Questions tagged [point]

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

Filter by
Sorted by
Tagged with
1
vote
1answer
31 views

Attach features of lines to points

I am trying to calculate the cost of network to homes. In the image i have cable (brown line) between utility boxes(pink/blue points) and home feed (black dash) to the home. I know the cost for each ...
1
vote
0answers
36 views

Opening hyperlinks in a new tab from GeoJSON points when the link to the website is embeded in GeoJSON? [closed]

In the code below the point links are embeded in GeoJSON object places_geojson. How could we make the link to be opened in a new tab? I believe that this functionality need to be added in the ...
1
vote
1answer
32 views

Put the start and the end name of a point object into the layer of the line object that connects them? [duplicate]

I am new to QGIS. I am given two layers with point objects. In their attribute table each of this objects has a code (name) given previously to it by someone else. Then I import the lines from AutoCAD ...
1
vote
2answers
47 views

Removing both sets of duplicate points

I'm trying to create points on the edges of polygons. So far I have converted the polygons to lines, then exploded the lines, then ran the following code which plots a point in the middle of the ...
0
votes
0answers
54 views

Difference between grid and its centroid

Recently I was download GPCC gridded precipitation data. I plot them on Matlab and it gives me pixels. then I tried to plot them on the ArcMap and saw there are lots of points instead of pixels. What ...
0
votes
0answers
34 views

Assigning elevation to point shapefile based on point file using ArcGIS Desktop

Goal: Extract elevation data (Data B) based on given point file locations (Data A). Current problem: I have several sets of xyz data for large areas with a resolution of 1m. I converted those to ...
2
votes
1answer
164 views

Define custom projection in QGIS from some control points

I have six control points in a local mine grid which I want to use to define a custom projection in QGIS. The reference points are in GDA94 / MGA zone 50 (EPSG:28350) (https://spatialreference.org/ref/...
3
votes
2answers
80 views

Plotting point every x m2 in polygon using QGIS plugin

I'm trying to work out whether its possible to plot a point every so often within a polygon. For example, if I have a polygon thats 200x200m, perhaps I could plot a point at every meter squared ...
1
vote
0answers
23 views

Upload waypoints to OpenStreetMap

I want to upload waypoints recorded in the Maps.me App onto openstreetmap.org for further editing. Already tried: Export from Maps.me to .kml then conversion to .gpx with QGIS (second try with ...
1
vote
1answer
40 views

Delete overlapping points between two shapefiles QGIS

I have a point shapefile of all human settlements in South Africa (ranging from tiny hamlets to major cities). In another shapefile, I have point features as well, representing settlements located ...
0
votes
0answers
53 views

Adding break/vertex on a polyline from points

I have a polyline which consists of just one geometry. I have points which are evenly spaced (25m). How would I add these point vertices to the line so that the points will create one line segment/...
2
votes
0answers
19 views

Rasterize will output 0 as NODATA (QGIS)

I have a data range which includes 0 ex +3 to -4. I would like the rasterize to include my 0 data (create a pixel) and just exclude the NODATA (where there is no points)
1
vote
0answers
31 views

Rasterize right method for true value of point grid?

Is rasterize an interpolation or does it just burn in the "true" value of the point? I have a grided data that is evenly spaced and dense. I would like to just have a raster with the "real" value of ...
1
vote
0answers
43 views

Is points to route still available in QGIS 3.4?

I need to do the same thing as the post here as I need to create polylines based on given points with sequence attribute, and networks, but I cannot find the tool in toolbox: my point data and ...
2
votes
0answers
118 views

Not all points overlain on raster map are showing up with R

Using R, I loaded a raster file (.tif) and overlaid points on the map. I have 46 points but only about half of them appear on the map. I can't figure out why other points are not showing up. Here are ...
2
votes
0answers
48 views

Grouping points by attributes from field with possibly many values

I have a shapefile "cities" with one unique city_id for each city (geometry polygon, although not relevant here) : city_name ; city_id New-York ; 0001 Paris ; 0002 London ; 0003 And a ...
1
vote
0answers
41 views

Calculate road distances between points in QGIS 3.4?

