Questions tagged [point]

A geometric element defined by a pair of x,y coordinates.

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2answers
47 views

QGIS: Randomly generate points using weights from raster

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 ...
2
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1answer
33 views

Creating lines (not just one) from points GPS [duplicate]

I have exported GPS points into QGIS. I want a line that shows the route between the points based on the date. I used the points to path tool and it worked. The line shows the route in time. But in ...
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2answers
48 views

Counting features of point layer that are laying within polygon layer using QGIS

I have a 'Layer 1' that represents geographical areas. And another 'Layer 2' contains some location-based information. I want to count/aggregate the tweets per geographical using QGIS. For example, in ...
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1answer
30 views

Google Earth Engine extract values on MODIS data at point coordinates

I'm trying to extract from the MODIS collection MOD11A1006 band "LST_Day_1km" at one point coordinates the value of each image in the collection together with the date, and hour of the image ...
1
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1answer
41 views

Create density map with grid

I want to create a map as shown in the image, where every grid cell shows the number of points (from a point shape layer) that are within a grid cell. The number of points in a grid cell shall be ...
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0answers
9 views

Google my maps - how to add points/markers to an existing polygin layer

I want to add points to an existing layer in google my maps which has a number of polygon boundaries. I wondered if these points can be added manually to the layer in google my maps? I would be ...
0
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1answer
30 views

Max of count does not give me the result I need

I need to display the max of count for this query. I tried a nested way but I could not get it to return the centroid of that cell. Here flickr_edin table data consists of points and grid100m table ...
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2answers
53 views

Block labels from another layer to cover points

I have these road map labels generated from a table and they are overlapping with my points from another table or layer. How do I stop that from happening? I want to see the points clearly. If I ...
5
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2answers
85 views

Finding mean distance between cluster center and points in cluster in QGIS

I have done the following in QGIS: I used the integrated k-means clustering tool to cluster around 160k data points into 50 clusters. Using the mean coordinate tool (Vector analysis > Mean ...
1
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1answer
31 views

Aggregating point geometries and creating envelope using Virtual layer in QGIS

I am trying to group points using a Virtual layer and create a rectangle covering an extents but I cannot get it to return the geometry. Current code is this: SELECT VP.Page, st_envelope(...
5
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2answers
98 views

Styling popup with two separate styles at once in Leaflet

I have the point layer as you can see below: where the semicircles are fine but points not necessarily. I would like to customize these points as well. The problem is, that I can't find a good option ...
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0answers
22 views

Combine nearby points into single point with average location in ArcGIS Pro

I've added GPS waypoints to my ArcGIS Pro map using the GPX to Feature conversion. However, some points are clearly "duplicates" of the same location because they are so close together. (...
4
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1answer
56 views

Variable nested inside another variable not displayed properly in popup in Leaflet

I would like to set my popup content. Some of the information will be condition-based. I tried the following options: onEachFeature: function (pointFeature, layer) { var stream = function(liveStr){...
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0answers
34 views

Multi-year analysis of points at the same location

I want to do a multi-year analysis in QGIS. One of my clients would like a map indicating the overall mean for his Yield Data going over 10 years. I have my 10 years points separate. How do I combine ...
5
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2answers
114 views

Preventing labels from covering symbols in QGIS 3

In a single point dataset is it possible to get the labels to stop covering the symbols and be placed in a position that has white space automatically (i.e. without using data defined xy positions)? ...
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0answers
10 views

Autogenerating waypoints to GPX file with QGIS to find coordinates along route

Edit: I was able to figure out how to get the waypoints, I now need help with getting the coordinates for those waypoints in a CSV or JSON format. I am trying to get geo coordinates for every 0.1 km ...
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0answers
35 views

What techniques do you use to "stack" multiple symbols around a point? [duplicate]

I'm working on a map for a trail system. There is a "Camp Store" right next to a "Parking Lot" and I want to show symbols for both without them overlapping each other. One idea is ...
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0answers
29 views

