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

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2
votes
0answers
126 views

Cannot reselect polygon after modify

I've got various vector layers on a OL map. On one layer I have a few draw controls. If I draw a polygon I can select it (the whole pop-up thing works). This also works for all the other features. ...
2
votes
1answer
544 views

Bug With Adding Multiple Controls for Selecting Features in OpenLayers

I am trying to add functionality to my WFS layer which will allow me to do: Hover over a point and display a tooltip with information about the feature Click on the point to zoom in on it I have ...
0
votes
1answer
155 views

OpenLayers make feature not clickable

I have defined an OpenLayers.Select.Control - I need only hoveron and hoverout events. I have implemented it using callbacks that and it works. But I need to disable just on feature clicking ...
1
vote
2answers
9k views

OpenLayers vector layer remove all features

I have a map (using OpenLayers) and a vector layer containing features(points). Sometimes I need to remove all features from the vector layer. When I use vectorLayer.removeAllFeatures() then it ...
3
votes
1answer
960 views

change style of newly drawn points

I've a vector layer with a bunch of draw controls on it. You can add polygons, points and you can modify polygon. Now I changed the style of the points so they have a nice pin-like image. But them I ...
1
vote
1answer
1k views

How to select features from different WFS layers?

I'm trying to select features from different WFS layers but unfortunatelly it doesn't works in my code. This is my code: var select = new OpenLayers.Layer.Vector("Selection", {styleMap: new ...
4
votes
3answers
1k views

How to find out what features /tags are included in an .osm or .pbf file?

I would like to load osm data into a postgis (postgresql) database. In How to load OSM data into PostGIS preserving all Tags? there has been a solution posted: Download the OSM files (in .osm format)...
1
vote
2answers
312 views

Length of Feature

I have a shapefile which renders a map. I want to calculate and preferably store length of each feature in the shapefile either using QGis or through programmatic means. What is the best way to get ...
2
votes
2answers
88 views

XML not getting convert into list of Feature Objects

I'm getting a following XML response: <wfs:FeatureCollection xmlns="http://www.opengis.net/wfs" xmlns:wfs="http://www.opengis.net/wfs" xmlns:Alexandria="http://www.opengeo.org/alexandria" xmlns:...
7
votes
2answers
8k views

How can I unselect a feature in Openlayers?

I am able to identify the selected features on my map using the following line: vector_layer.selectedFeatures I would like to be able to deselect this feature using a standalone function (not an ...
2
votes
1answer
311 views

ArcObjects bug in OID field duplication while duplicating feature class?

I have a shapefile with a column of type esriFieldTypeOID with the name FID and numbers from 0 to 5 (the first odd think is that ArcMap does not show a * next to the column name in the table view even ...
2
votes
0answers
61 views

Is there a way to distinguish between digitized and pasted features?

Is there a way to tell if an added feature in QGIS is in fact a newly digitized one or a pasted feature? I think QGIS is treating both cases in the same way, emitting the same signal: ...
5
votes
3answers
2k views

How to update feature positions with clustering in OpenLayers?

I have an OpenLayers 2.12 map with a vector layer with a cluster strategy. All the static behavior is how I want it. Now I'd like to add the possibility to update the features' position. I do this ...
4
votes
2answers
988 views

How to select features that intersect but don't touch (using ArcObjects)?

So how do I do that? ArcMap's Select By Location selects also all features that touch, but I only need the ones that actually intersect the area. I currently use esriSpatialRelEnum....
5
votes
1answer
119 views

Is it possible show the feature attributes dialog when I add a feature in code?

I want to know if it is possible to make the feature attributes dialog in Qgis show up when I add a feature by code using: QgsVectorLayer::addFeature( tFeature ) This is available when I add ...
0
votes
0answers
769 views

Why is “Convert Graphics toe Features” grayed out in a dataframe that has georeferenced layers?