I would like to calculate road distances between a series of points. I don't have any road network layer, I need to rely on OpenStreetMap. What is the best plugin available right now? And how ...
1
vote
0answers
48 views

Points group automatically when adding delimited text layer [duplicate]

I'm using QGIS 3.10. I am working with an Excel table with records having coordinates. I'm adding a delimited text layer, that is shown as points. However, records with the same coordinates are shown ...
1
vote
0answers
37 views

Why is my Nearest neighbour outputting higher value in a equally spaced grid?

So I got a point layer which is equally spaced 0,5x0,5. When I run the nearest neighbour and accounting for the extent so that the raster cells are centered, I get this result. I got maybe five areas ...
2
votes
0answers
130 views

Point grid in QGIS

I'm working on a project that needs me to map out a point grid for drilling work. The grid needs to fall within an already created polygon and be spaced 30x35meters. I was able to overlay a pointgrid ...
3
votes
2answers
154 views

Unfinished Layer with QGIS Contour Plugin

I am using QGIS 3.4.13 Madeira on Windows 10 I have an issue with the QGIS Contour Plugin. I have two point layers, they contain about 45'000 points in the exact same locations. The only differences ...
0
votes
0answers
17 views

Rescaling point distance values

I have a single line feature that I have converted into points that also contains an attribute field with each point distance value along the line. I’ve edited that line (e.g. made it longer, changed ...
1
vote
2answers
153 views

Converting from SHP into TXT file using PyQGIS [duplicate]

I'm working with many shp file point format with geometry attributes like this: But I need convert it into such format in textfile like below: Are there any ways to arrange my shapefiles format into ...
7
votes
7answers
406 views

Creating point at line end using QGIS

For an examination of a local power grid, I need to mark the transformation stations (substation) by simply create a point for each station. What I want to do is that QGIS creates a point at the end ...
2
votes
1answer
33 views

If I selected (highlight) a feature or points would I be able to color that feature as as it is being highlighted?

The points on purple and lightgreen area I want to maintain them reds. The points outside that I want to color them yellow not just the highlighted ones. How can I do that?
1
vote
2answers
491 views

Plotting points in QGIS using postcodes [closed]

I want to map a list of facilities around the UK by their Postcodes. I have no Eastings or Northings just postcodes. Is this possible via a Plugin or do I need coordinates. I am using QGIS Version 3....
1
vote
0answers
27 views

Combining orthophoto and DEM to export xyz-CSV

I have a georeferenced orthophoto and a DEM as tiff-file. For my further workflow I want to export x,y,z (x,y from the orthophoto and z from the DEM). I already managed to create a point layer and ...
1
vote
1answer
109 views

Rendering 3D points in QGIS

I am using 3D map view in QGIS 3.4 and I have point data. On layer properties I have enabled 3D Renderer but the billboard rendering to point option does not seem to be there. Does anyone know where ...
1
vote
1answer
46 views

Adding information to points [closed]

New to QGIS here. I'm trying to figure out how to add information to set points. I'm trying to use them as leads, so I can put lead name, address, phone number, whether they've been talked to, etc. ...
0
votes
0answers
57 views

How to calculate the number of pixels in each class using QGIS?

I have a raster file with slope values. These slope values are divided among several classes like A,B,C. Then there's a vector map with points. For an example a point can belong to class A of slope ...
0
votes
1answer
31 views

Using weighted species distribution data to create a scored grid map

I'm currently working on a project within ArcGIS Pro, I have a large dataset (>40000 points) comprising a list of ~120 indicator species as point data that are assigned numerical scores (1-10) based ...
1
vote
2answers
63 views

Select evenly distirbuted points of unevenly distributed set

I have a task which looks pretty nontrivial yet pretty standard. Let's say, I have a set of points, unevenly distributed on the map (i.e. in some regions there are a lot of points, while in the ...
2
votes
1answer
329 views

Split linestring by selecting two points in OpenLayers?