Points displacement function in QGIS does not show in layer properties box

QGIS has a points displacement renderer (featured in section 15.1.3.1.17 at qgis.org) in the layer properties box that I need to use. However, QGIS does not show me the option of the points ...
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0answers
20 views

Adding point layer information (point id) after "Split Lines at Points" to the newly split line layer

I have a point layer for a group of roads and a line layer (have directions) for the roads. I need to calculate the distance between two adjacent points on the line layer hence I was thinking of ...
14
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2answers
396 views

Creating equally split buffers between points in QGIS

I want to create buffers for every health facility, but they end up overlapping. How can I create buffers that split equally between the distance of 2 health facilities? Example of the result wanted ...
2
votes
1answer
96 views

Setting attribute of point if it matches point from another layer in QGIS

I have two layers of points: The first layer contains points which have an attribute called "svf" with values between 0 and 1 The second layer contains a subset (in terms of location) of ...
0
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1answer
24 views

Geographic Calculations Across Layers

I have a layer with thousands of points and a different layer with census tracts. I want to determine the average value of each point per census tract. I have tried merging the layers together but ...
2
votes
1answer
69 views

Points don't show up on the map after importing CSV file in QGIS

In QGIS 3.16.12 I have previously inserted survey location points by adding a delimited text layer (clicking the correct buttons and setting x and y as long and lat). Though now, when uploading the ...
1
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1answer
48 views

Generating random points in polygons to simulate population distribution

I have a spatialpolygondataframe that represents census tracts. I want to simulate different scenarios of population density or distribution to test a model. To do this, I want to generate random ...
4
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2answers
235 views

Combining point and polygons layers using QGIS

I'm currently trying to compare species sample points vs their actual geographic range. I have: a points layer with species names and each species has multiple corresponding points/records a polygon ...
0
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1answer
23 views

Point layer data frequency within a raster layer

I need to determine which land cover has the highest/lowest number of points from a delegate point layer. I have the land cover classified and a separate key (i.e. 1-saltwater) -- How can I find how ...
1
vote
1answer
60 views

Sampling raster data around point set in QGIS

I have the following problem: I have a set of 27 "destinations" which I have selected manually and saved as a POINT layer. I have loaded several raster data layers into my project (with ...
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0answers
42 views

Calculating distance between points in QGIS

I have a CSV file with a bird track and multiple points with exact coordinates as well as date and time. My CSV files are divided by days. Here is an image of attribute table: How can I calculate the ...
1
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1answer
31 views

Find First And Last Intersection Points Between Lines

Let's consider these 2 feature classes below, both of them are simple single-part lines. I need to find a reliable way to get the first and last intersection points between them (the green and yellow ...
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0answers
36 views

Calculating minimum distance between points in QGIS

I hope to calculate the distance between each property in the Washington DC metropolitan area and the nearest metro station, and I am doing this for each month from 2000 to 2017. I use Distance Matrix ...
3
votes
3answers
82 views

Visualizing points with different colours based on field from polygon layer in QGIS

I am aiming to create a map showing species location records as points. I need to make the points different colours based on land type which is a polygon layer. So I want my species points to be a ...
1
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3answers
63 views

Output point feature created with ModelBuilder (ArcGIS Pro) doesn't display on map

I have been tasked with creating a model on ArcGIS Pro that allows you to create a point feature and input XY coordinates (British National Grid) from ModelBuilder. Please note I don't want to use a ....
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0answers
39 views

Dividing layer with tracks by individual days in QGIS

I have a CSV file that includes about 150 dates containing tracks for a particular bird. I successfully added it as a layer in QGIS. My question is how can I divide all the dates into separate days?
5
votes
1answer
45 views

Rotating a set of points with an angle with rotation matrix: why is result "distorted"

What might be going wrong with my rotation of set of points as result look distorted? I have a set of points (X,Y). I calculate the mean (= "center of gravity") of them and subtract it from ...
1
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0answers
22 views

Selecting only one feature from layer and making others to disappear in QGIS [duplicate]

