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

2
votes
0answers
14 views

Project a point onto a profile tool graph in QGIS

I'm using the Profile Tool add-on in QGIS to extract a profile of a raster data layer. Along this profile there are a series of points which I'd like to project onto the Profile Tool graph so that I ...
1
vote
0answers
19 views

Openlayers 3. OnClick on touch device not triggering perfectly

I have the forEachFeatureAtPixel function and try to trigger an event on click on a point layer with a custom icon. However, the performance on touch devices is really bad. I need to click several ...
1
vote
0answers
39 views

How to calculate sum of values in a point shapefile within a moving window

I have a point shapefile that has a 'rank' attribute with numbers between 0-100. I need to calculate the sum of this value for points within a 10km circular moving window anywhere within my area of ...
1
vote
0answers
18 views

Calculating Moran's I on large point dataframe in R

I have a dataset of about 77,000 points of which I want to test autocorrelation. I have tried to compute the test statistic using the testSpatialAutocorrelation tool in the DHARMa package, which uses "...
0
votes
0answers
20 views

Automatically Trigger write fields from polygon to point when adding point

When editing, I would like to create an SQL trigger that will write fields from my parcels layer to a point layer that the end user is editing. Essentially, when a point is placed on a parcel, that ...
2
votes
1answer
21 views

Auto snap of point features with lines

I want to snap my point feature with Line features. So That I can perform join attribute by location to read attributed from points into lines. Is there any way I can do this task automated. Once ...
1
vote
1answer
40 views

Using points2one?

I downloaded the points2one plugin and tried many times to connect points to a line, but it never works. Is there something that I set wrong? I tried the answer,but it has been running 10 mins, and ...
2
votes
1answer
34 views

QGIS, exporting geometry columns doesn't give decimal degree coordinates?

I am working on a project in qgis with my distance and coordinates units set to degrees and decimal degrees. However the shapefiles I work with have meters listed in their 'units' section (under ...
1
vote
2answers
82 views

Create a point for each line not-along the lines

I would like to automatically create a vector of points. The vector should be composed of one point per each line of a line vector (approx 3000 features). Those points should be placed near each ...
1
vote
0answers
21 views

Discrete value extract from raster

I am trying to extract values from a landuse raster layer to a point shapefile. However, when I use either Extract Multi Values to Points or the Extract Values to Points tool, it returns pixel values ...
1
vote
0answers
31 views

Nearest point does not intersect line in 'sf' R package

This is a similar question to my recent questions on how to find the nearest point along a polyline and how to split a polyline by an intersecting point using only the sf package. My question has ...
0
votes
1answer
32 views

Grouping points into polygons ArcGIS

I am using ArcGIS 10.2.1. I have a set of clustering points. I am trying to create a zone for these points. Is there a tool or script to group the points in an area and convert them to a polygon? I ...
1
vote
4answers
88 views

Find nearest point along polyline using 'sf' package in R

This is a follow-up question related to my earlier post about using the sf package to split polylines using nearby points. I have 450 points with XY coordinates and a large river network (~214,000 ...
0
votes
1answer
42 views

Accuracy error between Trimble RTK and Juniper Geode GPSS systems

I have set up a system for surveying points with a Juniper Geode GPSS because the survey team is too busy to do it themselves. There is a consistent shift to the northeast of the coordinates I am ...
2
votes
1answer
67 views

Split polyline by point using 'sf' package in R

I'm learning the sf package in R and would like to locate about 450 sites along the nearest reaches of a river network and to obtain the upstream and downstream distances along the reach where the ...
2
votes
1answer
55 views

QGIS 3.2 - Point Sampling Tool error

I am using "Point Sampling Tool" in QGIS 3.2 to obtain values from a raster file to a point layer. After selecting the layer with the points, the values to get values from, and defining the Output ...
6
votes
1answer
37 views

Point pattern gradient fill

I'm trying to create a point pattern gradient fill for some polygons, because I don't want harsh boundaries. The boundaries should blend in with the background. Since I use open streetmap as ...
1
vote
0answers
89 views

Qchainage: python error with QGIS 3.2

I get a following python error while working with QChainage-tool in QGIS 3.2. Because of that (assumably) the OK-button is also greyed out. My goal is to retrieve start and end points of line features....
0
votes
0answers
16 views

Ruggedness Index appended to point data [duplicate]

I'm working with two key files, one is a ruggedness Index raster built from a DEM raster file and the other is point data for roughly 100k points. What is the simplest method available using open ...
3
votes
1answer
37 views

Counting occurence of unique points across large grid using QGIS?

