A representation of a real-world objects on a map.

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21
votes
5answers
10k views

What is difference between map layer and spatial dataset (e.g. feature class, shapefile)?

This may be very trivial question. To me they seems very similar in concept. What is the difference between feature class and feature layer?
2
votes
0answers
97 views

Is it possible to lock a single feature from editing in ArcObjects?

We're developing an ArcMap addin. Now we need a way to lock a feature from editing/deleting. Is this possible with ArcObjects or do we have to create our own implementation of locking? Example: User ...
1
vote
1answer
1k views

Delete SDE feature class features with ArcPy

I'm working on a script that will empty my SDE database of all data. How would I go about deleting features from feature classes using ArcPy? I have an SDE connection created with a user that should ...
4
votes
1answer
1k views

How to integrate OpenLayers and ArcGIS Server?

I am using the OpenLayers JavaScript API within a web application. I am displaying non-base layers hosted on an ArcGIS server. When I load the ArcGIS layers, I load them using ...
1
vote
4answers
6k views

Cutting features in ArcGIS 10

What´s the easiest/smartest way of getting the opposite output of the clipping tool? I just need the area of feature A1 which is not covered by feature A2 in a new Layer/File. Now, I get the result by ...
2
votes
1answer
505 views

editing existing lines

I have a quick editing question. I have a main line (street) from which I want to extend other small lines to reach some points (manholes), but I want to keep just one feature (the main line). I ...
5
votes
1answer
2k views

OpenLayers Selectfeature get mouse position

I'm have been searching for several hours and do not find a way to get mouse coordinates after a SelectFeature, which returns the feature by itself. I saw that this has been asked several times ...
2
votes
1answer
316 views

How to query OSM tags by polygon?

I do not know whether something like this is possible but nonetheless. If I understand OSM correctly all objects essentially have associated tags based on type of object (street, building etc) ... ...
4
votes
1answer
466 views

Need to delete all but one feature from a set of features with the same ID, keeping the one with the largest area

I have a large polygon layer in which most of the polygons have a unique name in a text field. Of the hundreds that aren't unique, there will be 2-4 polygons with the same name but different ...
5
votes
5answers
454 views

Where to find a list of geographic 'objects'?

Is there an extensive list of geographic "objects", "entities" or "features" that can be discovered in the geographic environment, relatively static and therefore can be geo-located and represented on ...
2
votes
2answers
301 views

How OpenStreetMap data layer works?

OSM map has a data layer and an information panel. How is it implemented? What is a type of the layer and URL of vector data source? How information panel works? Thanks for all!
0
votes
1answer
272 views

Simple Features and ArcGIS Domains

I am working with a number of detailed ArcGIS Geodatabases with domains used to enforce specific workflows, etc. This is all good and great, but I would like to move my data into either a ...
1
vote
2answers
102 views

Split a Quad to 1:7,500 Question

Here I have 1:24,000k quads. I know how to use the word split toolbox. What I would like to split 24,000K to 1:7,500 or 6,000k. Is there a way around for me to do that ? For example,, if you have one ...
1
vote
3answers
673 views

Finding X, Y of nodes in feature layer

I have a map document in ArcMap and I want to find X and Y of my nodes in a special feature layer. I look through my access database and I just find the Shape Index table which has MinGX, MinGY, ...
2
votes
3answers
1k views

IFeatureBuffer - performance considerations (ArcObjects)

I'm trying to optimize my code to make it faster. I have a loop that reads some string input and creates points with the help of IFeatureBuffer and IFeatureCursor. If I create the buffer inside tho ...
0
votes
1answer
563 views

Fields from a selected feature set are missing when gp.submitJob(..)--in Flex— pushes feature set to geoprocessing service (in Python)

I am extending existing query functionality that I have added to the ArcGIS Flex Viewer. I would like to extract the results from a query--which consists of a FeatureSet--into a .gdb. In order to do ...
4
votes
3answers
3k views

How to delete multiple feature classes simultaneously?