I have brought two graphics, a species range and a heatmap, into a dataframe and georeferenced them using control points. I rectified them and now I want to clip one with the other but I can't get ...
0
votes
1answer
1k views

delete feature from database by selecting feature from vector layer [closed]

I want to delete a feature attribute for example say grid completely from the map that is it has to be deleted from database. I am using OpenLayers 2.12, postgis 2.0 and postgresql 9.0. Please guide ...
1
vote
1answer
111 views

Are There Any OpenSource GIS Software Programs With an “Interactive” Rotate Feature Option?

![Rotate feature option][1]Sorry if the question is too simple, but are there any open source GIS software programs available with an interactive "Rotate vector feature" option? Eg : ArcGIS has it ...
5
votes
1answer
210 views

Creating feature from part of state boundary in shapefile of U.S. states?

I have a shapefile of U.S. states. I want to create a feature layer from it so that I can do a Near analysis with it. Suppose that I am interested in the Georgia boundary, but only the part of ...
2
votes
1answer
1k views

QGIS identify features button issue

Is there anyway to get the Identify Features button in QGIS to automatically select a layer and provide the information without having to highlight it first in the layers TOC? MapInfo and ArcGIS ...
1
vote
0answers
514 views

Tie up LineString to the feature when dragging it in OpenLayers

I have an application in OpenLayers which shows a number of devices (Feature) on a map. The devices are linked between each other by cables (MultiLineString). searchBoxModule.functions....
1
vote
1answer
367 views

I'm trying to zoom to a graphic, but nothing happens?

I'm trying to zoom to a graphic retuned from the query; query.OutSpatialReference = MyMap.SpatialReference; query.ReturnGeometry = true; After this query I used myMap.zoomTo(...
0
votes
1answer
1k views

lonlat from geometry point gives strange result

I added a vector layer to my main map with the controls like the example from openlayers: http://openlayers.org/dev/examples/draw-feature.html Now when I want to get the resulting lonlat from the ...
3
votes
2answers
3k views

Dynamically adding features with cluster strategy

I am trying to dynamically add features to a vector layer, and use cluster strategy to group those features accordingly. I am able to do this for the first set of data that gets loaded on the map. ...
5
votes
3answers
14k views

Change Icon of Single Vector Feature in Layer

Currently I am trying to change the icon of a particular feature of a vector layer that the user is focusing on. I add each feature to the map like so: var point = new OpenLayers.Geometry.Point(pt....
6
votes
2answers
326 views

Why am I getting duplicate ghost points (features), i.e., one point in the feature class but two points?

When editing some of the attributes in a point feature class in ArcMap 9.3, duplicate labels started showing up. When I click on the point, I discovered that the point has duplicated itself BUT there ...
5
votes
3answers
3k views

Slow IE8 responsiveness with OpenLayers and many features

Background Adding about 700 sites to an OpenLayers Map. Firefox 11 and Google Chrome display the sites just fine. IE8, which is the organization's standard and will not be upgraded for the ...
0
votes
1answer
776 views

How to select multiple features using advanced search SQL in QGIS

I have a layer of planning units covering a large area (there are over 16000 PU's). Three of the columns in the attribute table hold information about which planning units were included in the ...
0
votes
1answer
287 views

How to edit a group of selected features in QGIS?

I am dealing with a large number of planning units across a very large study area. I am selecting a number of features using the advanced search in the attribute table, and would like to edit them (i....
1
vote
0answers
570 views

Deleting Features In ModelBuilder ArcGIS 9.3

In ModelBuilder, I have a work flow (data is stored in a File Geodatabase) that currently concludes with the use of the Append tool. I am looking to delete a features, as the last function of the ...
1
vote
1answer
2k views

OpenLayers ModifyFeature and styling

In OpenLayers, I have a Vector layer with a StyleMap and SelectFeature and ModifyFeature controls, like this: vector_layer = new OpenLayers.Layer.Vector('My Vector Layer', {extractAttributes: true, ...
0
votes
0answers
112 views

why are split-lines saved in the attribute table? (qgis 1.7.4)

A few months ago I splitted some lines in a shapefile with official roads because they are not accessible anymore. Now I loaded that file again into my project and the splitlines appears. Because I ...
1
vote
1answer
798 views

openlayers trigger hover event

I have a bunch of tracks on screen in a vector layer. I used some hover and select styles in the layer styleMap and these styles are properly triggered by: var highlightCtrl = new OpenLayers....
4
votes
2answers
800 views

