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Questions tagged [point]

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

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0answers
31 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 ...
0
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0answers
31 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
18 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
35 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 ...
1
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1answer
28 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 ...
7
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2answers
152 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
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1answer
38 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
13 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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1answer
38 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
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1answer
39 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
27 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? ...
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0answers
24 views

Add points to existing polygons

Is it possible to create points which are automatically created on existing polygon? Just like in the following picture
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1answer
37 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
134 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
53 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
31 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
54 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 ...
0
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0answers
13 views

How to connect point layers through their attributes/relations?

I have a project to use QGIS to track fishing activities (product goes from boat to fisheries to processors to factories...). All layers have coordinates and I managed to map them but now I´m trying ...
0
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2answers
50 views

Find closest point using L.GeometryUtil.closest and open its popup

How do I use: L.GeometryUtil.closest(myMap, coords, b) to find the closest point in a geojson point layer in leaflet. I have tried several things. And the error I receive is: Uncaught TypeError: ...
1
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1answer
41 views

QGIS: Placing points relative to a specific coordinate

I have some delimited-text point data that is encoded as X,Y positions relative to a given coordinate. So, for example, 1 5 represents a point 1 meter east, five meters north of the origin coordinate. ...
0
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0answers
30 views

Create Line inside the lake in ArcMap?

I am trying to find shorthest path between multiple points. I am using new route under Network Analyst in ArcMap. But, if there is no road between points due to lake or sea, how can I find shortest ...
1
vote
1answer
94 views

Determine on which side of a line points are located

I have a point shapefile (point.shp) and a line shapefile (line.shp). I want to determine on which side of the line each point is located. The best would be to use a pyqgis command to add a field to ...
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2answers
36 views

Point Sampling Tool pyQGIS

I have several raster files (raster_1, raster_2, [...], raster_n) and a point shapefile. The point shapefile (point.shp) was created using "generatepointspixelcentroidsinsidepolygons" so my points are ...
1
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1answer
53 views

Creating a “catchment area” geometry from place points in QGIS

I have data from Geonames.org on the location of population centres, provided in the format of Center Name, Latitude and Longitude. Only one latitude and longitude point is provided for each ...
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0answers
18 views

Match Points with Nearest Routes?

I am using new route analysis in ArcMap. I am trying to find shorthest route between multiple points. Some of the Points are not on the route, see green example in the picture below. I am trying ...
0
votes
2answers
54 views

How to densify point feature class in ArcGIS?

I have a 3D (x,y,z) single point feature class which points are equally spaced, like this: As the distance between each points are more than one meter, I was wondering if there's a possibility to ...
3
votes
1answer
152 views

Projecting points on line and calculating distance from line start

I have a vector layer with a number of points which correspond to magnetic targets axis retrieved from AutoCAD The task is to project the points on the axis and then calculate the distance of each ...
2
votes
1answer
31 views

Distance from edge of each polygon to nearest point, such that points within each polygon aren't included

Using ArcGIS 10.5, I have a cluster of polygons that represent districts (together this cluster of polygons creates a nation). I also have thousands of points that represent offices. I would like to ...
1
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1answer
60 views

Displaying overlapping points in QGIS?

I am trying to produce a map of last years emergency responses in my area in 2018. I am entering a CSV file into QGIS which is working fine. The addresses and Lat and Long have been verified. I ...
2
votes
1answer
44 views

Method to convert all 'overlapping' points to exact same geometry in QGIS 3.4

I have a point vector layer with approximately 2.5 million points, many of which share the same or a very similar geometry (within 1 m of each other). I would like to know if I can bulk amend the ...
1
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1answer
34 views

Automating point feature class placement inside polygons using specific parameters?