I am attempting to map out, in a 10x10 km grid, the occurrence of unique plant species. I have used the "Points in Polygon" feature to count and map the unique points across the grid, however I have a ...
1
vote
2answers
54 views

extract data of polygon shape which intersect with point shape R and create data frame

I want to extract data of a SpatialPolygonsDataFrame li which intersect with the SpatialPointsDataFrame p R and then create a data frame with the coordinates and values of both objects. I tried ...
2
votes
3answers
98 views

Nearest distance from point to pixel in QGIS?

I have 1) a point layer and 2) a binary raster file (1 and 0). I need to estimate the Euclidean distance from each point to the nearest "1" pixel. I know there is a tool in ArcGIS but I only have ...
0
votes
1answer
24 views

Finding output values of point density calculation?

I ran the point density tool and got an output, but because the 'Area Units' option in the Point Density was locked to Square_Map_Units - I don't know how to tell what units the density was calculated ...
4
votes
3answers
230 views

Qgis 3.2 atlas with set of points

I have a shapefile with 100k points. I want to create an atlas that would only show set of points having the same specific attribute. gid;geom;id_coupe;symb 3572;"POINT(1.79008147341714 5.93)";"...
2
votes
1answer
52 views

How to join tables to create a new shapefile in ArcMap?

I'm unsure how to join a table and reference shapefile in order to create a new shapefile. I'm using ArcMap. I made a simplified version example below. I have a shapefile of points (locations where ...
1
vote
1answer
44 views

Adding a point at given lat/long Australia - suspected CRS issues

I am hoping to add a geographical point to a layer in QGIS with a specific latitude and longitude value (from GPS.) I have had no success with a number of methods (trying to edit with Numerical Vertex ...
1
vote
2answers
43 views

How to spatially join attributes of a polygon closest/nearest to a point in QGIS?

this seems like it should be a simple task but so far I've not had any luck. I have a points shapefile (showing where manholes are on public roads), and a polygon shapefile showing where building foot ...
0
votes
0answers
16 views

Point/Feature to Raster-unwanted Grid of missing Data raster Cells-ArcGIS10.5

I tried to convert some point data (points on a regular grid of 100m by 100m) with the Feature to Raster Tool and the Point to Raster Tool (Rastersize of 100m) but in the resulting Rasterfile there is ...
2
votes
2answers
149 views

How do I construct a geometry point in SRID 4326 from lat and long? [duplicate]

I have a geometry(Point,4326) column on my table: CREATE TABLE foo ( geom geometry(Point,4326) ); I want to insert into it. Currently' I am running INSERT INTO foo (geom) VALUES ( ST_GeomFromText(...
2
votes
1answer
61 views

Calculating distances between points for every available point in the dataset

The data of interest: a point vector and a line vector. Both shapefiles, with the line vector acting as the road/motorway. All of the points are along the road so close by. I want to calculate the ...
0
votes
0answers
24 views

Displaying polygon as point in ArcGIS Online?

I want to display polygons as a point in ArcGIS Online. I do not want to convert or make a new dataset. Any ideas?
0
votes
1answer
53 views

Checking if point is contained by any geometry

I have a table of geometries (mixed MultiPolygons and Polygons), I want to check if a point is contained by any of the geometries in the table. I don't care about how many, nor I want to retrieve any ...
0
votes
2answers
98 views

Add Point to Layer WITHOUT Typing in Coordinates

I have a point layer and a line layer in my QGIS project (QGIS 3.0.3). I want to add a point to the point layer at the intersection of two lines in my line layer. I toggle editing for the point layer, ...
4
votes
1answer
137 views

python cluster Points with DBSCAN keeping into account Polygon boundaries

I have a GeoPandas dataframe called geo containing: 431978 unique spatial Points representing all households in a city. 112737 Polygons representing all the premises (panden) in a city dataframe ...
0
votes
1answer
25 views

Point intersect-setting tolerances in ArcGIS Desktop?

