, I used the XY to Line ...
2
votes
1answer
30 views

Rule-based rendering of one line with two line styles

I need to show parts of a network, which meet two criteria at the same time. So I would like to use the style of criteria 1 and the style of criteria 2 side by side (see picture). The problem is, that ...
1
vote
1answer
37 views

JTS: split arbitrary polygon by a line

I just discovered JTS through this stack exchange. I'm looking for a Java solution to cut an abitrary polygon into two by a line. I've implemented one that does fine on convex polygons, but it messes ...
1
vote
1answer
34 views

Snap or Move a Point to its closest attribute matching line ArcMap

I have a point feature I want to snap or move to its closes line feature. Now this is easily accomplished with the Near tool. However I want the Point with its unique name attribute only to move or ...
0
votes
2answers
28 views

Connect Multipoint Geometry type to create line

As you can see in the pic below i have some points "Sông Vĩnh Trà". Their Geometry type are Multipoints. They are parts of a river, so i want to connect them to display the river on the map. I tried ...
7
votes
3answers
3k views

A tool or way to Extend line by specified distance?

I have a purely aesthetic layer which has arrow symbols. Some aren't showing up right because the line is too small. I have selected maybe 50 records where I need to extend this line by a given number ...
7
votes
2answers
175 views

Drawing line between points at specific distance in PostGIS?

I have a data of points along the streets, I would like to turn those dots into simple coloured lines. Any pointers what this problem may be called or any algorithms that can help me solve this? I ...
1
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0answers
46 views

Python QGIS reliable intersection/overlap check between points and lines

In my script I need to check, whether a point I created stored in a memory layer lies on a polyline, which is in another memory layer. I am certain, that the point does overlap/intersect the line, ...
2
votes
0answers
46 views

Identifying lines of one feature class that touch another feature class with their endpoints in ArcMap? [closed]

I want to find out and select the features of one feature class, which both endpoints touch another feature class. In the picture above it would be the left pink line which touches feature of ...
6
votes
1answer
9k views

Calculating line segment lengths within polygon using ArcGIS Desktop?

I have a layer with line segments and a layer of polygons (in this case, buffers around points). I need to create a new field for each polygon that contains the total length of all line segments ...
0
votes
1answer
57 views

How to iterate through each vertex in a line?

I am working with ArcObjects in building functionality for a toolbar inside of ArcMap. Once I start an edit session, I use the tools to manually draw a line. I am trying to loop through this line get ...
0
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0answers
28 views

Drawing vector lines over rivers OpenLayers 3 with OpenStreetMap

I would like to know if drawing vector lines over rivers is possible with OpenLayers 3 with OpenStreetMap and if it is, how can I draw vector line of a said river. For example, I need to get a river ...
2
votes
1answer
30 views

Split tool not splitting line as expected in ArcMap?

I have a long line that I would like to split. Therefore I start editing, I select the line and, once I chose the split tool, I click where I want to divide my data. What I noticed is that in some ...
5
votes
1answer
108 views

How to get smallest line segments from intersection + difference of multiple overlapping lines?

Inspired by this question, and this excellent answer. I have multiple overlapping lines and want to extract the complete intersection of them. So from this sample data SELECT id, geom INTO stackex ...
0
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1answer
17 views

Illustrating the average utilization of trails by hikers

I have a question about illustrating the average utilization of trails by hikers. I have made a survey where I asked the participants which trail they used for hiking.There are a lot of trailoptions ...
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0answers
34 views

Expanding shapefile shapes

Given a coastline definition (e.g. NOAA GSHHG or OSM Coatlines), I would like to "expand" or "grow" the shape defined by a set amount, e.g. 100m. For example, given a island like this (with 8 ...
3
votes
1answer
60 views

Point-to-point Link

I have a point layer of 64 points. Now I want a point-to-point linkage line layer containing 64*64=4096 lines. Is there a way automatically do that?
4
votes
1answer
51 views

Overlapping line aggregation+trim in PostGIS, while summing values

I'm sorry for the vague title, I didn't really know how to name this. I am working on a project that visualizes and simulates 17th century trade. For this project we also use so called Minard lines to ...
0
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0answers
31 views

many points to many line segments - and retain attributes of points

I would like to take a feature class of 22571 points (with time (in seconds), lat/lon and various other attributes but for now I care most about the ON/OFF attribute) and connect those points into a ...
8
votes
1answer
10k views

Draw lines from points in QGIS

(I found here similar questions but they all reffer to ESRI's programs, and I use QGIS) I have a point layer and need to draw a line passing through or in the vicinity of the points (up to 0.5m ...
1
vote
0answers
111 views

Method for identifying upstream segments

I need to add to the attribute table of a stream network layer a column that can identify all upstream segments that contribute to the segment (for each segment). My best idea at the moment is to ...
6
votes
2answers
3k views

Checking "connectedness'' of line shapefile in ArcMap?

