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

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1answer
21 views

Assigning irregular points to a grid and assigning grid number as attribute

I have a large point data set that has irregular geometry (random sampling) that I want to bin in 2D XY space. I've attached a sketch below to illustrate what I mean. Apologies for hand drawing, hope ...
0
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3answers
58 views

Create continuous raster from point values in 10.1?

I have a point dataset of nearly 400 points containing percentage values the point is representing Is there a way to create a smooth continuous raster surface across the whole of the UK of the point ...
0
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0answers
23 views

Is there a way to combine clusters of points into one point?

So I have a large point dataset, and need to put buffers around the points. However some of them are too close together (the buffers overlap too much), and so I'd like to combine all points say within ...
0
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0answers
28 views

Determining point distance along river in ArcGIS?

I have two sets of data: River networks -> line data Fish movement data -> points along the river Is there any way to calculate the distance between the points along the river distance, which is ...
0
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0answers
18 views

Comparing multiple point datasets to polygon dataset?

I have multiple point datasets indicating presence absence and i want to compare them all to a polygon dataset to calculate cumulative score for the polygon i.e. presence of points in 2 point datasets ...
4
votes
2answers
160 views

Convert vector point data (shp) to raster (tif) using QGIS

Overall Question: How can I get the rendered tif image to keep the modifications seen in the image produced by map canvas? I am writing a standalone Python script. I have simplified my code below ...
0
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2answers
33 views

Points not displaying in feature class in file geodatabase

I was working with shape files when I recently decided to put all my shape files into a single file geodatabase. I just tried to add some more points to the feature class by inputting the coordinates ...
1
vote
1answer
58 views

From a lat/lng point, load data clusters of other lat/lng points within radius using PostGIS

Very similar to how Zillow's mobile app mapping search works, I'm trying to pass in the lat/lng points & radius (meters) of a single user and then, on the fly, generate clusters to enable passing ...
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2answers
32 views

How do I convert a fire frequency point shape file into a fire frequency raster?

I have a point shapefile that I want to convert to a raster image using ArcMap 10.2. The shape file has a number of points on top of each other. Each point is a fire. I want to make a fire frequency ...
1
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0answers
25 views

How to interpolate a set of waypoints?

I am trying to interpolate a Vector Layer in order to have as many waypoints as possible. I am doing it with the Interpolation Plugin, but I don't know what to do with the Raster Layer generated (I ...
1
vote
1answer
24 views

Generating points along perimeter of circular feature in ArcMap? [duplicate]

How do I generate equally spaced points on the circumference of a circular feature in ArcMap? I am currently working on a project where I need 36 equally spaced UTM coordinates that form a silo.
1
vote
3answers
87 views

Convert raster to a CSV values and lat long based on raster value in QGIS

I am looking to convert a raster into a csv file (or tab delimited) based on values in the raster (Value > 0). The csv would have three values, latitude of center of cell, longitude of center of cell,...
1
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0answers
15 views

QGIS Point Features and Labels Not Appearing in .KMZ/Garmin

I want to produce a Garmin custom map for use with my Etrex 20x. I'm working with QGIS 2.14.3-Essen using the GarminCustomMap, version 1.1, plug-in to produce the output .KMZ on a Mac running OS X ...
0
votes
1answer
33 views

Single point creation

I am using arcpy.CopyFeatures_management(pointGeometry, "output") to create singles points. Is it possible to create those single points on an existing output without deleting the output before the ...
1
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0answers
20 views

QGIS Points to path using

I've one question or maybe two about Points to path in QGIS. First, I present my case: I have to do "travel paths" from one address to another address. I have a database - example: How I should ...
0
votes
1answer
22 views

how to create a grid - create a line of points - in ArcGIS 10.2

I would like to create a line of points spaced at 1km intervals along each of the four edges of my DEM, I was wondering whether there is a way to do this automatically in ArcGIS 10.2 and if so, how ...
1
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0answers
24 views

I am trying to have markers in a KML to follow the direction of the view in Google Earth

I am trying to represent the flow direction of streams in a KML file to be used in Google Earth. As complex line symbols are not supported by the KML format, I have opted for a solution combining ...
1
vote
1answer
26 views

Merge vector points with point name into field name ArcGIS

I am merging several points gathered on GE, after converting kml into a shape file. I would like to have in the output file (merged) a field indicating the filename of the corresponding source ...
1
vote
1answer
39 views

How to select first coordinates in multipoint or in collection used for point reducing?

