Questions tagged [point]
A geometric element defined by a pair of x,y coordinates.
2,246
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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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1
answer
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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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Create 3D points along with 3D building in ArcGIS Pro [closed]
How to display 3D points through ArcPy nearby 3D buildings?
I already have the code of 3D scatter points and I am creating the 3D buildings with the footprint. all I want to do is merge both of them ...
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1
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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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2
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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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Automatically generate midline - GIS [closed]
How can I create a midline of a point group automatically? (Using Python)
Example:
dots in purple
center line in red
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16
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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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42
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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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Check adjacency of lines in a planar coordinate system given ordering, start point northing and easting, and azimuth [closed]
I am suggesting an algorithm to check that the user-entered input order of a set of lines as defined by a point and azimuth is correct and looking for feedback on the approach. I do not need 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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3
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80
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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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2
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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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Classification Algorithms for Geospatial Vector Data
I am new to the world of Geospatial Analysis.
As such, I am interested in Machine Learning / Deep Learning techniques for classifying geospatial vector data specifically (as opposed to raster data). I'...
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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) ...
4
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1
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152
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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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1
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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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1
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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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Rule-based parent child symbol layer view in QGIS
I have QGIS 3.22.15 and I have a point layer with three fields: "FID", "UNIT", "PARENT". Each "UNIT" is associated with the "PARENT" field, thus ...
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Creating Bounding Box in QGIS [closed]
I have four coordinates: north, south, east and west. How can I automatically create a bounding box in my shapefile? Can I do it through Python?
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Geotools unable to transform EPSG:5359 to EPSG:4326 , returns NAN for coordinates
I am using geotools to transform a set of point in chile EPSG:5359 to world EPSG:4326
I am using below code
transform("6884327.77", "447076.76");
static Coordinate transform(...
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1
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218
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Finding all latitude and longitudes within X km range from input location using Python
I've close to 4000 location data(latitude and longitude). The task is to find all location points(from the above location data) within the X km range from the input location.
Example
input_latitude = ...
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Is there any way to identify what does the value in point cloud text file represent without contacting the one who generated it?
I have a point cloud text file that I obtained from the internet and it contain 6 type of value. I assume the first three value represent xyz values but I do not know about what the other three ...
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1
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306
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When moving label other labels disappear in QGIS
I have a set of points with labels set to lat and long generated using the
"Lat Lon Tools" plugin.
I want to move the labels using the move label tool.
When I move a label, the other labels ...
5
votes
1
answer
92
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How to label a point layer with the percentage of points within another polygon layer?
I would like to find a method using Geometry generator to label a point layer with the percentage of points inside another polygons layer.
I'm working on implementing a solution based on the COUNT and ...
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28
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Add raster and vector layer values to millions of points (QGIS)
I need to create a CSV file with the values of 10 rasters (30m pixel resolution) and 5 polygon layers. Each row of the CSV should represent one pixel of the rasters and the columns should contain the ...
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Calculate a correction factor between two sets of data
I'm a data science student and have a problem with harvesting data.There are two sets of geographic data (stored as points) that stores the yield of a soybeans harvest in the same field, they are from ...
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49
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Flow maps without using virtual layers for displaying line matrix
I found this great flow map visualisation that I have been following: Flowmap - No plugins
Unfortunately the dataset I am currently working with is far too heavy for the virtual layers to handle, so ...
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28
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Distance between selected points in order
I am using ArcGIS Pro and need to find the distance between selected points by time & day. I have a large file that contains information about the time, date and location of points. I would like ...
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3
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Find areas distant from any points
I want to draw all areas that are far enough away from any single point of a layer, in this case they are Openstreetmap building=yes tags and I want to calculate the areas that are completely clear of ...
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1
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Categorized shapes for one attribute and categorized colour for another attribute
I can find similar questions but not the same and I'm struggling to figure it out.
I have species data for an area. The attributes I'm interested in displaying are the Species Group and the Species ...
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Using point features to split lines
I have several point feature classes I would like to use to split a line feature class. I am trying to determine whether there's a way to split the lines in the existing feature class (and not create ...
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Creating square polygon around center of the point using Python
How do I create a square polygon using center of the point (lat/lon) 25 kilometers (KM) by sides?
I am not looking for a radius i.e. buffer. Here I am creating edges of 25 KM from the center point ...
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