Questions tagged [point-creation]
Process of creating geometric point features
39
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0
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0
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45
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Creating equidistant points along polyline with multiple objects
I want to create equidistant points along a polyline layer that consists of multiple objects. The problem using the "point along geometry" tool in the QGIS processing toolbox is that every ...
- 21
3
votes
1
answer
46
views
Plotting transect line with equally spaced points and get the coordinates in QGIS
In QGIS I am trying to plot a transect line. For this I would like to place points every 500m along a line and get the coordinates of each point, but have not managed to achieve this unfortunately.
Is ...
- 31
3
votes
1
answer
97
views
Turning table with lat and long columns into point layer in QGIS
I have a table as a layer in QGIS. It includes two columns: "Lat" and "Long".
I would like to use these as geometry columns.
How would I do this without saving and reloading a ...
6
votes
3
answers
414
views
Generating points along line with specifying the origin of point generation in QGIS
I have been trying to generate points along a line with a distance of 500m. We can do this in several ways using tools like "Points along Geometry". However, my problem is that I do not know ...
- 61
4
votes
1
answer
112
views
Getting the vertices of UTM grid in PostGIS
I've downloaded from the official repository the UTM 5x5 km grid of Spain and uploaded it to a PostgreSQL/PostGIS database (vv. 14 & 3.1.4).
I need to obtain the coordinates of every cell vertices,...
- 3,180
5
votes
1
answer
186
views
Using multiple XY fields for geometry definition in point layer in QGIS
In QGIS 3.26.3 Buenos Ares I have a set of drill hole point data with XY fields for the planned drill hole location and a second set of fields for the surveyed XY location after drilling.
I want to ...
- 51
3
votes
2
answers
653
views
Generating points along the line at equal intervals excluding vertices in QGIS
I want to generate points along a line at equal intervals but the final point layer should not contain the vertices points. It should only contain points at specified intervals.
Tools in QGIS such as &...
- 31
4
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3
answers
209
views
Adding points beside existing point feature in QGIS
Is there any solution to add every point of a point feature 4 additional points in all geographic directions in a specified distance?
- 59
4
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1
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192
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Geting midpoint of MultiLine in QGIS
I have a line(multiline) layer in QGIS 3.22. I need to place a point in the middle.
I've tried using the algorithms: "interpolate point on line" and "points along geometry", by ...
- 103
3
votes
1
answer
233
views
Adding point feature with Geometry by Expression in QGIS
I am trying to use "Geometry by Expression" to add a point feature in a layer but I am getting unexpected results.
I added the expression make_point(0,0) but it just takes all the existing ...
- 31
0
votes
1
answer
229
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Making middle point going on curve lines in QGIS
I've these lines so when i want to point the middle by going to Vector > Geometry Tools > Centroid the point goes on the Straight line only, but when i have lines with curves the point doesn't ...
4
votes
1
answer
3k
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Interpolating series of points between two locations using Python [closed]
Let's say we have two addresses that are provided. I grabbed two random ones from the web below:
# Google headquarters:
google_lat = 37.422131
google_lon = -122.084801
# Apple headquarters
apple_lat =...
- 151
2
votes
1
answer
441
views
Getting coordinates from random points in polygon and sync it with shapefile in QGIS
In QGIS I have a shapefile that contains a polygon of administrative boundaries in a country. I need to add six random points inside the polygon.
Can i get the coordinates from random points feature ...
6
votes
1
answer
650
views
Generating x, y, coordinates within polygon/polyline with certain interval in QGIS
I need all the x- and y-coordinates with a interval of 500 meters that fit inside a polygon/polyline.
For example I want to generate a CSV file that looks like this:
x, y,
10000, 30000
10500, 30000
...
- 73
6
votes
2
answers
755
views
Adding points with coordinates delimited by commas from CSV file in QGIS Python Console
I can't figure out how to add point from a CSV file with the Python Console.
This is my CSV file:
UTM32_E;UTM32_N
562834,932;8762874,054
560758,523;8762624,904
562483,074;8762760,832
562131,643;...
- 155
8
votes
4
answers
692
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Generating dangle point for polyline in QGIS
How do I generate the dangle points (into shapefile or something) (blue dots in picture below) of any polyline in QGIS? These are not start/end vertices.
- 910
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1
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291
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OSM and imported points do not match in QGIS
I am trying to insert new coordinate system to the QGIS ( ferom excel comma delimited file), but unfortunately the coordinates do not overlap the correct point in OSM inside.
Below there are ...
2
votes
1
answer
189
views
Calculating mean distribution of point locations using field values in QGIS
I have a layer of point locations distributed country-wide. I would like to create a new point layer that shows the mean or center of mass of the points, but grouped based on the value of a field, ...
- 23
7
votes
2
answers
646
views
Creating set number of regularly spaced points inside of polygon in QGIS
My application for this would be for making maps with pre-established plot points for cruising a stand of timber, but I could see this being used for other applications.
I am a little surprised that ...
