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Questions tagged [point]

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

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19 views

Can't spatial join polygons and points [on hold]

Struggling to spatial join a point layer (cell towers) with a polygon layer (states). The points layer is global, while the polygons are only within the United States. I need to eliminate all points ...
-1
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1answer
39 views

Taking data from a CSV file to create points on a shapefile

I am trying to import data from a CSV file and write a script that will generate points on a new shapefile. I am running into issues for when I try to update the InsertCursor. I get an error of "not ...
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1answer
23 views

ArcGIS JS API Failed to load feature layer

I want to add test feature on my ArcGIS map using feature layer. I create layer using Graphic as a source. After a lot of googling I create my point the following way: require([ "esri/Map", "esri/...
2
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1answer
48 views

Find a point in a multipolygon geometry

I need to know which points from Table 1 are contained in Table 2. In Table 1 I have longitude and latitude and I made points with ST_SetSRID(ST_MakePoint(d.longitude, d.latitude),4326) as geom ...
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0answers
11 views

Convert cluster points into a single point

I need to try and group cluster points by attribute into one point. So all points with the same attribute need to be grouped onto 1 location.
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2answers
33 views

Convert SpatialPoints to SpatialPointsDataFrame

Give an object x of class SpatialPoints how do I convert it to a SpatialPointsDataFrame ? class : SpatialPoints features : 50 extent : 3187836, 3827836, -489229.3, 950770.7 (xmin, ...
2
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1answer
13 views

Compare two points and conclude direction

Is there a simple method in geotools or JTS to conclude the direction between two geospatial points? I would like to conclude if point A is (north, south, east, west, NW, NE, SW, SE) when compared ...
1
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1answer
63 views

Interpolation of 3 borehole data

I have three points (boreholes) on the map. I created them using shape file layer. Each borehole shape file layer shows the strati-graphic section of the ground. (i.e. between 0-50 m = Gravel , 50-60 ...
1
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1answer
55 views

Changing coordinates of points in the Attribute Table in QGIS

I have a shapefile. Within the shapefile, there are approximately 500 points. I want to change the coordinates of these points in the Attribute Table. But there is no coordinate column in Attribute ...
1
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0answers
29 views

Filtering points in cloud to find representative set

I have multiple sets of points that represent 'instances' of GPS traces. When ordered and connected, I have a line that represents each trace. I'm trying to find the most average line through this ...
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0answers
20 views

Distance from a point to a poly line and attributes from the poly line GIS

I'm trying to figure out what tool would be best to get the distance from multi-points from multi polylines and see which attributes are closest to what point. I'm doing a project where I have ...
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1answer
19 views

Insert a point into feature class based on another point [arcpy] [closed]

My assignment is to insert (using insertCursor) a new city at 0.02 decimal degrees east and 0.03 decimal degrees south of another city. The cities shapfile did not originally have x-y coordinate ...
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0answers
24 views

Unable to convert shapefile to raster using Natural Neighbor tool

I have been trying unsuccessfully to create a raster from a point shapefile of altitudes using SAGA and the natural neighbour algorithm but it always shows an error. The data was imported using a ...
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0answers
16 views

QGIS extracted azimuth used for symbol rotation seems not reproduced faithfully [closed]

A field of calculated azimuths* (degrees) of digitized two-point lines was created. Field expression to calculate azimuth: degrees( azimuth( point_n( $geometry ,1) , point_n( $geometry ,2 ) ) ) . ...
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0answers
27 views

Unable to save point features to QGIS on MySQL database

I created a table with point geometry in MySQL. Subsequently added a vector layer from MySQL table. The table could be accessed from QGIS. However on pressing the add button the system threw warning ...
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0answers
18 views

How do I find the closest distance to a line and then find the length of the remainder of the line to a point?