I inherited a line shapefile in ArcMap that is used to represent a road network. The problem is that the road network is pretty large and it is impossible for me to: Tell if the end of each line ...
1
vote
1answer
279 views

Is it possible to use Leaflet.draw on a map in R?

I want to develop an application where a user can draw a line, polygon etc... I currently develop with R and leaflet package and I found that it is possible to work with Leaflet.draw under ...
1
vote
1answer
30 views

Make given number of points at evenly spaced on line in QGIS?

I have a shapefile lines representing historical flight paths of aerial photography. I have the number of photos taken for each path and the number of the first and last photo, plus the ID of the ...
1
vote
0answers
18 views

how to draw curved line in a qgsmapcanvas

i am working on a project with qt4.8.6, api c++ of qgis 2.8.2 we need to draw curved line in a vectorlayer by given 2 points and an offset by exemple is it possible to do that with the c++ api of ...
3
votes
1answer
108 views

Nearest distance between point layer and line layer, QGIS

I have two layers , line and point layer. I need to make line layer which connect all points to nearest line features? Is someone made a plugin for qgis? This is very important tool which missing in ...
4
votes
2answers
81 views

extending existing line in QGIS by adding nodes

I am trying to extend an existing line by adding nodes to it. Is this possible to do in QGIS without creating a whole new line?
2
votes
1answer
52 views

Can't Find the Split selected features with selected line from another layer tool

I'm trying to split a selected polygon features with a selected line from another feature layer. I, however, can't seem to get the tool for this to show up in my advanced digitize toolbar. In ...
0
votes
1answer
526 views

Update Point ID as Start Node and End Node to Line through FME

I need your help to perform the below process in FME. I have two layers: Pole Data (Point) and Cable (Line). Cable has no ID. I want to keep the Cable which is going through the Pole. Then make the ...
0
votes
0answers
21 views

Advanced Cartography of a line feature [duplicate]

I'm attempting to duplicate the maroon boundary line. I've used offsets in the line symbol editing but can't seem to achieve the smooth blend you see the picture. I've tried using multiple layers of ...
11
votes
4answers
13k views

How to Partition Line into Segments using ArcGIS for Desktop?

I have a shapefile of U.S. states. I extracted the boundary between two states, resulting in a line segment. For example, the boundary between Georgia and North Carolina. Is there a way to further ...
1
vote
2answers
110 views

How to get ST_MakeLine ready for QGIS?

CREATE VIEW new_line AS SELECT point1.gid, ST_MakeLine(point1.geom, point2.geom) FROM point1, point2 WHERE point1.gid = point2.gid; It's possible to load the layer but QGIS says 'There is no entry ...
7
votes
1answer
213 views

How to connect centroids of lines sharing the same intersection in QGIS?

I'm looking for a big help to accomplish the following task: I have this street network of the center of Turin (IT), composed by lines representing streets, and black points representing ...
0
votes
0answers
36 views

Profile graph from 3D line features in ArcGIS Online

I need to create a web application in argis online to show a profile for a selected 3D line feature. All elevation profile web apps and template I found returns DEM Z values for a selected feature. Is ...
2
votes
2answers
240 views

how can we save vector layer as a file in openlayers

Im using mapserver + openlayer for GIS API and im new to GIS. I'm done with drawing line, point and polygon features in openlayer. but not being able to save it in some shapefile afterwards i got to ...
3
votes
1answer
73 views

Checking if two WGS84 lines intersect in JavaScript

I am trying to work out given two GeoJSON lines (WGS84), if they intersect (i.e. cross one another). Let me give some pseudocode to illustrate: // Providing Line 1 = lon1, lat1 and Line 2 = lon2, ...
2
votes
0answers
71 views

QGIS 2.12.3 Crashes on buffering line vectors

I'm using QGIS 2.12.3 and I'm trying to create a buffer of 100 mt around a line vector using the Vector - Geoprocessing Buffer tool, but qgis crashes at every try. I've already checked that the RS of ...
2
votes
4answers
2k views

Finding center point of MULTILINESTRING using PostGIS?

How to find the center point of MULTILINESTRING, which lies on the multiline? I am using SQL in PostGIS