Questions tagged [point]
A geometric element defined by a pair of x,y coordinates.
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Extracting rasters multi-value to points
I have a point shapefile and 90000 raster files with precipitation data. For each point, I tried extracting precipitation data from the rasters to points (gauge stations) using ArcGIS model builder, ...
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QGIS find center point amidst a multitude of points located around
I have the problem like you see below:
I need just one point. Is there any way of generating the layer, which could contain only one point?
A similar solution I found is here:
Group nearby points and ...
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Geometry calculation in ArcMap
I am using ArcMap 10.8.
I have many point (i.e. off-scale) bridges for which it is necessary to calculate the strike azimuth of the symbol.
How can I do this?
I know about the "line bearing" ...
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mviewer/OpenLayers: Create proportional circles from the centroids of each polygon in a layer
I have created a mviewer map. This one is based on OpenLayers 7.1.
I created a map from a point layer added as WFS from my GeoServer. This layer shows the population using proportional circles.
The ...
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How can I make equal-sized shapefiles between four points in QGIS 3.22?
I have four boundary points around a plot area that I measured with an RTK unit, and I need to create a shapefile that has 13 equally-sized plots within those points. I am in the EPSG:32614 projection,...
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PyQGIS update field in point layer from intersecting polygon
I have a large dataset of points and polygons layers.
My purpose is to update a field from each point with the id of the surrounding polygon.
It was possible to do it manually, using the field ...
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How to start fid at a specific number
In QGIS Is there a way to change the fid field in my point layer from starting at 1 to start at 101?
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Identifying if line has moved to other side of point feature in QGIS
Our State Government is adjusting the property boundaries across our state to improve accuracy and I am preparing to adjust other datasets that will be affected i.e. shire assets/feature classes that ...
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Checking overlapping points from different layers in QGIS
I have a map with many layers, each one of them showing multiple points for different cities. For some locations, having the same lat and long data, these points are overlapping, being on top of each ...
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Edge correction for density estimation and point pattern analysis by R [closed]
I have point data and coordinates for study area. By using R, I need to investigate:
Density of data by using kernel method (quartic kernel).
Choose the best bandwidth by using Mean Square Error (MSE)...
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Setting the initial point of a line
I've been working on a project that consists in plotting points, which are not georeferenced, by their odometric position on a line, which is georeferenced. Eg.: Point 1 is 325 meter away from the ...
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Combine a point dataset with multi-polygon dataset
Using QGIS, I need to combine a point dataset with an associated multi-polygon dataset, and clip away any of the polygons which do not have an associated point, please see image attached. The point ...
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Creating straight line that starts from the point with the given length and also rotates around the point in QGIS
I want to create a straight line that starts from the point with the given length. And also it rotates around the point.
I have a point data of cctvs:
And I want to create a line with the given ...
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Coordinate reference system for NOAA ENCs
I am very new to QGIS as I'm having to migrate my work here from Google Earth in the wake of NOAA discontinuing their RNC files. All I need to do on QGIS is plot series of points 1 nm apart along a ...
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Categorising data points along transect using QGIS
I have data on the latitude and longitude of several locations in Europe (blue). So far I have been able to read this data into QGIS but not more. I would like to plot a transect (red) and then ...
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Displaying labels with a recursive filter in QGIS
I display the labels of a point layer (layer "q").
With a command found on the site, I know how to filter the labels if they intersect an object from another layer (layer "p1").
On ...
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Error code 3 while exporting a CSV table to drive in GEE
I have two problems: basically I need to export the value of band 2 of the LANDSAT/LC08/C02/T1_L2 product for a total of 1500 random points.
The first problem is that after 5h of running time I get ...
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Making points appear on top of lines in QGIS
Lines are showing on top of points when I want them to show behind. Please see picture for reference.
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Extracting Pixel values and exporting it as a CSV file - GEE Python API (Google Colab)
I was trying to extract the pixel values and download them as a CSV and I came across this tutorial.
I am using Google Colab instead of Jupiter Notebook.
I did the following:
Using the "Draw a ...
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Calculate the distance to the sea of several points in ArcMap 10.8
I am a ArcMap user. I have a layer of points representing weather stations located inside an island. In turn, I have another layer (polygon) that represents the boundary of the island. The points ...
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QGIS: How do I mirror a vector layer along a curve
I want to mirror points alonge a curved line in QGIS. The points should exchange the positions.
My idea was to calculate the "shortest line between features". After that doing a "line ...
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QGIS - align labels of point layer perpendicular to course of polyline
Is it possible to align the lable text of point layers perpendicular to the course of a polyline?
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How to put the 3D objects over the points in ArcGIS Pro
I have a point group containing a field named "Type" and 3D objects with the same type. I would like to place these 3D objects on top of points with the same type automatically in ArcGIS Pro....
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Shapefile not Z-enabled although the environment is Z-enabled in ArcPy
My attempt is to view raster values in the command window. The follwing code is thought to do this by converting the raster to a point feature file and by successively scanning the values at the ...
