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

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6
votes
1answer
377 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; ...
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 ...
3
votes
0answers
65 views

Filtered SimpleFeatureCollection really slow on Map and other operations

I'm working with a shapefile having about 85.000 features. I need to select some of these using a filter and then showing these on a map. Now... If I draw the entire shapefile's features the creation ...
3
votes
0answers
39 views

problem creating and editing features at extent edges

I'm in the process of creating a polyline feature layer of tectonic plates. I'm working with WGS-84 reference system, which means the extent is +-180 in lon, and +-90 in lat. In order to create the ...
2
votes
0answers
26 views

Geoserver Feature Versioning Support

I am creating a map feature editor that supports versioning & rollback using Geoserver as the WFS. From what I've read online, it seems Geoserver supports feature versioning. My question is how ...
2
votes
0answers
164 views

3D features (Polyline, Polygon) intersection library

For my research I am looking for a (python) library to get the intersection of some 3D features. The features can be Polygons or Polylines. Mostly I need to intersect a plane with my features and get ...
2
votes
0answers
122 views

How to cluster features based on their proximity?

I have around 500 features (Forests) that I want to cluster based on their proximity, and then work with those clusters. I only have the ID, and shape area of those features. How can I cluster them?
2
votes
0answers
87 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
0answers
54 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: ...
2
votes
0answers
94 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 ...
2
votes
0answers
210 views

Process to gather raster cells under features

I need to gather individual raster cells underneath a feature in a featureclass as quickly as possible. It seems that most ArcObjects functions have problem with island polygons, multi-part polygons, ...
1
vote
0answers
65 views

How to select and highlight feature by attribute

I have the below code which does a select by shape on my arc map how do I achieve this with attributes 1.The map has only one layer 2.There is a filter for the attributes on features Below is the ...
1
vote
0answers
90 views

GeoTools: SimpleFeatureCollection to KML error CoordinateReferenceSystem

I want to export a SimpleFeatureCollection (Read from a MySQL DB) to a KML file, here is my code used to read the infos into the console: private void featureCollectionToKML(SimpleFeatureCollection ...
1
vote
0answers
46 views

OpenLayers - Features in cloned layer changes style with original feature

Please help! My situation is that, I clone() a "newLayer" from an "oldLayer" with its features. Both of them seems correct at first. But then when I tried to change the style of "featureA" in the ...
1
vote
0answers
214 views

Add layers from WMSCapabilitiesStore to MapPanel and select polygons

I created a store and added layers to a grid Panel, when you click add layer to map it works fine, the problem is that when I call the function controle(layer) I can't select polygons in the layer ...
1
vote
0answers
135 views

How to set the holeModifier on OpenLayers.Control.DrawFeature to always be active?

I would like to create a button "draw a hole" taht uses by default the holeModifier functionality but the user dont need to press the cttrlBtn. The "standard" way I guess, would be to create a way of ...
1
vote
0answers
279 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). ...
1
vote
0answers
145 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 ...
1
vote
0answers
65 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
0answers
621 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 ...
0
votes
0answers
11 views

ArcGIS ApplyEdits w/ JavaScript

I'm new to ArcGIS API. In a form, how can you submit data to modify a feature using applyEdits? No map is involved with this. I have a form that populates the editable data with javascript. When the ...
0
votes
0answers
4 views

Query from plugin that shows result on Map and in Attribute Table

I'd like to create a plugin that performs a static (no user input required) query that, based on a condition, selects all the features on the map and displays these in the attribute table. I have the ...
0
votes
0answers
12 views

Link/unlink buttions in the Attribute Table's Form View

Toggling the edit button, in the Form View/Table View, buttons for adding/deleting a record is available. Two additional buttons are also available (Fig. 1). From the look of the icons they perform ...
0
votes
0answers
31 views

How to achieve labeling in openlayers as Google did?

I am tried to find a solution for my question. Please look the images below. Google Google are awesome!!.. They are doing fantastic technique in labeling part. Please look the marked labels, the ...
0
votes
0answers
39 views

Openlayers / QuantumGIS, export or sync features Offline

writing from Spain. I am developing a web application based on OpenLayers , GeoServer and PostgisSQL , packaged under OpengeoSuite . The issue has to do with vector layers and their features. Until ...
0
votes
0answers
21 views

QGIS 2.0 on Mac - Features disappear after additional edits

I have a plugin that allows users to add features via a dialog choice and then clicking to place points. The results are saved in a shape file, and changes are committed and saved when the user closes ...
0
votes
0answers
50 views

ArcMap- Create a symbology from RGB with colors name

I have a number of features loaded on a mxd I would like to create a script or model builder to assign each row containing a value in the coloum "ENTE" with a RGB color which must be represented in ...
0
votes
0answers
26 views

openlayers find feature by attribute

//ilce kontrol ilcecontrol = new OpenLayers.Control.GetFeature({ protocol: OpenLayers.Protocol.WFS.fromWMSLayer(ilce) }); ilcecontrol.events.register("featureselected", this, ...
0
votes
0answers
58 views

