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)
-2
votes
1answer
65 views
How to find length of transmission line for all possible configurations between 9 villages?
My dissertation is on designing transmission line using ArcGIS between 9 villages of Uttarakhand.
How can I find the length of transmission line for all possible configurations between all the ...
1
vote
1answer
47 views
Why won't lines from GPX simplify/generalize/smooth?
I am working with GPX data. I imported them to ArcGIS by 'GPX to feature' and then I created lines from these points. I am trying to smooth (or simplify) the lines now, but the tools 'smooth line' and ...
0
votes
1answer
61 views
How can I create a line with three points with Python in QGIS?
I'm new to Python and I'm having some dificulties. I want to create a simple layer with a line in the console of QGIS with Python. How can I do that?
-1
votes
1answer
52 views
QGIS and Python - create line with multiple points in postgis
How can I create a line, with Python functions, with many points that are records in Postgis?
Thank you
0
votes
2answers
47 views
Creating a 3D line feature based on 3D point features
In ArcGIS, is it possible to create a 3D line feature by drawing a line that connects 3D point features?
0
votes
1answer
62 views
In QGIS can I show just the lines in a Postgis query? How can I do that?
I have three tables in Postgresql, each table with one layer of lines.
I want to show the path of an initial line to another final. Is it possible executing a SQL query?
Thanks
My three tables are ...
0
votes
1answer
60 views
Problems using v.split in SEXTANTE toolbox to split lines
I got this error：
Or don't click "open output file after running algorithm", but there is no new shapefile created on my desktop.
How to solve this problem and split lines at a specified distance？
...
3
votes
1answer
84 views
How to split line at a specified distance and getting coordinates of start and end points of each line segment？
I tried v.split in GRASS：
and my notebook ran a lot of time but showed this error：bad allocation, then I click "OK", and got nothing.
Are there other ways to split lines？and I hope to get 2 new ...
1
vote
1answer
49 views
How to Blink a line on a map similarly like a point blinking on map through lat lon points
how to blink a line on a map which is formed by lat lon points through linestring from database the points(lat,lon) comes which is stored in form of MultiLineString.
similarly like how a point ...
0
votes
0answers
30 views
How to determine if a line is within a polygon or if it exceeds the polygon boundaries?
So I have a polygon layer and a line layer and a point layer...
Each line goes to the centroid of 1 polygon, some of those lines come from within the same polygon, some come from outside of that ...
0
votes
1answer
41 views
How to set the length of a line using openlayers
I'm trying edit a polygon by changing the length of some lines by code. Found this method to calculate based on the bearing.
But I didn't find anything on how to calculate the bearing, before I start ...
2
votes
1answer
69 views
How does Flow Mapper Plugin work?
I downloaded the Flowmapper plugin for Qgis and I can't seem to find any information on how it is supposed to work...
Also the text seems to cut-off and not fully showing for the input fields so I'm ...
2
votes
1answer
55 views
Shorten polylines a given distance
I have a polyline dataset with lines of different lengths. I want to shorten all polylines the same distance on both ends (e.g. 10m each side). Is there a tool or script available that could help me ...
3
votes
1answer
197 views
How do I find vector line bearing in QGIS or GRASS?
How can one extract the bearings from a set of lines in a vector file?
I'm trying to find the bearings of several straight vector line segments (simplified contour lines, actually) and can't figure ...
4
votes
3answers
212 views
Convert multiple lines into single line
I've no idea if this is basic or what but I have this data that contains multiple lines (forming a polygon shape). I want to convert those lines (multiple - each with a start and end point) to a ...
