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

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3
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32 views

Action: Move pointfeature to other layer - Point becomes Multipoint

I'm trying to write an action that moves a pointfeature from one layer to another. It works fine until i try to save the layer with the new feature on. He says he can't save a MULTIPOINT to a ...
3
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107 views

Geoprocessing tool for finding specific point within polygon

I have a ArcGIS task and cannot find a solution. I try to find a certain point within a polygon (see picture). This example is handmade and I need a geoprocessing solution I point I try to get is ...
3
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417 views

How to Batch Change X, Y Coordinate Number in ArcGIS?

I have a huge number of points (100000 points). Some of these have the same x,y coordinates. For example, 50 points are same in x,y then 100 points are same in another x,y coordinates and so on. ...
3
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0answers
78 views

Adding points to represent non-chosen locations

I am looking for a way to set up a discrete choice model in ArcGIS for foraging behavior of individuals, in a grid of 15 locations. To do that I need a point for every possible choice they could have ...
2
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0answers
52 views

“Geometry cannot have Z values” exception in ArcGIS Engine

I'm trying to put a list of point features (selected points) into a new FeatureClass. but when I add them to my FeatureClass I get the "Geometry cannot have Z values." exception on the line ...
2
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0answers
31 views

How do Wikipedia maps add a coordinate point to a base map?

On wikipedia pages for localities, there is often a map on the right side of the page in the introduction, and the map is tagged with the point of the locality. For example, see below: ...
2
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49 views

Equal distance points on polylines

In QGIS 2.10.1 I want to create a point layer out of my polyline shapefile and all the points shall have a fixed distance (in meters) while I use WGS84 as coordinate system. So what do I use for this? ...
2
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66 views

Interpreting results of QGIS intepolation and Heat map from point shapefile

I have taken a step interpolation and heat map of the data point shapefile (building Centroid) with QGIS ver-2.8.1, as shown below. My question are: What is the difference of the two methods? How ...
2
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182 views

Get Distance between two point on linestring using mysql Spatial

I have a linestring and two point on this linestrin according to my picture i want distance between two point as base of linestring please hellp me
2
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114 views

How to Interpolate very large datasets in QGIS?

I am working with a very large set of point data, (XYAttribute) which I wish to display as a raster. I've been using Interpolate, this is successful but very slow. I have other programmes that ...
2
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0answers
46 views

Extracting outtermost points from a irregular grid of points

Good day to all, I am using Arcmap 9.3, and would like to remove all points inside an irregularly placed grid, except the outermost (boundary) points. For example, I would like to keep the black ...
2
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74 views

How to show coincident point with different symbology in webgis?

our team have develop an webgis using ArcGIS silverlight API 3.1 .we have some points in database.These points are save in a table in sql server 2008R2 not in Geodatabase.The points have same ...
2
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73 views

What is an Orphan point?

MY apologizes about the next doubt, but I can't understand what is an orphan point. I am using QGIS with a module to apply the Linear Reference System (the module is called "LRS"). During the ...
2
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0answers
49 views

Update PG table setting an area_id

I have a table with lots of points which I'd like to update and set a consecutive area_id to every point "group". I define a point "group" as points that are within a 500 meters radius. The raw table ...
2
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0answers
264 views

Divide polygon layer by point layer in QGIS?

I have two layers - one polygon layer that is a buffer of a road layer, and one point layer that shows certain locations along that road. What I want to do is to divide/split the polygon layer at the ...
2
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642 views

cant find point/polygon intersect using qgis (windows only)

below i describe the method i am using. i have 2 machines: 1 ubuntu linux, qgis 1.4 - intersection works 2 WIN xp, qgis 1.8 - intersection dows not work hopefully, someone will ...
2
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0answers
159 views

How does integrate work with point data sets?

I'm trying to combine point data into clusters and I think I've come up with a method that will work for what I want to accomplish. However, I don't understand why it works the way it does and I'm ...
1
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0answers
15 views

Colliding labels for point features in QGIS

I have a layer (point features) containing various points of interest (POIs), some of them have the exact same location. I would like to map these POIs and add a label showing their names. However, ...
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13 views

How do I generate a sampling path by numbering points?

I need to number points from left to right and then the next row of points the numbering must continue from right to left, then again from left to right the row thereafter - and so on, and so on. ...
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25 views

Extracting distances along a line from postcode a centroid to the nearest point (bus stop)

I'm looking to measure the distance from postcode centroids (point file) in a city to the nearest bus stop (point file) along the road network (line file). In Qgis I can calculate the distance but ...
1
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0answers
29 views

Point and Polygon Data refusing to display: corrupt data?

I have two sets of shapefiles, one point data and one polygon data. Both were sent as part of a bigger set of data. Neither the point or polygon data will display when loaded into QGIS. The raw data ...
1
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0answers
20 views

Specifying rectangle symbol with height/length based on attributes values in mapfile?

