A geometric element defined by a pair of x,y coordinates.
3
votes
2answers
231 views
Housenumber(point) angle from line (street)
using arcgis 10 with Point data (Housenumber without angle attribute) and line data (street without angle attribute)
I want to create housenumber labels from point with correct angle from nearest ...
1
vote
0answers
213 views
ArcGIS10 Split Line at Point Failing due to Dataset size
Im having an Issue with my Split Line at Point tool. Seems to run if lucky for 700 entries before arcmap/arccatalog falls over. Debugging of the errorlog has produced nothing. The total size of the ...
1
vote
0answers
62 views
How to find locations on a conditional search
Hope you can help
I have a set of points evenly distributed to 500m intervals, and stored elevation.
I want to find from a given location any other point with the lowest elevation within a 1,000m ...
3
votes
1answer
931 views
Calculating distance to points in QGIS
Is there a way of calculating the distance to the nearest points in QGIS? In ArcGIS there is a function called Euclidean Distance, which can take an input vector or raster, and generate a raster of ...
2
votes
0answers
178 views
Updating SDE point feature classes with SQL SERVER 2008 R2
I am contacting you in hope that you can help me resolve an issue using SQL Server 2008 R2 to push updates to a SDE point feature class.
We are using a C# app that uses ArcGIS Runtime to edit the ...
4
votes
3answers
3k views
OpenLayers: Showing a WFS overlay on top of Google Maps
I have found similar questions asked previously, but I still fail to get a simple WFS point layer to work using OpenLayers and Google Maps. The original code I used was based on WFS polygon layers I ...
3
votes
2answers
2k views
How to use Distance Matrix tool in QGIS?
I have a point data set. Now there are cluster of points based on a field. So I take out one such cluster which has points with same field.I want to find distance between all the points in cluster and ...
1
vote
0answers
262 views
Error creating IPoint (ArcGIS 10) - Invalid use of New keyword (VBA)
I have some code I wrote in 9.3 that (mostly) works in version 10. I have a UIToolControl that buffers a user-input point based on a mouse click - nearly identical to the sample.
This used to work ...
4
votes
6answers
5k views
Points to Polygon
I've millions of points collected for lithology layer. They have used a coding for different types of rocks. I need to create a polygon around the extent of similar points. What is the easiest way to ...
2
votes
2answers
272 views
Setting up drawing order for point shapefile
I am having a difficulty with creating polyline feature from a point dataset that represents a boundary. This dataset consists of 5084 points which are randomly ordered. I have no Network Analyst ...
5
votes
1answer
2k views
Simple PostGIS ST_Distance query for two points from the same geometry table?
Note: This question was published at Stackoverflow at first.
I have a geometry table points_table with SRID 4326 and a few points in it.
I need to find a distance between a pair of points (features) ...
2
votes
1answer
339 views
How to create a efficent linestring out of geography points using postgis
I'm trying to create a linestring out of geography points. At the moment I'm doing it like this:
select ST_GeographyFromText(ST_Makeline(a.record_point)) from (
select (record_point::geometry)
from ...
3
votes
2answers
391 views
Total great circle distance along a path of points (PostGIS)
I am looking for an SQL query that sums the distances between a series of points using PostGIS.
The situation is as follows:
I have 2 tables: tracks and points.
Points belong to a track and thus ...
1
vote
2answers
1k views
How to create a graphic point by xy value?
I have implemented this code to create point event layer by xy text file, however I'm wondering how to create a point graphic by xy value?
This script draws point graphic by mouse down. When I ...
2
votes
1answer
1k views
Create point in intersections of two layers
I have two layers. One of them is 'Road_line' and another one is 'forest_shape'.
I want to create a point layer that has points in intersection of that layers. I couldn't find any tools for it.
Could ...
2
votes
1answer
1k views
How to find nearest point for each point in current layer?
I have a point layer and want to know the distance of nearest point of current layer for each point in the layer.
I found some tools in ArcToolbox about it , but they need two layers for input and ...
5
votes
2answers
583 views
Creating a line (closest vertex to line)
I am working in reorganising our utilities data. Only since two years ago, we have started collecting Water Private Service line. We still have a lot of them to extract from old Record Drawing.