I want to measure the distance of a shape to a line and then follow that line all the way to a point and calculate the distance traveled. Here is my current map. I want to store that distance value ...
4
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2answers
53 views

QGIS Random point inside polygon **but** - with minimum distance between points from different polygons

I am trying to generate random points in stratified area with 2 polygons. I want to generate 6 random points - 3 in each but to set minimum distance not only between points from same polygon but ...
1
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2answers
56 views

Generate points along branching lines

I am looking to generate points along a series of connected lines at regular intervals, but I wish to keep this interval even when a line is branching into 2 or 3 other lines. All the regular tools I ...
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1answer
21 views

GeoServer Point Labels not rendering until Scale = 1 : 545K

I have a series of points that I have reading an attribute to display a label. I don't see the labels on my map until Scale = 1 : 1M when SOME of them start to show up. But it's not until I hit Scale =...
2
votes
1answer
32 views

I want to plot point shapefile on a raster to know if they are at the right place in R

I have one raster and a shapefile of points. I want to check them if they are in the same coordinate system by plotting them together on a map (like in a classical GIS), here the R script : # raster ...
1
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1answer
39 views

Creating points with attributes from coordinates in ArcPy

I know how to create points by coordinates with arcpy using the following code: import arcpy ptList =[[20.000,43.000],[25.500, 45.085],[26.574, 46.025], [28.131, 48.124]] pt = arcpy.Point() ptGeoms =...
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0answers
20 views

Point to line - Qwater model

I'm using EPANET in QGIS (extension QWater). I have different layers : pipe network (line vector) household (point vector) Firstly, I'd like to connect household automatically and perpendicularly to ...
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1answer
75 views

Digitise a circle around a point in QGIS 3?

In previous versions of QGIS I used the Intersect It plugin for drawing circles around a point with a specified radius. However, I cannot see a way to digitise a circle around a point in QGIS 3. I ...
0
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1answer
20 views

MSSQL performance with Geography (point within polygon)

I have a query, below, that works - however its very slow, looping through roughly 24,000 points per second. This is a rather high end production DB server with MSSQL and SDE, and in other instances a ...
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0answers
33 views

Extract point data to polygon features [duplicate]

I am trying to import data from a point that lies on a certain polygon feature (or raster). As an output I would like the polygon feature to have the point data as a new field in the attribute table. ...
0
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1answer
47 views

Creating points using ArcPy?

I'm new to ArcPy. I have coordinates of points 70°8'12.938"E ,25°26'11.569"N 79°10'33.945"E, 25°43'58.898"N 80°25'46.695"E , 16°45'15.907"N 70°6'57.527"E , 17°10'51.245"N I tried below code:...
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0answers
43 views

Finding nearest distance between point and polygon layers in QGIS

I am using QGIS to undertake an analysis for a project. This involves a polygon shapefile, which represents a boundary of a site, and a series of points which represents the location of parks. I ...
2
votes
1answer
30 views

Make polygon appear as point when zooming out beyond set range in ArcGIS Online

Is it possible to have a polygon layer visually appear as a point when zooming out beyond a certain extent that i will determine in a web map in ArcGIS Online? Or do i have to add a different layer ...
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0answers
12 views

Point graphic at KML center

Is there a way to add a point graphic at the center of a KML file i have added on a web map in ArcGis Online? I'd like to do that so as to have a point indicating the KML's position when zoomed out ...
1
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1answer
35 views

Using Click locations to determine azimuth in QGIS 3

I am using QGIS 3 64bit. While adding points to a shapefile (layer), what expression captures the insertion point coordinates of a point feature to use as a start point for an azimuth determination ...
0
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1answer
29 views

Adding columns with easting and northing of points using ArcMap?

I've got LSOA dataset with centroids weighted by population. What I am trying to do is get coordinates of those points (centroids) so that I can then calculate distances to centroids outside of ArcMap ...
2
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1answer
30 views

Create multiple paths by joining a set of start points in one layer to a single end destination in another layer?

I need to create a batch of paths so that I can calculate the best potential placement of a development site by counting the number of intersecting features along that path. I have a grid of points ...
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0answers
19 views

Identify raster cells with point shapefile in QGIS

I have a binary raster, a point layer, and a polygon grid layer. I want to know how many raster cells have a point associated with them within each of the polygons of the grid, and the value of each ...
3
votes
1answer
58 views

Moving Multiple Points Into Single Polygon using ArcGIS Desktop?