Point features disappear when moved using QGIS 2.0

When I move, either by the node or the move function, a feature symbol on the map canvas, it simply disappears, not just the label, the whole thing. CTRL-Z brings it back. I'm using a MAC OS-X. I've ...
0
votes
0answers
35 views

OpenLayers feature label is not centered

I have a problem with OpenLayers feature label. When I add label to the feature feature.attributes = { fullName: name, favColor: '#880000' }; and show feature on the map, then The label ...
0
votes
0answers
65 views

how can i read an attribute value from qgsfeature?

How can i read an attribute value from qgsfeature ? i am trying to update some attribute using other and i have to read value from attribute in the qgsfeature . my source code: provider = ...
0
votes
0answers
32 views

What is the action name in qgsinterface for the deselect feature from all the layer tool?

I want to add the deselect feature from all the layer tool in the toolbar when the qgis user start editing a vector layer. anyone know what is the name of this action in qgis api 1.8?
0
votes
0answers
84 views

OpenLayers - feaures from WMSGetFeatureInfo are not shown on layer (but they exists)

I have a project with google as base layer and geoserver serving WMS layers (structures - multipolygons) that are in EPSG:2039 The layers are showing fine on google base layer (I guess OL re-project ...
0
votes
0answers
27 views

How to split a feature using GDAL

I want a feature to be cut into 2 or more based on deviation of a segment i.e., the angle between 2 successive segments. At places, I may also require to merge 2 or more features.
0
votes
0answers
67 views

vector layer does not render points after modifyFeature

I'm implementing an appication with openlayers 2.12. Gets features from Geoserver after CQL search. Now, when the users clicks on one point/line/polygon, gets textual info via websockets (nodejs) for ...
0
votes
0answers
21 views

Searching with “run feature action” tool

I have folder location in QGIS: C:\Users \ Geodata \ [%"folder1"%] \ [%"subfolder"%] I can view folder with "run feature action tool". Is possible to insert something like [% * %] to search all folder ...
0
votes
0answers
45 views

Borderlines of states subdividing my GRID

![enter image description here][2]I just merged a map of a country with its states, so I went from having 1 feature (the whole country) to 32 features. Is there any way to have the borders of the ...
0
votes
0answers
61 views

Can't use the advanced digitizing tools?

I'm trying to merge some selected features on QGIS with the Merge Selected Features tool of the Advanced Digitizing tools Menu, but I can't. They're gray, not colored and I cannot click on them. How ...
0
votes
0answers
47 views

batch clipping code produces some shapefiles containing no features

#MASS CLIPPING (ogr2ogr) #Stefan Safranek #Shape Files by US-States import os, glob import subprocess from osgeo import ogr # Input folders saveFolder = "C:\\Users\\Stefan\\Desktop\\experiment ...
0
votes
0answers
25 views

Order of ID numbers of map features

Im working with QGIS 1.8.0. I divided a map into several features and wanted to know if there is a way to have the individual ID numbers for each feature in an increasing order? (equally spaced ...
0
votes
0answers
68 views

Overlay operation (not special join) between lines and polygons.

When doing an overlay operation (not special join) between lines and polygons, what will be the resulting feature type? Will it be lines, polygons or both?
0
votes
0answers
99 views

repeated feature on my Geoext combobox

I am trying to load data in a combobox from my layer in geoserver. I succeeded to that but I have repeated features, how to restrict the loading so as to not have repeated value on my combobox, here's ...
0
votes
0answers
51 views

Looks like a ghost polygon. Border line can not be deleted though two feature is the same layer

I'm a QGIS 1.8.0 user. I received broken shape file. I found one feature which has a border line within polygon. I tried to delete line with tool;Merger, Dissolve, Node tool and etc. I got the ...
0
votes
0answers
143 views

Create annotation layer with follow feature option set as default

I would like to create an annotation layer that has the "follow feature" option as the default. I've looked all over and can't seem to figure out how to do this from the initial annotation layer ...
0
votes
0answers
43 views

openlayers clustering alternative

Is there some alternative to group features in OpenLayers? My goal is to speed-up the process of rendering. Clusters allow to do that a bit faster than rendering just plain features. So, any ...
0
votes
0answers
54 views

How to obtain the center of Vector layer created using WFS query?

I created a vector GML layer using a WFS query with a filter. The layer renders fine . However, the layer does not appear to have any features associated with it (layer.features.length is 0 ) I need ...
0
votes
0answers
299 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
0answers
279 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 ...
0
votes
0answers
76 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 ...
0
votes
0answers
540 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. ...