...
1
vote
0answers
50 views
Point features disappear when adding new data
Recently while adding features to a point layer i noticed that once i had saved my edits the already existing points disappeared. Although not visable on the map all of them and their data were still ...
1
vote
2answers
254 views
Is there a way to have a single point feature with multiple records?
Is there a way to have a single point feature and have multiple attributes records associated with it? Multipoint approach won't work as it gives me one attribute set (database row). I am trying to ...
3
votes
2answers
958 views
How to easily enter a point feature in ArcGIS? (arcmap10)
My job requires me to enter point features into ArcGIS 10 which correlate to underground RFID markers that mark underground telecom infrastructure. Right now, the workflow requires someone to go out, ...
2
votes
2answers
2k views
How to automate point-in-polygon queries in ArcView?
Layer1 = point shapefile (multiple points, geocoded)
Layer2 = polygon (1 attribute; (1,2,3...))
I want a non-gis person to be able input a single address and be told the attribute of the polygon ...
5
votes
3answers
180 views
Methods for lat/lon quality control?
I have a database with fields including latitude, longitude, city, state, and country.
When mapped, it is clear that a number of the sites are in the wrong location - most commonly because of a sign ...
3
votes
2answers
474 views
How to loop through an array of point features?
I have a set of point features and I wish to find the points that have common coordinates. Now I changed the code as shwon bewlo by using the IPoint and the compare method through a function. I have 2 ...
1
vote
0answers
238 views
Moving GPS Points with a script - Bearing works well but distance is wrong
I am using a script I found online created in 2003 by one of the commentators here. It is a great script and exactly what I have been looking for and I'm very glad to have found it. It simply takes ...
5
votes
3answers
901 views
Easily find centre point of a raster in ArcMap 10 document?
If I have, say, a rectangular and georeferenced raster file loaded in an ArcMap 10 document (.tiff w/ associated tfw), how do I easily find its centre point and store that point in a points vector ...
7
votes
2answers
702 views
PostGIS raster value of a lat/lon point
I have a tiff raster in my PostGIS 2.0 database. I want to get the value of the raster at a specified lat/lon point.
I have:
postgresql-9.1
postgis-2.0-svn with raster support
a raster imported ...
2
votes
1answer
417 views
What are nodes in ArcGIS and how do you create them?
I want to create a elevation profile of a cross section so a polyline on ArcGIS. I wanted to regularly space around 1000 points per 1700m long xsection and extract elevation data for each node/point ...
6
votes
2answers
279 views
How to Match Point Data in QGIS?
Please, how do I match the same points (WGS84) in two different point layers? Like I want to get the points that lie exactly upon each other in the two datasets.
9
votes
3answers
2k views
What is quickest way to select polygon by point in ArcGIS 10 using ArcPy?
I keep thinking that I must be missing something, but there does not seem to be a tool in ArcGIS 10 to select features (in particular polygons) from a layer at a point (X,Y) location via ArcPy. The ...
4
votes
2answers
637 views
Problem creating a point IFeatureClass
I'm trying to create a point IFeatureClass, but my code doesn't work.
Public Function CreatePointFeatureClass(ByVal featureClassName As String, _
ByVal ...
6
votes
2answers
2k views
PostGIS: Find points that lie within a set of coordinates
I have a PostGIS db, and I want to find the points that lie within some region (a bounding box). I have two sets of coordinates, from which I can get all four rectangle points that form the box (if ...
2
votes
1answer
94 views
Access points with PostGIS
I have a PostGIS table with linestring geometries and point (A) on it and I need to detrimine points (M) which located M meters from A. Distance is measured along linestrings. Any thoughts?
2
votes
2answers
162 views
Stacked point representation in KMLs
I cross posted this in the Google Earth forum but they changed the format there and I'm not sure I like the format.
In my dataset I sometimes have multiple locations at a single point.
GE will ...
10
votes
3answers
2k views
How to join attributes from nearest point in QGIS?
I have two layers with points, call them A and B, each with different attributes.
For each point in A I want to join all the attributes from the nearest point in B.
