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

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2
votes
1answer
17 views

In QGIS combine multiple polygon parts of a single feature

This is a repost of my unsolved QGIS dilema. The image shows a single selected feature that consists of two polygons and the corresponding attribute table. Some nodes of the left poly have been ...
0
votes
0answers
12 views

How to delete features/records in ArcGIS Online hosted service using Python

How to delete features/records in ArcGIS Online hosted service using Python? I need to delete some features using Python from a feature services hosted in ArcGIS Online. I read a similar post that ...
-1
votes
0answers
25 views

QGIS 2.2 - Split line feature at node [on hold]

I've tried several times to split a line by feature and by parts on a node but I haven't got the expected result. What should I do?
0
votes
0answers
12 views

Tool for polyline edit [closed]

I'm building solution, that need to create map features as polyLines, give user ability to edit it and then post-process. I was looking for existing tools or components for user interface, but did not ...
2
votes
0answers
51 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 ...
3
votes
0answers
42 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 ...
0
votes
0answers
15 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
2answers
25 views

Feature class imported table as points and now want to display

In ArcCatalog and ArcMap 10. I have set up a feature class with all the fields I want to populate. I have data in a table format which includes wasting and birthing columns. I used the load data to ...
1
vote
1answer
28 views

Google satellite Image_Features

What is the method to close labels and features on satellite images of Google maps? NOTE: I don't want to use classic version of google map or use of history of google map. What i want to remove or ...
1
vote
1answer
24 views

Apply symbol to each feature (Categorized symbol)

I want to apply unique symbol to each feature. i have used following code for doing that from qgis.core import * from PyQt4.QtGui import * # supply path to where is your qgis installed ...
0
votes
2answers
35 views

how to draw coordinates along the lanes using MultiLineString instead of LineString

I trying to draw lines along the path of the lanes on the map using openlayer3 but i am not getting any lines on the lanes there is no error in the developers console as well <!DOCTYPE html> ...
7
votes
1answer
315 views

Feature/label visibility based on spatial relationship to index feature using data-driven pages

I'm creating a series of maps using ArcGIS data driven pages. I know how to display features that share an attribute with the index layer, but is it possible to display features (and similarly, ...
6
votes
4answers
1k views

Can someone help me identify this part of the map?

I'm sure 1 is a road, but what are those bumps on the side? I'm guessing 2 is a footpath. I have no idea what 3 is, if you don't know what it is, fine, let's leave it at that. I searched for what ...
0
votes
0answers
10 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 ...
5
votes
1answer
55 views

How to define precisely the radius size when using 'select features by radius' in QGIS

I'd like to select features with circles having precise radius in QGIS. By default this tool is freehand so it is hard to get a precise value.
1
vote
1answer
39 views

How to get the selected features - javascript api

I am totally new to geocortex. I am using Geocortex HTML5, javascript api After using identify tool to select features, how can I get the selected featureset in code?
4
votes
1answer
79 views

Select feature one by one and save it as image

I have used following code for selecting the features and save it as image. layer = self.iface.activeLayer(); layer.setSelectedFeatures([]) count =layer.featureCount() lstChalta = [] lstFeatures = ...
0
votes
3answers
95 views

How do you read/write a FeatureCollection from/to a json file?

I am trying to read in a json FeatureCollection (geojson 1.3.1) Python (2.7), add some properties, and write it back out to a json file (or string). I can read the file, and modify the properties, ...
3
votes
2answers
54 views

Splitting up selected islands using ArcGIS for Desktop?

What I'm trying to do is to split up that selected islands as single-part features/ polygons. But not all of them, you can see some little dots around the islands are like a part of the island. So ...
0
votes
0answers
39 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 ...
4
votes
2answers
183 views

fixing polygons with “ring not closed” errors

I have a shapefile with a single Polygon feature. This feature has a "ring not closed" geometry error (seen here in QGIS): I tried using buffering and the GRASS v.clean command as suggested in other ...
1
vote
2answers
76 views

QGIS 2.10 Unable to add features to a memory layer

I'm trying to add features to a memory layer. This is the layer creation : memlayer=QgsVectorLayer("{zr_typegeom}?crs=epsg:4326".format(zr_typegeom = typegeom), "memlayer", "memory") ...
1
vote
1answer
30 views

How to set color of single features with Python

I have a layer with cities. I want to set a different color for a specific country. I can iterate through all cites (features) and change the color of ALL features but not only of single ones. How can ...
2
votes
0answers
27 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
3
votes
1answer
39 views

Choosing aesthetic location over physical location?

I am in the process of putting together an infrastructure map for my city. We have received some engineering maps (and CAD files) that are assisting me in my task. I have also gone out and gathered ...
1
vote
0answers
11 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 ...
0
votes
2answers
49 views

Point feature plots in wrong place in QGIS?

