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

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4
votes
0answers
45 views

Combine multiple adjoining parts of a single feature

In QGIS, one polygon feature resulted from merger of several adjacent polygons. This one new polygon feature has a single line through it that I would like to eliminate. When hovering over individual ...
3
votes
0answers
29 views

Rotate feature by angle (QGIS)

Trying to offset a line by 10 degrees, rotating around an endpoint. I've read up on the older plugins and the new Rotate Feature tool, but am having trouble. I am using QGIS 2.8.9 Wien, reinstalled ...
3
votes
0answers
40 views

QGIS “Align Edge” equivalent?

I'm trying to move from Arc to QGIS, and spend a lot of time making maps out of polygon features. One tool that I can't find is an equivalent to ArcGIS' topology tool "Align Edge" - is there such a ...
3
votes
0answers
147 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
60 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
130 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 "buff....
2
votes
0answers
39 views

How to make a shake animation adding feature on openlayers 3

Have you an idea of animate function to shake a feature when it's added to the map ? I've found only this animation from openlayers 3 samples: Animate feature example openlayers 3
2
votes
0answers
237 views

Moving multiple features to snap to nearest edge

I have thousands of long rectangular polygons which I need to align to a specific/nearest edge. The screenshot below demonstrates what I need to achieve: Yellow and white dotted features need to ...
2
votes
0answers
303 views

ArcGIS API for Silverlight : query that displays layer attributes in a dataGrid

I'm working with ArcGIS API for Silverlight to build a webmapping application and I'm trying to display my attributes in a datagrid. I made a try by using this code : void QueryTask_ExecuteCompleted(...
2
votes
0answers
130 views

OpenLayers Popup relative to a feature's position - prevent overlaps - only one popup in one time

There are many questions related about this topic. However there is no complete example for this widely used pop-up type: Basically i need a popup which will appear the top-right of a Feature (Point) ...
2
votes
0answers
95 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
450 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
230 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
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
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: ...
2
votes
0answers
118 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
216 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
14 views

Features becomes bigger on zooming in Openlayers 2.13

i'm new in developing Openlayers applications.I want to add Points and LinearRing objects to the same layer. My Problem is, when I add a LinearRing and I am zomming in, the geometry gets bigger and ...
1
vote
0answers
30 views

How to create a raster “grading” several different layers (polygons)

So I have a bunch of different shapefiles loaded into qgis: i.e.: - shape of poor soil quality - shape of cheap land areas - shape of poor weather areas now I would like to create a map which "...
1
vote
0answers
69 views

About performance of qgis with big layer or a lot of layer

does anyone has a feedback on the performance of a big layer by exemple : I have a layer with 100 features, each feature contains specifics attributes with dynamic data, the data change each second ...
1
vote
0answers
45 views

VectoreLayer Still Empty even if attribute has been set with value

I am working with the qgis api c++ 2.8.2, my application is written in QT 4.5.3 / C++ I had to create a vectorlayer in memory with attributes and features and export it to a shp file to import it in ...
1
vote
0answers
37 views

Iteratively Change Object's Instance Attributes PyQGIS

I am trying to create new instance attributes (NOT feature attributes) for a collection of features in a vector layer in PyQGIS. I'm getting some weird results and am wondering if this is even ...
1
vote
0answers
53 views

ArcGIS Android negative feature OID

I am attempting to add a feature to an existing feature layer hosted on the ArcGIS for developers website. However, when I attempt to apply edits to the map, it does not ever actually add it, and when ...
1
vote
0answers
99 views

Get Feature Count

My situation is as below, Database 1 : SDE database.Topo Feature Class : 170 Database 2 : SDE database.AOI Feature Class : 1 I want to get feature count of 170 feature classes base on selected AOI ...
1
vote
0answers
100 views