Ideally this would also include ...
1
vote
2answers
900 views
Select points within a given distance from a selected point
What I want to do:
In ArcMap, let the user select a point (not a point pre-enter) and enter a range (like a Message BOX can enter range)
the point (pre-enter the data and XY) within range will be ...
4
votes
4answers
909 views
How to determine a point lays within a polyline in arc engine?
I recently asked a similiar question on this, however I needed to know if there is a way to solve this if I only have a IPolyline Feature, and not the whole layer.
I want to know if I can determine ...
4
votes
2answers
393 views
Does anyone know a function to determine if a Point lies on a polyline?
ArcEngine 10 .Net 4 c#
Hi I'm currently allowing user to select a point on a polyline and creating a point on the line. I am using snapping tool.
I just want to make sure that when the user clicks ...
4
votes
2answers
1k views
How can I compare two point shapefiles that contain lat/longs and compute distance?
Greetings everyone, I have 2 sets of point shapefiles in ArcGIS (group A and B), each set has around 1000 entries that contain lat/long. What I want to do is compare Group A against Group B and figure ...
7
votes
8answers
10k views
In arcgis 10 how can I turn a csv file into a point shape file using lat/long data within the csv?
Greetings everyone! I have a csv file that is 133mb in size and has over 1.3 million lines of data. Each line of data has its own lat/long and I was wondering what would be the best way to display ...
2
votes
2answers
597 views
script to create points in interval 0.125 decimal degree
Hi:
i have a polygon shapefile . i want to create points in interval 0.125 decimal degree in this polygon . how can i create a script with python in arcGIS 10 to automate process of create points ? ...
2
votes
3answers
3k views
Change number of decimal digits for features in ArcGIS 10?
I am editing vertices in polygons and points in ArcMap 10, and realised that they only hold 3 decimal digits for the X, Y coordinates, but I would like at least 6 decimal digits. Even if I type in ...
6
votes
3answers
713 views
Converting point data into a weighted raster
I am completely re-writing my question as i think it was quite confusing before:
I have a number of different points, each point has a -z value.
I need to create some sort of raster or a series of ...
1
vote
2answers
1k views
Hyperlink relative paths to files in points layer in QGIS?
I would like to add hyperlinks to each point in a points layer in QGIS 1.7.0 running on Mac OS X 10.6.7, but I have several requirements:
(1) Each hyperlink has to be a relative path to the linked ...
5
votes
3answers
2k views
Is there a way to label points in a regular interval in ArcGIS 10? [SOLVED]
Estou trabalhando com linhas em estradas representadas por uma grande grande quantidade de pontos em sequencia.
Uma vez que colocar o nome de todos os pontos tornaria a identificação impossível, ...
1
vote
0answers
241 views
getting the correct location data with user input
I have some code others have provided, which I modified in order to run a Python script in a toolbox in ArcMap which accepts user input for a starting point, distance, and angle to create a shapefile ...
2
votes
1answer
4k views
Export list of coordinates in a points layer to spreadsheet?
This is similar to my previous question, but I would like to ask it for ArcGIS, instead of QGIS. If I am supposed to somehow merge the questions, please let me know.
With an existing point feature ...
11
votes
5answers
9k views
Get list of coordinates for points in a layer?
I've got a layer in QGIS that is comprised of points. Its attribute table doesn't have the corresponding x y coordinates for each point. Is there a way for me to extract a list of coordinates for ...
1
vote
2answers
524 views
Error adding buffer to polyline in ArcMap 10
As the next step to what I did in this previous question, I would like to add a buffer to a polyline, with 5 meters on either side.
I tried adding buffer to two versions of the line, one in ...
4
votes
5answers
13k views
How to connect points with a polyline in ArcMap 10?
I have a layer containing a few hundred points representing a survey track. The points are laid out in chronological order in the corresponding attribute table.
How can I have ArcMap 10 automatically ...
5
votes
2answers
1k views
Creating evenly distributed points within an irregular boundary
I need to create an evenly distributed series of points within a series of oddly shapped polygons (formerly squares, but now squares with donut holes).
The way I have solved this problem so far is to ...