I am using PostGis and I have geometry like this: MULTIPOINT(1673118.56314624 5778263.30559826,1672914.41092247 5778129.131443,1672384.7731665 5778105.44570288,1673513.70724225 5778525.74090022) ...
1
vote
1answer
48 views

Comparing point pattern and raster data?

I have a simulated data set showing distribution of a certain habitat type as a point pattern. Then I have a empirical data set but there the format is raster. The two datasets are covering the ...
0
votes
1answer
15 views

How to discard sites when there is overlap between buffers?

I have 1,000 sites in a landscape that were sampled along a road. However, I think my sites are too close together. A lack of independence between my sites many be influencing my statistical models. ...
0
votes
1answer
34 views

How do I make two layers of point data align perfectly?

I have two point data sets that represent the same business locations, however, the points are slightly off for one of the two layers. As in one layers points are in the correct position over the ...
1
vote
1answer
36 views

QGIS- extract raster information into a point return nulls

I have a 1) raster layer and a 2) point layer. I want to extract the pixel value to each point, but it is not working when using this tools (QGIS): plug-in "Point sampling tool" (the new shapefile ...
3
votes
4answers
138 views

Tool to delete too many points in one area, ArcGIS, ArcMap

I have two layers: points and areas (buildings). In many places I have two or three points in one building. I would like to leave only one point in one building. How can I do that?
1
vote
1answer
19 views

saving a SVG marker to a layer for sharing

I have a layer which consists of point data. I have switched the symbology of the layer to a svg image that I loaded in. To maintain the symbology I went to LayerProperties>style and then i saved the ...
0
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3answers
40 views

Tool to find the nearest points in one layer, ArcGIS

How can I find nearest points in the same layer in ArcMap? I would like to find points that are in the distance of less then 0,5m.
3
votes
1answer
48 views

One attribute category defines colour, another attribute category defines shape

I want to set the point colour to be defined by one attribute (Lithology), and the shape to be defined by another attribute (Qualifier). For example, Lithology (RH) = Yellow, Qualifier (CR) = Square,...
1
vote
1answer
40 views

How to extract values from a raster stack within overlapping buffers?

In R, I have a raster stack with 6 variables. I would like to extract the mean and maximum value of each variable at 300 coordinates within a 500m buffer radius and a 1km buffer radius. In ArcGIS 10....
1
vote
1answer
73 views

Select points based on value and proximity

I have a set of points in a table, each has a value between 1 and 100. How could I reduce this to the point with the highest value within a radius distance X. So that no point is ever closer than X ...
1
vote
1answer
38 views

Move feature(s) causes points to be duplicated in QGIS 2.8.9

I have a point shapefile in QGIS where I am manually adjusting some of the points due to overlap. I am using Toggle editing --> Move feature(s) --> Save for all layers. Instead of moving the points ...
0
votes
0answers
23 views

Autopopulating point combobox using ArcPad?

Using ArcPad, I am capturing points that reside on a number of polygons with different asset IDs. How can I automatically populate one of the point’s comboboxes with the asset ID of whatever polygon ...
1
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0answers
28 views

Change point symbol to surface, Arcgis 10.2.2 [closed]

i would like to ask how can i change a point symbol to a surface. I have the capital city (point symbol) and i want to make it surface, for better cartographic reprepsentation. Im using ArcGis 10.2.2.
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votes
1answer
26 views

How do I make a grid around all my points, and then convert it to a polygon [duplicate]

I want to make a grid around all my points, convert to a polygon and use this to clip the extent of my data. I am using Arc 10.2. How do I make a grid and then convert it to a polygon? Or is there a ...
1
vote
0answers
17 views

Create a correlation between different point dataset

I have different point data-sets in my map in ArcMap, but I am wondering if there is an tool in ArcMap that can analyze the correlation between the different data-sets. Specifically, I need to know ...
1
vote
1answer
47 views

Point buffer not round - jagged circle like thing

Any ideas why running a point buffer (50 and 150 meters) would result in this shape? ArcGIS 10.2 - All projections match
1
vote
1answer
111 views

How to add X/Y coordinates and count of overlapping points in a postgresql table?

