All Questions
42
questions
5
votes
1
answer
228
views
Making buffer around crossing point on lines intersection in QGIS
I have two line layers A and B. I need to create a point at the intersection of these layers (which is not a science using "Line intersection").
Is there a possibility to draw a new one on ...
- 197
0
votes
0
answers
67
views
Identifying near continuous line features in a broken network
I have a line dataset which contains thousands of records, the network isn't continuous and it is broken in many locations. The aim is to find potential routes which are continuous in long sections, ...
- 133
0
votes
0
answers
36
views
Calculate length lines within point buffer
I have more than 184000 clients. I made a point buffer layer for all of them.
Also, I have a line layer of roads.
I want to calculate the length of lines (roads) within each buffer with a notebook and ...
-1
votes
1
answer
88
views
Polyline FLAT Buffer: How to create coverage beyond ends of line? (VISUAL REQUEST)
To clarify, if we consider the output of a buffer when choosing FLAT or ROUND.
I'm wondering if there is a way to extend the area coverage of the FLAT type beyond the ends of the line with a similar (...
- 307
2
votes
1
answer
147
views
How to divide polygon into equal length but irregular widths based on depth and coastline
I've been having issues with dividing my polygon (coastline to 300ft depth contour around Oahu) on ArcGIS Pro 3.1.0. I need to create 100 equal-length polygons along the coastline, but the other side ...
7
votes
1
answer
465
views
Splitting line buffers into two separate polygons in QGIS
In QGIS, I have a layer of numerous vector lines that need to be buffered. Once they've been buffered, I'd like to have those polygons split into two, with the original line being the segment that ...
1
vote
0
answers
52
views
Calculating the line with which the buffer was created
My problem is that I have a buffer with a 800m diameter but need to have a 1km diameter.
I don't have the line-feature on which the buffer was created ... so I want to recreate the line by doing the ...
- 11
1
vote
0
answers
69
views
how to overlap two lines in QGIS 3.10
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I am working on QGIS 3.10 and would like to overlap two lines in order to use select by location tool. I tried all the option in this tool and get just a few data selected....
- 321
1
vote
1
answer
93
views
Records density along river network [closed]
This is a quite a complicated problem for me. I'm working with bird records, trying to figure out the eventual density of river bird species along rivers. I've managed to create a layer of records of ...
- 229
2
votes
2
answers
492
views
Buffer around lines with varying width in between
My questions is about creating an elongated buffer around various lines and these buffers should run right in the middle of two parallel lines. The problem is that the lines do not have an equal width ...
- 615
1
vote
0
answers
49
views
QGIS buffer does not work on few features in the same multiline layer
I am trying to use QGIS buffer to do buffering around a MultiLine layer. While the command generally works well, I can not get a buffer for few features in the same layer. I wonder what causes the ...
0
votes
0
answers
32
views
Buffer around lines with rules or expressions
I need to create buffers around a layer of lines that represent infrastructures and they are symbolized according to the type (roads, railway, waterway and electric cables). Is there any way to create ...
- 51
1
vote
0
answers
181
views
QGIS: Creating a point at a set distance up/downstream from another point (dams or obstructions) on a line object (river)
I have a data set where I have shapefiles for the watercourses in a drainage basin (line/linestring) and locations of dams and other obstructions along them (points). I would like to create a new ...
- 11
2
votes
0
answers
67
views
Comparing buffer area and total EEZ areas
I'm currently trying to perform an analysis on a number of points and their EEZ regions in QGIS (see my earlier question here).
Here's an impression of what I've done so far:
In dark red, I've ...
- 375
1
vote
1
answer
64
views
Buffer wrong generation
I have a polyline projected in WGS_1984_UTM_Zone_21S:
u'MULTILINESTRING ((421451.00299999956 6350629.8709000004, 421439.96719999984 6350607.6084000003, 421428.77199999988 6350605.3015999999, 421423....