I have several days worth of geotagged imagery to which I've attached a tree canopy mortality rating. The goal is to eventually join all of these classifications to a shapefile that contains ...
1
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0answers
42 views

Most of a shapefile is not exporting to ArcGIS Online or Google Maps

I am having an issue where the vast majority of the shapefile and point data is not exporting from ArcMap. Its just in one particular area where the polylines show, the rest do not show and this is ...
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0answers
37 views

Pixels, distance to line (negative left, positive right) r

I am using r to do some spatial analysis. Here is my project, I am using raster files (that contain information on land use) and a polyline (which is a border between two regions). I am analyzing ...
0
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1answer
38 views

shapely wrong output — when snapping points to line shapefile

I have a series of nodes to be connected to a road network, so as to calculate the cost of transportation. I used shapely to snap the nodes to the road network polylines. Most of the connections ...
2
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0answers
67 views

Shortest path between start and end point with many other points in between

Sorry if double post, but I haven't found this specific problem in the search function. I want qgis to show me the shortest path (direct) between many points with each point only is hit once. There is ...
2
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1answer
54 views

Making points count automatically when zooming out in QGIS?

Can I make the point count itself when there are too much stacked up points in one area when I zoom out my map? I want my output e.g. Area of ganli points to be like this when i zoom out Water ...
8
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2answers
205 views

Create line segments at point coordinates in QGIS

I have a point vector layer with angle field. How can I create line segments at these points with certain length and angle? I did this with style options but I need this physically as lines vector ...
3
votes
1answer
46 views

Copy elevation from points to line

I have a vector line, but it has no z-dimension. I have some points along the line, which have the elevation included. Can I add the elevation from the points to the line at that specific point? ...
0
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1answer
18 views

Getting SyntaxError from Coordinate Transformation (points) with ArcPy?

I'm trying to do a coordinate transformation for points with ArcPy in ArcGIS Pro by using x and y coordinates as Input. I tried the following: import arcpy inputSRS = arcpy.SpatialReference(31467) ...
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vote
1answer
42 views

QGIS 2.18: Import Result Table of a query into QGIS as pointlayer

I have a query which outputs a table with an unique nodeID and x-,y-coordinates. How can I import this query result table into qgis as an point-layer? I have tried it with the DB-Manager (see below)...
4
votes
1answer
40 views

Separating points with identical coordinates using ArcPy?

I need to move apart points with identical coordinates. I have a point layer where there can be as high as 4 points on each other (same coordinate). I want to separate these points from each other (...
1
vote
1answer
33 views

Running convert Raster to Point Features in arcpy returns an error

I'm trying to convert a bunch of rasters to point features to further build a regression of those. Is it possible to do that without a conversion using arcpy? If not what am I doing wrong converting? ...
0
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1answer
44 views

Measuring distance to two Points in ArcPy?

I would like to know how to measure the distance from two Points in ArcPy? I know only Geometry has the distanceTo method but how do I could make a typecast in ArcPy? I got the following error ...
2
votes
2answers
148 views

How to convert several 'point' data to 'line' data?

I am using QGIS V3.4. I have over 1000 data points situated between a start and finish point expressing the Depth of coverage (DOC) of a pipeline. I need to identify the places along the pipeline ...
0
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1answer
69 views

Points that fall outside a polygon in QGIS [duplicate]

I need to figure out how many points, and which ones (with labels) fall outside the boundary of a particular polygon in QGIS.
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0answers
34 views

Extracting value of raster based on points layer?

I want to extract values from a raster file containing gridded population in US (spatial resolution of 1X1 km) based on points shapefile, also in US. Both are in the projection. Here is my code: # ...
0
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1answer
356 views

How to fix 'GeoSeries' object has no attribute '_geom'

I'm working on a python script whose goal is to detect if a point is out of a row of points (gps statement from an agricultural machine). To do this, my idea is to make a buffer around the 10 points ...