Questions tagged [point]

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

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Extract Corine Codes from QGIS to an .csv

I'm doing a project and I need to extract the Corine Codes to a csv accordingly to a set of points. I have already mapped these points on QGIS in a .csv format (with latitude and longitude) and I ...
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Join multiple geospatial polygons to their nearest lat/long point in a different table using GeoPandas or other Python tool

I've got a list of voting precinct geospatial polygons that need to join to a different table with just lat/long points for each zip code. How can I join each of the precinct polygons to its nearest ...
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Getting NaN values when I extract pixel values of a raster using a point shapefile in R

I try to extract pixel values at defined points in a raster file in R, using a point shape file. With some raster files it works perfectly, with others it returns 'NaN' values for all extracted points....
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Why the center points created from center of pixels in ERA-5 dataset are not appear in correct places when exported and showed in ArcMap?

I used This Code to create points from the center of pixels for the ERA-5 Dataset in an AOI and then exported them to Drive as a Shapefile and add them to ArcMap. After that, I used This Code to clip ...
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Request attribute information from multiple polygons below a point

In QGIS I created a "grid" with points 100 m apart from each other. Below this layer of points there are multiple layers of polygons. Each polygon has a column with values in its attribute ...
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Seeking ArcGIS Pro tool that calculates distance from different points to another feature class with multiple distance along road network

Is there a specific tool that calculates the distance from points feature class to another points feature class? I have a data set containing forest compartments (point), customer destination (point), ...
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2 votes
1 answer
38 views

Point vs Multipoint and table join using QGIS

I have to point some pottery on QGIS. The thing is that each pot has a key number but it may be found in more that one broken pieces (example: P234 has 4 pieces). Should I add them on my floorplan ...
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ArcMap only plots some points of shapefile

I am using ArcMap 10.7. I have a point shapefile with nine weather stations in Patagonia. It's available here. I want to plot all four variables as a bar chart for each station, so that you can see ...
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3 votes
2 answers
71 views

Counting points within certain distance of each other in QGIS

I have a shapefile right now that contains many points. I would like to count the number of point points that are within 150 ft of each other. For example, I should count 8 locations with points ...
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Bringing in another layer in the Geometry Expression coding

Im looking to create a output triangle using the Geometry by expression tool. I have two layers, layer 1 is a viewpoint and central location and layer two is a collection of locations. I want make a ...
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Calculate angle between two furthest points

I need a way of automating this whole process rather than measuring the angle manually. I want to calculate the largest viewing angle from each of the viewpoints (red dots) in relation to the ...
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1 answer
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Exporting data from points to a polygon

I'm new on GIS. We were migrating from an old map program to QGIS. My problem is that I need to have Polygons with data. And I have the information that I need in the polygons in "entities" ...
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Creating elevation profile from points with X,Y,Z coordinates

I have a set of points that contain X, Y and Z data. I am trying to plot these either in 3d space or 2d space using X and Z. As an extra it would be nice to be able to compare different sets of data ...
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2 votes
2 answers
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Saving "on mouse click" created markers to be available after reloading the browser in Leaflet?

I have found that when I manually add a marker, the marker stays on the map even after reloading the browser page. Example: var marker = L.marker([51.5, -0.09]).addTo(map); However, all of my markers ...
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Calculating missing points on line vector in QGIS

I have a linear vector of a river subdivided in 55 traits, all connected to each other. In 5points along the river i toke some measurements. What I want to do is to calculate the values in the 50 ...
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2 votes
1 answer
35 views

Find points which fall within specified distance to POI using Python

I have created a test shapefile containing 15 point features in EPSG:2157 and exported it geojson. Each point has been assigned an ID - e.g. 1, 2 ,3 , etc. They look like so: I now want to use ...
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1 vote
1 answer
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Finding distance between points using Python

I have a shapefile containing 10 test points like so: The spatial reference is 2157 - Irish Transverse Mercator I am wanting to find the distance between each point in Python. Ideally, something like ...
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1 answer
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Offset points in QGIS using attribute values for Bearing and Distance?