I have a map with a series of points representing stores showing up. All these stores are from the same .shp-file and thus on the same layer in QGIS. What i need to do is be able to select only one of ...
2
votes
1answer
66 views

After creating layer by means of PyQGIS it does not show up on the map

I made a script in PyQGIS to create a layer but the layer does not show up on the map. Can someone help me? from qgis.PyQt.QtCore import QVariant vl = QgsVectorLayer("Point", "...
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0answers
34 views

Setting start id and end id to attribute of polyline from ids of point layer using QGIS [duplicate]

I assigned automatic nodes to the start and end points of the path I digitized. I want to add the start id and end id of the points to the attribute table of the road layer so that I can use the ...
4
votes
2answers
84 views

Drawing lines between pair of two points with their coordinates in QGIS

I'm using QGIS 3.18. For my thesis I use coordinates of starting points and destination points. So far I uploaded these coordinates into my project which worked without any problems. The CSV-file ...
0
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0answers
35 views

Creating LineString geometry from Point geometries with Python's OSGEO/OGR library

Is it possible to create a LineString object with Python's osgeo/ogr library starting from multiple Point objects? For example, I know from the Python GDAL/OGR Cookbook that I can create a ...
1
vote
1answer
30 views

Point symbols auto-scaling in map with QGIS 3.2

My point symbols are auto scaling when zooming in and out. I have seen users ask how to do this and the answer seems to be changing the size measurement to map units, but I am in millimeters and it is ...
1
vote
1answer
42 views

Joining hub and spoke points by lines using Virtual Layer

I have two shape points as shown in image below. Point 1 represents the connectivity nodes (hub) Point 2 shows the address(spoke) How to connect each hub (connectivity nodes) to nearest spoke(...
3
votes
2answers
71 views

Splitting line with point layer in QGIS [duplicate]

With two layers, one multiline and one point, I need to split lines who intersect point layer. In example (image), the selected line is unique but I need 11 lines cut at point level. How can I do ...
1
vote
1answer
55 views

Using coordinates from mouse click for QgsPointXY when creating point using PyQGIS

I can not figure out how to input the coordinates through a mouse click instead of the code below. I am trying to create a temporary layer of a point from a mouse click. Everything seems to work ...
2
votes
1answer
34 views

Only retaining polygons that would intersect with a point but not taking point data

I want to see if a polygon contains a point data of interest (in this case an observation of grain yield), but I really don't care about the point data (grain yield), I just want the polygons that ...
2
votes
0answers
26 views

How to get equal size cells when using rasterize in QGIS on slanted points

I'm trying to get nice, centered cells on every point. I'm using the tool rasterize in QGIS. I have gotten the method to work with uniform point data, however, I am having more trouble with slanted ...
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0answers
24 views

Converting a .MIF file into .TAB retaining symbology of point features in QGIS

How to convert in QGIS a layer from MapInfo .MIF format to .TAB without loosing symbology? QGIS can't save symbology of point features when exporting a layer to .TAB format. (It can save symbology of ...
2
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0answers
24 views

Unable to load CSV as viewable features

Have tried loading a .CSV using Delimited Text tool. When it Loads up, it only loads as an attribute table with no spatial view. What am I doing wrong?
3
votes
1answer
77 views

How to create 3×3 pixel from one point in QGIS

I need 135 raster values of raster from 15 points. So, I want 3×3 pixels (9 raster values) from each point. To make them, I tried "Rasterize" to convert points as shown below. (In this ...
1
vote
1answer
45 views

Extract Max or Min Value from Point File Attribute and then Add XY Coordinate

I have created a Point dataset by using the Saga routine 'Convert Lines to Points'. This produces the following look and attribute table: Can anyone advise on how I can extract the maximum value from ...
0
votes
0answers
17 views

Shifting points in shapefile based on velocity and direction in raster layer using ArcGIS Pro

I have a point shapefile and I need to shift each point based on the velocity and direction of the raster cell of a corresponding shapefile. I cannot seem to find a tool in ArcGIS Pro that would ...

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