I created a number of feature datasets to temporarily store the output of some ModelBuilder models. Each dataset contains several thousand feature classes, and the idea was that I could just delete ...
2
votes
1answer
679 views

Convert Features to Graphics

I want to convert selected features to graphics and keep the featuere symbology. I was thinking I could just call the UID command below, however it seems to not be working? Dim pUID As New UID ...
3
votes
1answer
730 views

How do I fire a function after all features have been selected by a box in OpenLayers?

I have a map rendering with Polygons on a Vector layer set up as features. I set up the features so they fire off a function when the feature is selected and this works fine. The issue I'm having is ...
5
votes
3answers
368 views

Selecting polygons by number of sides

I'm using ArcGIS 10 to build some figures for a journal article. One is a figure of an unstructured finite element mesh of triangles spanning the western Atlantic Ocean. I exported this mesh from ...
1
vote
0answers
69 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 ...
6
votes
1answer
2k views

Geometry from multiple selected features into one geometry

Lets see if I can explain what I'm trying to do. First of all I have developed an AddIn for ArcMap that can take one selected feature (Polygon) on a layer, grab the geometry of that feature, and save ...
2
votes
2answers
2k views

How to query which features of all vector layers intersect with a given bounds?

I am writing a Openlayers map app, and wondering whether there's a better practice to query which features of which vector layers intersect with a given bounds.. It's certainly not a good idea to ...
2
votes
1answer
1k views

How to deactive Vector Selection In OpenLayers wms features

This is my sample code and work fine :), But I have a little problem, I'm using multiple layer (WMS), when I zooming the layer will be shown or hidden. In my example bellow when OpenLayers level zoom ...
1
vote
1answer
554 views

How to update GML layer without reloading local file?

I set up a GML layer with local GeoJSON file as data source: veclayer = new OpenLayers.Layer.GML("vector", "localfile.json", { format: OpenLayers.Format.GeoJSON, strategies: [new ...
4
votes
1answer
7k views

How to get features in Openlayers vector layer

What is the exact API to get all features in a vector layer in OpenLayers? Suppose I have the "map" object, within which is a "Vector Layer": how can I obtain features in the layer?
1
vote
0answers
682 views

Change the symbol for a single feature in ArcObjects?

Is it possible to change the symbol for a single feature in ArcObjects? If so how? I know it's possible to setup the map symbology for different field values of a feature class, but I'd like to ...
3
votes
1answer
2k views

How to Insert Feature into Feature Class (in Memory) ESRI

I'm looking for suggestions on how to insert a new feature instance into a feature class that is in memory -- assuming that I don't have access to the feature workspace. For example, the feature class ...
3
votes
2answers
263 views

Sort feature type order in FME KMZ writer

I have 4 feature types I am writing to a single kmz file using FME. Currently, these feature types are written as folders in the kmz file and appear in alphabetical order. Is there any way to sort ...
3
votes
1answer
1k views

Referencing Feature Dataset in File Geodatabase with ArcPy

It's probably an obvious one but since I'm new to arcpy I'd appreciate any help. I'm trying to develop an arcpy script which will eventually loop through number of rasters and feature classes stored ...
4
votes
0answers
153 views

What open source solution would work best for auto extracting features from satellite images? [duplicate]

Possible Duplicate: Feature Extraction - Land cover I have been looking for an open source solution which would allow me to define a region (or collection of images) and extract features ...
2
votes
1answer
827 views

How to delete records from multiple, similar feature classes by attribute values using an SQL statement?