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Moving Point features to other Point features
I have two point feature classes, and need to move the points of one feature class to match that of the other feature class. Normally, I would just do them by hand, using the move tool but the classes ...
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Spatial Join Point within Polygon Python
My final project is to improve Waze with AI.
In order to do that I need to join 2 datasets.
1 - jams - linestrings that I convert to polygons using buffer
2 - alerts by user - points
Both are in the ...
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Move points perpendicular a line [duplicate]
I have a points shapefile and a lines shapefile. The points are not exactly on the line and I would like to move them so that they fall exactly on the nearest line. How can I do this?
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Give points attribute based on unique polygon
I have a problem that I can not solve. I've tried to find a solution in this forum, but with no sucess.
I have one layer with points and one layer with polygons. The point layer have information ...
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Display points on identical location from multiple layers with an offset
I have several layers containging points holding information. Some of them are at the exact same locationg (as they originated from the same file, describing varous categories at the same location).
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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 ...
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Calculating distance between two closest points on graph in QGIS
I have a graph layer and a point layer. The points are snapped to the graph. I want to get the distance between the closest points on the graph
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Summing values from points of one layer within fixed distance to points of another layer [closed]
I'm working with QGIS 3.22. I have two layers of points (layers A and B), and I know how many points of layer B are within a fixed distance from each point of layer A.
I updated a field of layer A ...
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Filtering which points to display using expressions in QGIS
I have a load of points loaded in as a CSV file. I want to show only certain points based on their name, e.g. only value1, value4 and value8, the field name is "Drilled ID".
I have gone to ...
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Create raster with angles between single point and all raster pixels in QGIS [duplicate]
I would like to create a raster in which the cell values contain the angle between that cell and a single vector point. It would be as though a line were projected between the cell and the point, and ...
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Categorized symbology with multiple variables (or nested categorization) in QGIS
I have a CSV spreadsheet containing thousands of rows, each corresponding to a georeferenced record of a lizard species. The dataset looks like the following table:
record sex age color ...
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QGIS: Create rectangular grid from point grid
I would like to create a grid of rectangles from this grid of points using QGIS 3.16:
I want the rectangles to be 8km by 8km in size. My points are 8km apart. I tried using the Rectangles, ovals, ...
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Creating virtual stop points along a route shapefile and locate them between stop points in an accompanied stops shapefile to follow their sequence
I'm working on my Ph.D. research and I hope that you can help me with my problem.
I have GPS tracking data for minibus taxis in two shapefiles, one for taxi trips and the other for the stops of the ...
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Randomly offset duplicate points along linestring X meters using PostGIS
The query below selects all duplicate points on a line, which overlay one another, then randomly assigns each point location within a certain radius. The last step assigns each point back on what I ...
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Creating lines between points with certain attributes using QGIS
I have a layer with the coordinates of animals from a field experiment. Apart from other attributes the layer also contains the animals' unique ID and a timestamp. I want to know the travelled ...
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Feature Selection for Geospatial Vector Data Classification
The problem I am exploring right now is a binary classification problem about classifying road intersections into roundabouts or not roundabouts. The available input data consists of the GPS latitude /...
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Selecting points based on random index location from a filtered GeoDataframe in Python?
I have a large point vector file (and many others like it), where each point has a integer value in the column "DN". However, I only need 6 points per DN and want them to be selected ...
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Getting a surface from a list of points using geopandas or shapely
Given a set of points I would like to have the boundary given by the outtermost points of the set. For example: if I have 11 points, 10 being on the perimeter of a circle (each one at 2*pi/10 radians) ...
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Calculate azimuth between points
I have a points from file in CSV format containing the following fields:
I want after ordering the points based on collecting time, to calculate the direction in degrees between the points.
From ...
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Dividing point layer according to boundary layer in QGIS
I have two layers:
All the post offices in the city (point layer)
Division of the city into boundaries according to their neighbourhood council (MultiPolygon layer)
How do I split the first layer ...
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Create points along line at alternating sides using QGIS
I want to create points along a polyline.
The distance between each „nearest-to-point“ position on the line and the shortest distance of each point to the line should be 2 parameters that can be set ...
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Create a gradient within a polygon based on the amount of point data in each area
I have species presence points that are scattered throughout a watershed polygon, and I am trying to see how many points are within each subbasin of that watershed and then see if I can create a ...
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Populating attribute table with the ID of the nearest point in QGIS
I have two point layers, let's say one is 'endpoints' and another layer is 'nodes'.
The "endpoints" layer attribute table has a field called "nearest_node", I want to populate it ...
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Identifying international crossings in OSM
I would like to identify international crossings between Italy and Austria in OSM, regardless the type of road.
Is there a way to identify such points using QuickOSM or should I do it manually, using ...
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Representing points as polygons from Feflow data in QGIS
I have several Feflow files that are displayed as points in QGIS. I would like to display points that have the same value scale as a polygon (F Value in the attribute table). Is this possible?
Is ...
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Sample points from each feature in a featurecollection (Google Earth Engine)
I created a grid (featurecollection containing various rectangular features) by coveringGrid function, and now I want to sample 10 points within a feature, and for every feature in this ...
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