I am using QGIS 2.12 on Mac OS X Yosemite 10.10.5. I have a single point with given latitude and longitude. I want to create a new vector layer (shapefile) which will plot one point on the map ...
0
votes
2answers
95 views

How to convert projected coordinates to geographic coordinates without ArcGIS? [closed]

I'm trying to convert a series of points from Easting Northing to LatLong, I have this working perfectly in Arc but ideally I would like the algorithm to do it through our own system. It is a huge ...
1
vote
1answer
30 views

Download openstreetmap data filtered by specific changeset comment

From openstreetmap, I want to download only the features that have specific change set comments (like #ABC). I already know how to download OSM data (using JOSM) and found this webpage shows filtered ...
1
vote
1answer
25 views

How can I remove feature selection from my layeroverlay in mapguide API?

I can add feature to my layeroverlay on mapguide API, but I don't know how to remove it. Can you help me find a method to remove a feature from a selection ? This is how i add features to my layer : ...
2
votes
1answer
115 views

String of coordinates into Openlayers-3 Linestring on Vector Layer

I getting a string of coordinates like so: [[38.313072, -89.863845] ,[38.312675, -89.863586] ,[38.310405, -89.862091] ,[38.310405, -89.862091] ,[38.309913, -89.861976] ,[38.309768, -89.861976] ...
2
votes
1answer
44 views

Making an ArcGIS Online Presentation wont let add shapes because they are more than 10,000 features

How can I add a shape that has more than 10,000 features to make a map in Online ArcGIS? Since it is only to show a sample of the work that has been achieved I could cut out information but I don't ...
1
vote
0answers
22 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 ...
0
votes
2answers
43 views

Getting around WFS Feature Count

Im trying to access a WFS where the feature count is limited at each extent (ie layer with 1000 feature with a limit of 100 for extent). Whether or not its to maintain performance or purely just being ...
0
votes
1answer
136 views

Openlayers 3: Access feature by ID

I want to create a map with openlayers, add feature points, let people move the points and retrieve the new coordinates later. I have searched the net for two days but all I found was an example where ...
1
vote
2answers
76 views

Adding properties to pop ups in leaflet maps

I have a leaflet map which display pop-ups that give the name of a country when clicked. How can I add additional properties and have them all displayed, similar to this map ...
1
vote
2answers
126 views

How to get all rivers from OSM using Overpass?

i'm trying to get the files for Rivers, for most rivers i search for them in the Wizard using name=example and waterway=example and this works fine. For many rivers and canals overpass doesnt seem to ...
1
vote
1answer
54 views

Cannot activate the Feature Search in ArcGIS Online?

I'm trying to use the feature search in ArcGIS Online, but until now without any luck. I have followed this instructions: ...
1
vote
1answer
66 views

Problem creating polygon in a layer

I am working in c++ qt4.8.5 and api qgis 2.8.2 c++. In my application I had to put polygon to define attractive zone. I found a great post in stackexchange (86812). I have based my on this post and on ...
1
vote
0answers
48 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
2answers
80 views

is it possible programmatically to rotate a svg of the feature without rotate all feature

I am working on a project that need to move and update the shape of the feature of the layer. I am working in c++/ QT4.8.5 and qgis api c++ 2.8.2. In my Layer I have a lot of features, each feature ...
1
vote
1answer
44 views

Max Number of Feature Selection in ArcGIS and QGIS [closed]

What are the limitations on the maximum number of features that you can select in ArcMap and QGIS?
1
vote
1answer
84 views

Is it possible to change the geometry without startEditing the layer

I am working in c++/QT 4.5 with the QGis 2.8.2 API. I had to change the geometry of features in a layer each second. Each second new data comes from the Ethernet connection, the application gets the ...
1
vote
1answer
43 views

How to change programmatically the value of attribute in one of several feature in a vectorLayer

I have a vectorlayer that contains a lot of feature, I know that each feature has an unique Id Each of them has some propertie like coordinateX, coordinateY, color, name With a QTimer, each 2 sec I ...
1
vote
1answer
17 views

Building error on changegeometryvalues

I am working with c++/QT and c++api gqis 2.8.2 I want to change the geometry of a feature, I have this code : QgsVectorLayer * lLayer = mMapLayer.value(TRACKS); QgsVectorDataProvider * ...
1
vote
1answer
62 views

Selecting features within bounding box using QGIS?

What is the best way within QGIS to select all of the features within a rectangular bounding box? Is it necessary to create a separate layer with the box, then to use the intersection tool within ...
0
votes
0answers
31 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. ...
1
vote
1answer
29 views

How to add a point in a empty vetorLayer creadted in memory

I am working in c++/qt 4.5 and qgis api c++ 2.8.2 I had to create and empty vectorLayer and add Point I saw in the qgis cookbook that it is possible to create a vector layer in memory ,I did that, and ...
0
votes
1answer
110 views

QGIS print composer atlas shortcut next feature

I have 25 features in the atlas of the print composer and I need to check every feature before exporting. It's quite annoying to click always the field in the status bar, so I wanted to use the ...
2
votes
1answer
367 views

OpenLayers3 change Layer source URL (or replace features loaded from another URL)

I have a map with a Vector layer, containing features from a GeoJSON source: var map = new ol.Map({ layers: [new ol.layer.Tile({ source: new ol.source.OSM() }), ...