- 71
3
votes
2
answers
485
views
Randomly generating points using weights from raster in QGIS
I need to randomly generate 10K points throughout my region of interest, but I need to weight the point selection by a set of probability weights, stored as a raster - such that higher probability ...
- 355
4
votes
1
answer
167
views
Creating centroid on curved surface in QGIS
I am using QGIS 3.16.13 to build a map in which I have 98 adjacent polygons that represent areas of ocean around the coastline of an island. I want to have a centroid inside of each polygon, even ...
- 53
3
votes
1
answer
185
views
Creating different numbers of random points inside polygons using PyQGIS
I am developing a plugin using PyQGIS and PyQt5. I am calling qgis:randompointsinsidepolygons, where I am trying to give field input at VALUE parameter. It will take a variable number of points for ...
- 441
6
votes
1
answer
2k
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How does GeoPandas' representative_point() work?
I need to compute points that, unlike centroids, are assured to be within a geometry. GeoPandas offers the method geopandas.GeoDataFrame.representative_point(), but I cannot find how it works. ...
- 257
1
vote
1
answer
608
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Converting lines to points in Google Earth Engine
I am working to extract surface reflectance from the image collection, and I have only line geometry representing the central line of the river. I would like to convert the line into points and each ...
- 11
3
votes
1
answer
306
views
Generating parallel points along with lines or outline of polygon
In QGIS using the Geometry generator, how can we generate the square points within a polygon (e.g. built-up layer) that parallel with other features (e.g. road layer) like in the map below?
- 55
6
votes
2
answers
1k
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Creating specific amount of points along line in QGIS
I would like to create a specific amount of points along a line in QGIS. The lines are in different lengths, but I want them with a maximum of 50 points (divide by 50). The tools i've found in QGIS ...
- 8,254
9
votes
1
answer
2k
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Creating point on surface in QGIS
As far as I can tell, the option to "Create point on surface for each part" in the QGIS Centroid tool is not returning the correct geometry when activated in QGIS (version 3.8.1-Zanzibar/...
- 4,872
4
votes
3
answers
1k
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Extracting points with distance tolerance along line in QGIS
How I can delete points along a line, with a distance tolerance?
As you can see in the figure, the points near the line should stay, the points between the lines should be deleted.
- 121
5
votes
3
answers
2k
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Creating feature with empty geometry using PyQGIS
I would like to create a model point dataset in QGIS 3.0.3 with Python in the QGIS Python Console to do some testing. Specifically, I want to create a point dataset that has a feature with an empty ...
- 967
7
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1
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305
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Halftone effect: gridded points inside polygon with QGIS Geometry Generator
I am trying to create smooth looking polygons by gridded points in QGIS (2.18.16), with a fading effect towards the boundary of the polygons (halftone effect).
By using the 'fillGrid' function from @...
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8
votes
4
answers
5k
views
Creating mid point from line layer in QGIS
In QGIS I am trying to create a new point layer based on the mid point of a line layer (and keep all the feature attributes in the table).
For example, one line feature becomes one point, located on ...
- 71
6
votes
3
answers
3k
views
Getting centroids for multiple lines in QGIS
Is there a possibility to get the centroid of each line?
When using Vector > Analysis Tools > Mean Coordinates I always get a centroid of the whole lines. What I need is the centroid of each ...
- 671
3
votes
1
answer
4k
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Adding CSV layer in PyQGIS
I am trying to load a series of CSV files as vectors in PyQGIS. I run this code to try to get the first one:
uri = 'file://D:/Saved Stuff/gulags/1.40.csv?delimiter=;&yField=y&xField=x'
layer = ...
- 85
21
votes
7
answers
30k
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Retrieving start and end points for each line in line shapefile in ArcGIS Desktop or QGIS [closed]
I have a vector(polyline) shapefile and I need to retrieve each line´s start and end points(nodes) and create a shapefile with these points. Then I need to add to the polyline´s attribute table the ...
- 211
5
votes
1
answer
3k
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Finding mean coordinates of cluster of points from point layer in QGIS
I have a set of coordinate points. The points are distributed in such a way that some points are clustered around a specific area. There is an option to find out mean coordinates(s) of the whole point ...
- 129
26
votes
7
answers
62k
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Creating points in specified distance along line using QGIS
I want to use QGIS creating points along the line, but in specified distance. I found two GRASS tools in SEXTANTE Toolbox：
v.to.points
v.segment
I tried v.to.points, setting the maximum distance ...
- 1,545
12
votes
8
answers
17k
views
Finding middle point (midpoint) of line in QGIS
How can I locate the coordinates of the middle point (midpoint) of a line feature in QGIS?
- 121
4
votes
2
answers
738
views
Creating matrix of points inside polygon using QGIS
How do I create a matrix of points (e.g. 3.5 x 0.5 meters), with a defined orientation, inside a polygon?
I have to plan the arrangement of plants in a grove in order to plan an irrigation system.
- 51
88
votes
13
answers
235k
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Creating point features with exact coordinates in QGIS
How do I create point features with exact (manually entered) coordinates in QGIS?
I get precise GPS coordinates from a survey team which I need to add to a point layer. What I want: add point, type in ...
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