Problem with multiple feature selection

In an attempt to retrieve all features (point geometry) that fall in a selected polygon, I get the error this.layer.addFeatures is not a function. My code is as shown below: function createWFSVector(...
4
votes
1answer
1k views

merge selected features and programming

I have a shape file with UK districts and unitary authorities. In the past, using commuting patterns, I worked out a new geography which is close to travel to work areas. I now would like to create a ...
1
vote
2answers
151 views

Fetching field values from uncommitted features on Qgis

I'm trying to fetch a feature's field value on Qgis, I use QgsFeature.attributeMap().value(cont int & key).toDouble() This works fine for committed features but it always returns " 0 " if the ...
2
votes
2answers
6k views

openlayers change marker icon, size and offset after drawn

I'm having much trouble changing my (feature)marker icons 'on the fly'. The problem is that I use much different images and also need to change the offset. So I iterate over every marker and make a ...
2
votes
1answer
207 views

The relation between the Feature's Geometry and its externalGraphic

I wonder what is the relation between the Geometry.Point one sets for a Feature.Vector and the image provided as externalGraphic for the style, in OpenLayers. Is the Geometry.Point of a feature for ...
4
votes
1answer
1k views

Retrieve data from FeatureClass

I have : FeatureClass (Structure) column (Type) column (OID) I am trying to get the (Type) for specific OID. I tried to use this code but it dose not work. IFeatureWorkspace featureWorkspace = (...
6
votes
2answers
183 views

What event is fired when a feature is edited?

When the user draws a new feature (line, point, etc.) in ArcMap, there are null attributes. If the user enters values in these null fields what is the event that is fired? I want to control the ...
3
votes
1answer
156 views

OID for the last added feature

How can i get the Object ID for the last feature created ? i use m_editEvents_OnSketchFinished() event to run some code, but i can't get the OID of the most recent added feature.
7
votes
3answers
7k views

How to delete feature class features faster (ArcPy)

I have written this script that recurses through all feature classes in a given set of feature datasets and deletes all their features. It appears to do the job but it runs pretty slowly. Is there ...
6
votes
1answer
161 views

How to store and serve data and its progress over time in GeoServer?

I recently started working with GeoServer and stored some shape files. I successfully can retrieve the data as JSON. The data I want to maintain in the database changes over time. I do not want to ...
1
vote
0answers
173 views

How to create a dynamic distance calculator for selected line feature classes?

My situation: I am relatively new to GIS so forgive me if this is a stupid question. I am working on a project at a park that I am interning at where the goal is to create a single feature with ...
9
votes
3answers
10k views

Exporting multiple featureclasses to shapefiles using ArcGIS Desktop?

I have many feature classes in a geodatabase and I need to save/export them into shapefiles. Any Ideas? Click on every single layer -> export is not a good option, due to the number of feature ...
3
votes
1answer
5k views

Problems with features, popups and strategy with OpenLayers

I'm trying to create a website for vehicles localization on map, but i have some problem with openlayers. This is my first time with OL... What I would do is: - add and update features (my vehicles) ...
5
votes
1answer
8k views

Assign Icons to specific points dynamically in OpenLayers

I have a json file describing features on a map (routes, points etc) points include places of interest such as airport, harbor etc. Is there a way to assign icons to these points? example: have a ...
1
vote
1answer
662 views

Zoom to country with geoserver and openlayers

I would like to preposition an OpenLayers map on a country. This is, when my page loads, the map should be positioned on the country with an appropriate zoom level. This should work for a (large) ...
3
votes
1answer
1k views

How to change data type in Excel file before creating feature class?

I am trying to import data from Excel spreadsheets where each point coordinate has a 'datetime' timestamp (e.g. "2012-06-01 14:45:32") associated to it. When I check the table properties ArcGIS 10 ...
4
votes
3answers
916 views

Can I prevent features from being created outside an OpenLayers map?

In our app, we allow users to create features on maps. The boundaries of these features will later be converted into real-life latitude/longitude coordinates, but does not make sense if features are ...