I have a project where people can drag and drop a gpx file. This results in a multilinestring. People should be able to take a piece of their route and submit that. I was thinking of letting the user ...
1
vote
1answer
60 views

Output file from Point Sampling Tool plugin returns data but no sample ID using QGIS

I have sampling points in QGIS which all have a unique ID, and I'm trying to collect various geographic and climate data for those points from a variety of sources. Although the source raster data ...
1
vote
0answers
53 views

Moving points to nearest raster cell with values in ArcMap [closed]

I have two types of data, one that is a point vector (occurrences), and one that is a raster (environment). The environmental data has both cells with numerical values or NA. Both of the types of data ...
1
vote
2answers
206 views

Calculate sequential numbers along line

I am looking for a way to calculate sequential numbers in points feature along line. I've got polygon 1 feature intersected with other layer of polygons. Then I extract points from the intersection, ...
1
vote
1answer
147 views

Adding points every X distance along a LineString [closed]

I have a list of LineString coords: list = [(90, 170), (99.0, 159.0), (321.0, 159.0), (300, 146), (296, 23)] which looks like this. How to interpolate a point at every X distance along the line ...
1
vote
1answer
336 views

Using spatial points to extract values from large raster in R

I am working with location data for 22 different individuals (id). The data contains an id column, and coordinates (UTM_x and UTM_y). For all individuals combined, there is a total of 991,099 ...
0
votes
0answers
51 views

Creating random points using feature class points data within polygon using ArcGIS Desktop

I have ArcGIS Desktop 10.4. I have a shapefile containing a number of polygons with specified attributes. And a feature class containing a large number of points. both have a field in common. ...
1
vote
1answer
54 views

Joining point layer with line layer using coordinates

I am using QGIS 3.14, and I want to represent a road network. I had a polyline layer (3257 entities) as a background. For each one I have calculated x_start, y_start, x_end, y_end coordinates, length ...
2
votes
1answer
40 views

Create points along a line from spreadsheet data in QGIS

I have a sewer network comprising: Manholes - a points layer Pipes - a polyline layer, with attributes comprising the upstream and downstream manhole I have a spreadsheet of pipe defects (from a ...
2
votes
1answer
100 views

Copying set of points perpendicular along polyline

I have a polyline which represents the middle of a river. Perpendicular to this polyline there is a layer with a set of points. These points all have an "X" and "Y" coordinates as well as a height ...
1
vote
0answers
13 views

Extrapolating point values to raster, excluding NAs

I have a raster generated from drone imagery that has been classified into water (river channel) and NA (all areas outside the wetted channel). I have a point file running down the center of the river ...
2
votes
2answers
129 views

Populate field in one layer with corresponding value from another layer

I have 2 existing vector layers: 1 point, 1 polygon. In almost all cases the points overlap a polygon. The point layer has multiple features (1,000+) with an existing field which I need to ...
2
votes
2answers
82 views

Get median distance from a bunch of points from a assigned location and draw buffer accordingly

I have 2 point layers, say layer A and Layer B Layer A with a bunch of points, Layer B with a single point. I first need to measure all the distances between every single point in layer A and the ...
2
votes
1answer
43 views

Counting points between two intersections: Roadway Network

I have a roadway network as a line feature and crashes as point features. I need to count the number of points that lie between two intersections of roadways. The biggest problem is the road is also ...
0
votes
0answers
37 views

When creating a Nearest Neighbour from xyz, the raster cells are not centered with the original point cloud (QGIS)

I have a gridded point cloud 0,25x025. I ran a Nearest Neighbour with the same resultion (cell 0,25). The points of the cloud and the raster are not centered as seen in the picutre. Am I doing ...
2
votes
1answer
97 views

Find minimum number of polygons connecting two points

Given GIS data of polygons and two points, is there a way to find the minimum number of polygons you need to traverse to walk between the two points? Even an approximate approach would be fine for my ...
1
vote
1answer
39 views

How to add points using coordinates to QGIS without having to create a CSV? [duplicate]

Is there a way that I can add single points to QGIS (v3.4) by inputting coordinates directly into QGIS, rather than creating a CSV and adding them that way? I know there used to be a plugin that ...
4
votes
1answer
111 views

How do I construct a line from points that are out of order?

I'm using ArcGIS Pro and would prefer solutions using ArcPy, ArcMap, or ArcGIS Pro, but an open source alternative may work too. I'm trying to construct a line from a series of points using the ...

1
3 4
5
6 7
35