I am trying to generate a point feature class of possible plot centers for a research project. The plot centers will be inside of defined forest stand polygons which are aggregated in various ways ...
1
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0answers
41 views

Calculating distances from one reference point to multiple points in one shp file

I am a total novice to GIS; I read some of the answers to similar posts, still have difficulties to do it. I am not that familiar with GIS or QGIS and am looking for a step by step approach. Here is ...
0
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0answers
35 views

Which label from different points inside a polygon is the most repeated

I have millions of points, each point with a label. These points are inside of different buffers (polygons). I want to create a new column that puts the value of the label that is repeated more time ...
0
votes
1answer
59 views

Combining points close to one another

I need an approach to combine points close one to another into a common point. I can take an average of points' {lat, long} to create one point. How I can do this with ArcMap or Python? I have an ...
1
vote
1answer
27 views

Selecting Different points in 2 different layers

I'd like to make an analysis on points. I've 2 layers they have house numbers as an attribute. What i'd like to do is compare these 2 layers and select the different ones. Geometrically there are ...
0
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0answers
27 views

QGIS spatial sampling tool for existing points within a polygon ensuring even spread

I would like to spatially sample 10 existing points from within a polygon. I have read the answers from "QGIS point sampling tool really slow for polygons?"; "points within a polygon" as well as "How ...
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0answers
49 views

How to create one grid from specific set of points using QGIS?

I need to create one grid/fishnet from a set of points (coordinates). I tried to do it with the point to path tool following this three steps: 1-Vertical's rows: I numbered the points in the ...
1
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1answer
39 views

QGIS raster color selection

I'm working with a raster map that looks like this: Do you know any way to select the red/blue spots or ideally put a points on them? I've been browsing web and qgis help for a while now, but I haven'...
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0answers
37 views

How to add date to point?

I have a lot of points with a GPS tracker and I need to simplify them. I create view (location_view) in PostgreSQL (with PostGIS): SELECT location.id, location.added, location.latitude, ...
1
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1answer
42 views

Projecting shapefile of point geometries?

I am trying to creating a point shapefile that lies within polygon(a feature layer). By creating point geometry objects and filtering the ones that fall within the polygon(feature layer), I created a ...
0
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0answers
12 views

Counting Number of Defined Grid Points in a GRIB2

I am looking for a way to count the total number of DEFINED grid points in a GRIB2 file. I am aware of the -npts option in wgrib2 but, this includes both undefined and defined points. I am looking ...
4
votes
0answers
49 views

Display map tips of superimposed points [closed]

I have created a tabular listing of selected attributes in QGIS as map tips via HTML script. Unfortunately only the information of the uppermost point is shown. Is there a possibility to display map ...
2
votes
0answers
43 views

Creating points with linear referencing

I have traffic data that shows tracks that have start and end times (in YYYYMMDD-HHMMSS format) and the speed (m/s) the vehicle was moving. From that I've calculated total traveled distance (m) and ...
0
votes
1answer
38 views

QGIS Join vector point into polygon's

I have groups of vector points (GPS points) in a number of layers in QGIS. I would like to connect the points in each layer into polygons in each individual layer. I have look hard, but can not find ...
2
votes
1answer
58 views

Distance betweeen classified Points

I got two sets of points. The first set has a unique ID The second set references to this ID (one-to-many). So I merged the two sets. Now every point in the joined table has the X and Y coordinates ...
0
votes
1answer
84 views

how to get first and last point of MultiLineString-objects in qgis3

i would like to identify the start- and endpoints within a set of polylines and return the coordinates of both points finally. so far i have been able to iterate the features and found out that ...
4
votes
1answer
48 views

Changing the coordinate value of a Pointz object with python

How can I change the X,Y or Z value of a Pointz feature with python in QGIS? I am trying to change the Z values of Pointz with a python plugin. I am first trying to pass the selected feature to a ...
1
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1answer
217 views

Create geometry from point data - QGIS 3.4.1

Is there an efficient way to produce geometry from point data using QGIS? Each point represents a feature that may require one or more geometric primitives such as circles, curves or polylines (open ...
1
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1answer
37 views

Random Point generator - same every iteration? (ArcGIS 10.3.1)

I am generating random points to sample within a stratum. Data Management Tools > Feature Class > Generate Random Points This works just fine, except that I noticed the points I generated for ...
0
votes
1answer
50 views

Count number of points on a line in R

I have a SpatialLinesDataFrame and a SpatialPointsDataFrame. I want to calculate the number of points that fall on a line by a specific field in the lines data frame. Example: I have a river network ...