Background: I am working with a biodiversity researcher who will be collecting field data on frogs in Peru over the summer. Because of the dense canopy at the field site observations are taken by ...
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Counting total number of points within polygon (Buffer) layer using ArcGIS Pro

I'm trying to count the total number of points contained within a polygon layer. I have a series of buffer layers, each getting progressively larger and encompassing more points. I have used the "...
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4 votes
2 answers
61 views

Groupping points to clusters containing similar number of features using QGIS

The question Using QGIS, how to cluster unevenly distributed points from the same layer to groups of about the same size / containing the same number of features? The problem I have a large point ...
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4 votes
1 answer
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Adding/concatenating multiple values in column when using line intersections in QGIS

I want to use the "Line Intersection" function in QGIS to create points wherever lines cross. The lines are roads and I need the road names in my points layer. Does anyone have an idea how I ...
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QGIS 3.24 - how to export points as arc or polygon

I have a GPS coordinate file that defines points (locations.) I have a second application that is limited in that it can only show arc or polygon shapefiles. This application can't process a point ...
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1 answer
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Add another set of coordinate values in the same point entity in QField (line start and end)

In an attemp to add another set of x,y coordinate to QField (mark the start and the end of a line feature with points) I have created another set of "lat" "long" fields linked to a ...
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How to parameterize the PointSymbolizer in a SLD Style?

I am trying to clean my GeoServer deleting some redundant SLD Styles. All this styles work in the same way, they assign some image (different for every style, which name is hardcoded in every style) ...
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3 votes
1 answer
207 views

Building the shortest route through all points in QGIS

How to build the shortest route through all selected points, starting from a given point? Which plugin to use? There is a point layer and a linear layer for all routes between points.
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Create attribute column with index sorted by coordinates in Point Layer

I have a layer of points and I want to add a column with an index according to the coordinates. I already thought about sorting the UTMX and UTMY coordinates, but still the result doesn't convince me, ...
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31 views

Extracting lat/long of network vertices

I have created a point from the road network using vector>Geometry tools>extract Vertices tool. But after creating point from the line using this tech I have seen that the lat-long is the same. ...
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2 votes
1 answer
56 views

QGIS Offset Points by value

I've got one layer with a line (e. g. a road) and one layer with points (e. g. trees along the road). So far, the points are placed right on the line, but the attribute table of the point layer has a ...
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3 votes
1 answer
51 views

Creating lines indicating the shortest distance points to line in QGIS [duplicate]

How can I create lines indicating the shortest distance from a points dataset to a to line, avoiding the line to points tool first? In the past (at another company) we used MapInfo "Distance ...
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11 views

Setting to the same ViewPoint yields different result ESRI C#

I'm trying to implement some zoom-in/zoom-out feature in my program, for this I'm using two ViewPoints with WGS84 projection, one is default and other one is current, when I return to the default one ...
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2 votes
1 answer
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Making rule on dates for vector points in QGIS

In QGIS, I would like to create a rule-based on dates for some vector points. These points have a field for dates, in the format dd/mm/yy. The rule would be such that if a date is less than a certain ...
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Adding information/attributes to Delimited Text Layer or points on a QGIS Map

I have a .kml file which has all the project locations for the projects we have done in the past. These Places on Google Earth Pro shows a point that I can click to get some basic information about ...
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6 votes
6 answers
486 views

Selecting only one point in polygon using QGIS

I have two shapefiles: polygon(buffer) and point. How can I select only one point in each buffer in QGIS? If I use the "Select by Location", I will get all points inside the polygons, ...
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ArcGIS: Sort points from 2 different feature classes based on an ordered sequence [duplicate]

There is a series of 2 point feature classes that were merged and I want to generate a single continuous line feature class from each of them iteratively, with the points being connected by the ...
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2 votes
3 answers
63 views