I have several hundred geodatabase feature classes which all have the exact same fields. I need to go through each of those feature classes and delete any records which match an SQL query (the same ...
0
votes
4answers
2k views

How to Clip a Shapefile of Circle features using a Raster using ArcGIS 10

I want to keep all the features in the shapefile that lie in the raster region and reject others. How do i do this? ------Adding More Details-------- Data to be Clipped: Is A Shapefile of 1 mile ...
5
votes
2answers
2k views

Clip (Analysis) in ArcGIS 10 running indefinitely

I am attempting to clip a series of polylines (cross sections) using a single polygon. There are approximately 2400 polyline features in my input featureclass. Is this too large for the Clip tool to ...
5
votes
1answer
839 views

Drag a Feature in ESRI, ArcObjects Engine (AxMapControl)

I'm trying to implement moving a point feature in a custom C# ArcGIS Engine application on an AxMapControl. I've already created a custom tool to do some other things. And I can track when the user is ...
11
votes
5answers
1k views

What is the fastest (performance-wise) way to serve PostGIS features?

I'm interested in the fastest way to serve PostGIS features. I can find several WMS improvements and alternatives (MapProxy, TileCache, Mapnik...) but not so many WFS Open Source improvements and ...
6
votes
1answer
3k views

How to select multiple Features from multiple Layers in OpenLayers?

Is there a way to select multiple features from multiple vector layers by using clickTolerance in click? I checked the documents of getFeature control and selectFeature control, seems not work in ...
4
votes
2answers
801 views

Replicating ArcMap's Point Sketch Geometry Editing (Feature Templates) in ArcObjects

I'm looking for a way to place, select, move, delete features inside a custom C# ArcObjects application (using AxMapControl). I found the exact behavior in ArcMap, but I want to save the user some ...
6
votes
1answer
393 views

Display Feedback “Stutters” When Moving Features

I have a custom tool for moving features that implements IDisplayFeedback and geometry-specific CoClasses to show the user where they are moving the feature. IMovePolygonFeedback polygonFeedback; ...
9
votes
3answers
3k 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 ...
5
votes
3answers
683 views

Fastest way to merge a feature

I am writing a arc engine application that can take a shapefile, and merge a set of polygons together. Here is the code that I am using to merge the polygons: private static void ...
3
votes
2answers
2k views

How to create a feature class in a file geodatabase in ArcGIS 9.3 with Python?

I'm not entirely sure if I am using the correct terminology, so I apologize in advance. What I am looking to do is create a file geodatabase and add a feature class directly into that file ...
1
vote
3answers
770 views

CreateFeatureclass_management doesn't add a layer to the TOC of ArcMap10

I created a python script for a toolbox and I am wondering about the fact that CreateFeatureclass_management doesn't add the feature-class as layer in the actual dataframe. This does not happen in the ...
0
votes
0answers
566 views

Why am I getting an “Error while inserting populated row into Insert cursor” on saveEdits?

I've created a new feature layer where I am allowing users to add polygons. It has a few attributes, but I am not setting them on the graphic when I add it to the feature layer's graphics collection. ...
3
votes
1answer
3k views

Relabel Vector Points in OpenLayers

I have created two labeled vector points on an open layers map. I'm trying to change the label text dynamically. I tried changing the values where the stylemap gets the values from and calling ...
2
votes
1answer
7k 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 ...
1
vote
4answers
3k views

Sum of areas in all each polygon layer?

I've got several layers/feature classes in an ArcMap 10 project. Thanks to everyone's help, I'm able to get the areas for the polygons contained within each layer. By opening the attribute tables ...
4
votes
1answer
441 views

Is there a way to get the X,Y from a feature class?

I currently have an instance of a selected feature class, and I want to be able to get the midpoint X,Y (if its polygon) or the X,Y (if its IPoint) of the feature from the layer, is there some build ...
6
votes
1answer
2k views

How to Verify if a FeatureLayer already exists?

I am currently working on a project where when user loads up their map (mxd) into our system, we create several custom featuerlayers for them. My problem is though, I have no idea how to check if I ...
3
votes
2answers
827 views

OpenLayers: Modify features without virtual vertices?

When using the modify feature functionality of OpenLayers, I get the option to move the individual vertices around. But I also get a set of virtual vertices - each vertex located on the edge between ...