How to add to my postgres/postgis table the following columns X coordinate | Y coordinate | count (number of points in same location) from an existing table populated with geometries type POINT
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0answers
34 views

Wrap the set of points to the minimum polygon

Given I have a set of points which represents the circles which are intersected. As result I'm trying to receive the boundary which represent the polygon which wraps all circles. Please take a look ...
8
votes
2answers
208 views

Automatic numbering of points during digitization in QGIS?

Does somebody know how to automatically number the points during digitization in Qgis. To explain, when I create the new point there is the window where I must to type the point number. Is there any ...
0
votes
0answers
24 views

Drawing line and finding bearing using ArcGIS for Desktop?

I need to draw a line from a point within a polygon to the edge of said polygon. I do not need to know the length of the line, only the bearing (in degrees) for the line. We are using ArcMap 10.3.1
1
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0answers
48 views

QGIS point displacement does not work as intended

Maybe I made a mistake, but I can't get it working. I have a CSV file with species-sightings and lot of them at the same locations. So to show all species I need to use point displacement. If I choose ...
1
vote
1answer
28 views

Verifying whether point lies on line or not when both given in GCS?

Googled and tried to look on Esri's forum but couldn't get anything. Rather got things which were verifying if the point is within a polygon or not. But I want to know, if I have starting point and ...
2
votes
2answers
39 views

Reducing number of attributes (classes of marks) in marked point pattern using R?

I have a marked spatial point pattern loaded in R (from Shapefile). This dataset has 4 different "classes" of marks: class A, class B, class C and class D. Each class of marks is categorical. One can ...
1
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0answers
53 views

how to create a grid of points within an irregular polygon with the maximum number of points?

I usually use qgis and arcgis. I need to create a grid of points within a polygon with the maximum number of points. I also need to set the grid parameters: x distance, y distance, offset from the ...
0
votes
0answers
14 views

How to statistically compare a point pattern to a model?

I have a point pattern which represents the damaged buildings following the earthquake. These data were created by online volunteers therefore I want to examine it's possible quality. Since there is ...
0
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0answers
25 views

How to define a study area for Ripley's K analysis?

I have a spatial point pattern which spans across multiple districts in the country. Now I want to examine its pattern using Ripley's L function. I know that Ripley's L function is used for ...
2
votes
2answers
28 views

Render rotated symbols in Leaflet

I have point with an attribute for each point's 0-360 direction. I need to render these points in Leaflet with arrows pointing in their respective directions. Is there a plugin or code I can use to ...
3
votes
1answer
66 views

Select by expression and remove points

How do I select points by expression and delete these selected points? Is it possible to do this inside the modeler with a tool? The selection by expression works fine but do I have to set all the ...
0
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0answers
25 views

What is the approach for comparison two spatial point sets on the global scale?

I have to point sets, both of them dispersed over my study area, which counts several districts. Now I want to find a way how to compare them between each other using spatial statistics on a global ...
1
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0answers
49 views

Algorithm to simplify a Polygon/Series of Points to a given number of Points

I have a polygon (or let's call it just a series of points). I want to simplify it (reduce the amount of points) to a given number of points. Currently I use Douglas Peucker and try to guess the ...
3
votes
0answers
30 views

Loop distance point pyQgis

I have a .shp of lines where I'm able to calculate the sum of segments length but I'm trying to put a point at a given distance in meters. The problem is it puts a point at every segment. When I give ...