Plot points around defined centroid using degrees and distance in QGIS

I have a shapefile plot_center of plot centroid points (like picture below) and then I have a Excel table with trees which corresponds to plot centroid points by common field ID. The excel table ...
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1 answer
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Polyline endpoint query layer in ArcGIS Pro

I have an Oracle 18c/SDE.ST_GEOMETRY polyline FC (15,000 features). I want to create a query layer (or db view) that will display the startpoints and endpoints of the lines in ArcGIS Pro. Is there a ...
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3 votes
2 answers
160 views

Selecting points which touch "boundaries" of another polygon using QGIS

I have an quite complicated polygon shapefile and a lot buffers around points (second shapefile). These small polygons are within and outside of the big polygon. I need to select those polygons which ...
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1 vote
0 answers
31 views

Color gradient in Point layer, based on attribute

I have a collection of points[nr, x, y, z] with elevation z added to the map like this: ... for i in range(len(points)): seg.setGeometry(QgsGeometry.fromPointXY(QgsPointXY(points[i][1], points[i][...
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4 votes
1 answer
57 views

QgsPoint invalid argumets in PyQGIS 3

I get an error: "Invalid type in constructor arguments." for a QgsPoint in QGIS 3. I was fine in QGIS 2, it never gets to print D for steps in range(numVertices): vertex = geom....
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3 votes
2 answers
129 views

Looking for Python equivalent of QGIS "Nearest Neighbour analysis" tool

I've been using QGIS "Nearest Neighbour analysis" tool to find out the following information about my point shapefile Observed mean distance Expected mean distance Nearest neighbour index ...
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50 views

Way to determine cell size of a shapefile

I am using the Point to Raster tool in ArcGIS Pro to turn my shapefile in to a raster. The automatic cell size used (pre-defined by ArcGIS Pro) is 8.1m - this gives me a low resolution output. With ...
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0 votes
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23 views

How to make point symbols also have the number labeled inside the point?

I am trying to make a map where I have different colors for different categories of business type (retail, service, etc.), they are points on the map, but I need the point symbols to have the ID ...
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3 votes
2 answers
191 views

Creating CSV with lat/long from point shapefile using Python [duplicate]

Does anyone know how to create a CSV containing lat and long fields from a point shapefile in Python? I can only find info on how to make a shapefile from CSV with lat/long and not the other way ...
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1 answer
39 views

Extracting polygon features based on single layer attribute polygons using ArcGIS Pro [closed]

I have a single-point shapefile with gauging locations all around the world, and I also have a shapefile with country boundaries. See picture of files. How can I extract the point files that are ...
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1 vote
1 answer
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Adding in points based on description no GPS data using ArcGIS Pro

I am working on a project that has a mix of points where half have specific GPS data and the other half only have descriptions of where the points are. I have added in and moved the GPS points to the ...
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2 votes
0 answers
28 views

Generating Points Along Lines not starting at the start of my line feature

I am trying to generate chainage points in 50m intervals on a road system including the start and end of the line. Each road is its own single continuous line and while attempting to solve my issue, I ...
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1 vote
1 answer
150 views

Creating a point pattern (ppp) error using SpatStat in R: "Only projected coordinates may be converted to spatstat class objects"

I have a point dataset, and I am taked with filtering out duplicate coordinates, removing all points that are outside of a specified county shapefile, and then creating a ppp points object. However, ...
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1 vote
0 answers
48 views

Convert vector points to raster using minimum method in Python

I have a large dataset containing over 10 million vector points I am looking for a way to create a clear and accurate raster in Python by converting the vector points to a raster using the Minimum ...
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0 answers
19 views

Points in lines extraction of coordinates automate

I'm currently working on a project with ArcMap. I'm having a problem on how to extract the x,y info of all the points in a line, meter by meter. This is the problem & objective: So I have 1 line, ...
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2 votes
2 answers
52 views

FME GeometryReplacer, WKT Error

I am trying to load POINT WKT Geometry from MS SQL Server, it is in WKT Format. Using the GeometryReplacer, I am receiving an Error, and everything looks right as far as I can see, it continues to ...
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