I need to find out which polygon a series of points fall in. Normally I would do this with an intersect so I can then export the data and process it externally. As the point layer contains some ...
0
votes
0answers
22 views

Calculating distances between points (not nearest) without Point Distance tool in ArcGIS Desktop? [duplicate]

I need to calculate the distances between the points of two points layers which are not separated of more than 2000 meters. I know that "Point distance" tool is doing it greatly but I don't have the ...
1
vote
0answers
58 views

Create QGIS action that shows point at coordinate on click

In QGIS 2.18 in my current point-layer I have related coordinates, which I would like to pop up when clicking on a point in the point layer. I try to use QGIS "Action" for this. Simplified example of ...
0
votes
1answer
20 views

Marking zonal statistics areas with a point

I'm working with Lidar data, and my end goal is to get a collection of points representing cliff bands, with key information attributed to the individual points. So far I've been able to identify my ...
2
votes
2answers
68 views

r - reinsertion of intersection points into initial dataset after sf::st_intersection

I have one dataset with POINTS called pts1. I'm connecting them into aLINESTRING and I'm calculating intersection points of that LINESTRING with multiple LINESRINGs from another dataset. The main goal ...
-1
votes
2answers
52 views

Finding Start and End Point IDs for a Line [duplicate]

I have a simple point feature class and line feature class. Each point has an ID. The Line feature class has a "Start Point ID" and "End Point ID" field, both of which are currently empty. The line ...
0
votes
1answer
34 views

Point from FeatureSet as Input to Python script tool?

I'm looking to use a point on the map provided through a FeatureSet as an input to both a buffer and Select by Location. I have created the geoprocessing tool that works, but am having difficulty with ...
1
vote
1answer
37 views

Create new point layers by Value

i have trouble working with my pointlayer, because it has too much information and i want to split it in pieces. There is GPS-pointdata recorded with GPS-Collars and all of the data is in one file. I ...
0
votes
0answers
64 views

plot coordinates as points with spplot in R

I want to do something that I thought should be relatively simple, but it doesn't seem to work... I have a SpatialPointsDataframe and a SpatialPolygonsDataframe. I want to plot all the points I have ...
0
votes
1answer
19 views

Drawin a feature on my map

This is my code but it doesn't show anything... var vectorSource = new ol.source.Vector({}); var map = new ol.Map({ layers: [ new ol.layer.Tile({ source: new ol.source.OSM() ...
2
votes
1answer
184 views

Detecting if GPS coordinates fall within polygon of points?

I'm looking for a simple explanation on how to detect if GPS coordinates fall within a polygon of points. I would prefer an explanations that can be done using paper and pencil and not programming ...
0
votes
1answer
33 views

Drawing a polygon over a point in OpenLayers

I read a geojson with points and their coordinates, but on the map, I want to draw polygons, not points. this is an example of the polygon that I want: Yes, it is a boat. How can I do it?
1
vote
2answers
58 views

Create line feature from point feature attributes: azimuth and distance [closed]

I've used Shape Tools plugin's Azimuth Distance Digitizer tool, to point and click, and then enter azimuth and distance in order to get a line. This case is the same, but I have many features, so it ...
0
votes
0answers
33 views

Split Line at Point not working in ArcGIS Desktop?

While i was using the "Split Line at Point" function with two features, both with 80000 point features and 90000 line features each, the finished result wouldnt split on the points. It would split a ...
0
votes
1answer
129 views

Dynamic point clusters in QGIS

I have a point layer with singular points set with high accuracy to the position of certain sites, each point representing one site. There are 8 different types of site. When representing these points ...
0
votes
1answer
48 views

How to display elevation points from point layer as in 3 different group/classes in qgis?

I have downloaded my elevation points from website Natural earth data (at a scale 10 Million), I wanted to display my elevation points like this in 3 classes: 1) Elevation points, symbol('+') and ...