I need to specify a rectangle symbol in a mapfile. The symbols should be of varying dimensions based on height/width values stored in a table's attributes. Is it possible to do something as with the ...
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0answers
29 views

Distance Analysis from single point to multiple points on vector layers

Is it possible to do the following in QGIS: Create a text file that plots the distance from a single point (stored in one layer) and multiple points (stored in another layer). I have tried to use ...
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51 views

need to split some linestrings by points

please help me, i'm new in gis 1) i have а table with geom railways, which are multilinestrings (for example there are 2 ways one of which is interrupted, so this way will be multilinestrings ...
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56 views

Error in Editing Point Shapefile: I can't add a new point feature

I want to add a point to a point shapefile. I place the cursor in an empty field. The strange thing is that the point of the point shapefile that is nearest to the cursor is highlighted. If I click ...
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100 views

GeoSever PointStacker Renders incorrect position

I've been trying the GeoServer Rendering Transformations - Point Stacker. According to this docs there's an optional cellSize parameter for setting the "Size of the cells in which to aggregate points, ...
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49 views

Assigning Raster Cell data to Point data

I have 23 sets of raster data for different types of habitat (which I have performed Block Statistics on in Arc10.2, in order to create a 1km grid). I also have 5 different Sets of point data showing ...
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91 views

ArcMap Point Distance giving decimal degrees even when in projected coordinate system

I'm trying to calculate pairwise river distance among 60 XY coordinates in a small region of Mexico with ArcMap 10.2.2. I have defined my projections and projected both my stream network and XY ...
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0answers
59 views

Getfeatureinfo is not working with geoserver point line sources

I'm not able to get information with Getfeatureinfo when clicking on point & line layers. For polygons it works fine. I'm using the code below to execute the WMS service: google.maps.event ...
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44 views

Splitting up a single polygon into many polygons of equal point count

I have point data split into 15 different values and want to split up the (green) polygon into a number of smaller polygons each containing the same number of points so that I can make a chloropleth ...
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0answers
70 views

Point to raster: QGIS vs ArcMap

I have an equidistant point grid (0.5m) and created a raster from it in QGIS and ArcMap, with different results: QGIS: Raster -> Conversion -> Rasterize Result: raster, with points in the top left ...
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0answers
58 views

Why does the “local maxima” module in SAGA GIS put so many “maxima” points on lakes and plains?

SAGA GIS puts too many maxima points on plains and lakes. Why does it happen? Is there a way to avoid this? It's not really a big problem (the value is correct) except for the size of the SHP files in ...
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26 views

To filter the wrong data of point positioning

I have collected GPGGA data by Novatel OEMV receiver in static single point mode. I have so much data (GPGGA format) and I want to get the static point axis by averaging all data. But some of the data ...
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48 views

Sample points based on underlying polygon attributes

I have a point shapefile and I would like to sample those points (just like the "Sample" tool allows points to sample underlying raster) to receive a table with underlying polygon values (interested ...
1
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0answers
142 views

How to calculate the average point spacing for a layer of points in QGIS?

I have a set of points and want to calculate the average point spacing for further analysis. ArcMap has the 3D Analyst Point File Information for this but I'm searching for an alternative in QGIS. ...
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0answers
95 views

Loading lots of points on leaflet through time slider.

I'm trying to add more than 13 thousand point using Time Slider plugin, but as you can imagine the loading process of all these points puts a heavy burden on the map. Even the slider start to get ...
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0answers
83 views

3d model to point cloud

Excepting FME, is there a way to convert 3d model to point cloud?
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0answers
97 views

Geotagging photos with Point Shape via Time Stamp

I have waypoints which I marked with a gps device - unfortunatelly no track/route. And I have photos which I took at the same day. Now I want to interpolate the points to line and use this line to ...
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0answers
79 views

Creating one dataset from several overlapping point datasets using ModelBuilder?

I am trying to build a model in which I create 9 point data sets that are subsets of one large point data sets. The 9 small point data sets are suitability analyses for tree species. So one point can ...
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0answers
51 views

Calculate Sum on One Field Within Several Different Point Feature Classes?

I have several point feature classes (eg: the location of mall, liquor stores, etc), that I need to get the count of within a specified city district. Basically, I want to great a modelbuilder model ...
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0answers
45 views

River flow downhill

I have polylines (rivers) with assigned elevations. I need to ensure they are flowing downstream and indicate which vertices are incorrect. I do not have 3D analyst, spatial analyst, or network ...
1
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0answers
62 views

“Points To Raster Tool”- Output pixel values differ from original point values

I am trying to convert an evenly spaced set of points to a raster using the "Points To Raster" tool in 10.1. Problem: Generally, the raster makes sense, but in some areas the cell values differ quite ...
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153 views

How can I find which point is furthest from something?

Here is an example of what I am looking to do: Which town in South Dakota is farthest from a Hospital? Which tool would I use to be able to do this?
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46 views

How to get attributes from line-polygon where points are snapped on, into the point-layer?

I have a SQL Server spatial table with point-objects, the points are set by snapping onto a line SQL Server spatial table. so the points are georeferenced on the line. How can I get the attributes ...
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0answers
54 views

Using Geoserver

I am new to GIS and interested in using Geoserver. I have had a look at tutorials and read some books on this but still feeling clueless. I intend to use C# to accomplish some tasks eg, plot points on ...
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0answers
248 views

OpenLayers - Add points at vertices of line while drawing line

I would like to create points while I draw a line on my map in OpenLayers. That is, at each vertices of a line and at the end points there is a shape like a square, circle, or diamond. I have this ...
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0answers
77 views

Authoring map with advanced gradient symbol for ArcGIS web service?

I need to prepare a web service which will display the gradient of polygon points values. It has to look just like in this picture: link to the picture (please ignore the arrows). Each polygon is ...
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0answers
733 views

Splitting polyline by points using ArcGIS 10.2 for Desktop?

I have a layer containing a curved polyline and I would like to split it at multiple point locations, which I have in another layer. In ArcGIS 10.2, I can do this with the tool "Split Line at Point". ...
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0answers
39 views

Creating contours from partial data set

Is it possible to create contour lines based on part of the points and not the entire dataset?
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0answers
75 views

Geoserver-WMS-problem when zooming point layer

I need help. I would like to have no blank(white) space between points when zooming in WMS geoserver. Any idea? Greetings, Andrew