Reconstituting features from E00 format, without ArcGIS

Recently I used OGR to convert an ESRI E00 format file to shapefiles. I am dealing with vector data, many polygon features per file. I was dismayed to find that none of the resulting shapefiles(you ...
1
vote
0answers
51 views

Generate layers based on feature values

First of all, I am very new to the GIS world, so bear with me if the question is stupid. I am using ArcGIS and here's what I try to accomplish: I have a feature class (let's call it Areas) storing ...
1
vote
0answers
504 views

Render order of vector features in OpenLayers 3

In a web map application I have a vector layer from a GeoJSON source of country borders. The layer loads perfectly and interactions such as ol.interaction.select works fine as well. I want to style ...
1
vote
0answers
27 views

Creating single feature to represent group of individual features, based on location and #, using ArcGIS Desktop?

I am looking for an algorithmic way of handling this situation, as I can do it manually with the ruler and some time, but it would be nice to find a programmatic to have Arc do the work for me, so any ...
1
vote
0answers
325 views

Using Detect Feature Changes Tool in ArcGIS for Desktop?

Has anyone used the Detect Feature Changes (Data Management) tool in ArcGIS 10.2 for Desktop? I am working on two linear feature classes, one a newly updated and one an old one. This is the first ...
1
vote
0answers
75 views

Creating custom polygon symbol using ArcGIS Desktop?

How can I create a custom polygon symbol? I already played with layering the symbol levels to no avail. I think that I need something a little more advanced than that. I'd Like to get something that ...
1
vote
0answers
45 views

Zoom to a vector feature in a vector layer

I am using OpenLayers+GeoServer and I have a vector layer in a map with some features I would like to make a zoom and show the map centered in one of these features that I can get by ID. How can I do ...
1
vote
0answers
335 views

Create vector layer from feature collection in OpenLayers

I have used a WPS process gs:UnionFeatureCollection to compute the geographical union of two collections of WFS vector features. The process returns a collection of features which I intend to display ...
1
vote
0answers
591 views

FindTask result returns an array of features but only displays the last item in the popupwindow

executing the complete findtask url generated by my application from the address bar I get back a good json object that returns 112 features I was trying to implement functionality similar to this ...
1
vote
0answers
30 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 ...
1
vote
0answers
315 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
340 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
202 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
637 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
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
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
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 ...
1
vote
0answers
79 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
995 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
14 views

how to rotate text with feature in openlayers 3

is it any way to rotate text when feature is rotated? when feature is created text is setted in center middle line. But when I rotate feature text doesn't rotate. I tried to set .setRotation() but ...
0
votes
0answers
21 views

Draw nearest points for specific point-line couples

I have a network made of several segments and some nodes located in the map. What I want to do is to choose individually a couple node-segment and find the location of the closest point to the node ...
0
votes
0answers
43 views

Loading feature from kml file without mouse click or pointermove using OpenLayers 3?

I'm using OpenLayers 3.14.1. I use a kml file to load info about a map, with a linestring and some placemark. I need to select linestring not with a mouse click or pointermove, but after I load the ...
0
votes
0answers
24 views

Create polyline at latitude line

I would like to create a polyline shapefile that runs along a line of latitude between two points of longitude. I have been able to create a line by creating a new shapefile, then editing the vertices ...
0
votes
0answers
15 views

How to get feature ID correctly in Near table?

I have generated a near table using ArcToolbox, and there are 50 points in two datasets. The feature ID for input and near are quite bigger than normal, as the left one in the enclosed picture. I have ...
0
votes
0answers
73 views

ArcGis Feature layer does not display symbols consistently on web browers

I have a Feature layer that does not display symbols consistently. Symbols at certain locations are randomly not be visible. Zooming in-out will randomly show/hide a symbol at a particular location ...
0
votes
0answers
42 views

Modifying attributes of a shapefile using java

I have a polygon vector shape-file in which each feature has an integer attribute. I want to update this integer attribute(for all features) programatically using java on regular intervals of time. ...