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

learn more… | top users | synonyms

1
vote
0answers
338 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 ...
0
votes
1answer
109 views

arcobjects determine when attribute dialog window closed

In arcmap, I choose to "Display the attributes dialog before storing new features" in editor options for several layers. I intend to do further development upon user closing the attribute dialog ...
1
vote
0answers
80 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
1answer
71 views

openlayers drag control returns wrong XY

I am trying to use a Drag Control in a webgis. My problem begins when I finish the 'move' of a point. That is, originally the point has an XY like -8.308567019533697 and 41.376871762432685, displaying ...
2
votes
2answers
447 views

Modifying a WMS feature in POSTGIS with Openlayers

I have a WMS layer that i'm using to display complex features to the users. It was really the main reason i chose GeoServer, because rendering all the vectors, made it painfully slow. Like GeoServer ...
0
votes
1answer
277 views

Openlayers selected feature unselecting on map zoom

I have createc a select control and a StyleMap that includes default marker and select marker. var mystyle = new OpenLayers.StyleMap({ "default": new OpenLayers.Style("null", { ...
1
vote
2answers
706 views

In OpenLayers 3, how do I draw an extent as a LinearRect?

In OpenLayers 2, this was an easy feat. I was able to simply instantiate a LinearRect given the coordinates of my BoundingBox, and then add the LinearRect as a feature to a vector layer I had added to ...
1
vote
0answers
46 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 ...
2
votes
1answer
3k views

Openlayers 3 styling dynamic radius feature performance issue

I am migrating from 2.14 and have some features that come with a radius property. The expected behaviour is that when the users zooms in or out the feature renders without perceptible jumps as with ...
2
votes
2answers
338 views

How do I get layer feature type in OpenLayer?

I am new in openlayer and I wanted to add a modify feature function in my application, for this I need to know the feature type of the layer (i.e Point, Polygon or line). Because as per the feature ...
1
vote
1answer
3k views

How can I transform raster to vector in ArcGIS?

I want to convert from raster data to vector dataset using ArcGIS. Raster data consists of pixels and center of z values. Vector data sets consist of points, lines and polygons and x,y values. When I ...
2
votes
2answers
270 views

How do you programmatically access a feature's attachments?

I am attempting to access a feature's attachments in ArcObjects and I'm following the docs for Working with feature attachments. Everything is fine until attempt to access IAttachment.Data because I ...
1
vote
1answer
193 views

Dynamic scale dependency from attribute query using ArcGIS for Desktop?

If I have a feature class called roads with an attribute for type e.g. highway etc. Is there a way to setup a dynamic scale dependency on the layer based on the type of road? Like do a SQL query ...
2
votes
1answer
125 views

Uses for “Calculate Geometry” option

Is there another use for "Calculate Geometry" aside from calculating area, length and points? I already read the help section ArcGIS Help (10.2, 10.2.1, and 10.2.2) and it's very informative. ...
2
votes
2answers
113 views

How to get for a given pixel the values from different overlapped rasters?

I have a few rasters representing different soil properties, like soil pH and sand content. The rasters overlap perfectly, have the same dimensions and same coordinate reference system. I would like ...
4
votes
2answers
514 views

How to iterate through features in a shapefile using R?

I am interested in iterating through a point shapefile to perform tasks on a point by point basis using R. In Python, this can be accomplished using the following workflow: import arcpy shp = r'C:\...
2
votes
1answer
217 views

ArcGIS Model Builder perform split operation on each selected feature and delete identical on collection

I have created a model to select parcels and create segments for each parcel. If two parcels are sharing the same segment, delete duplicate. My model is attached. My question is: Before appending or ...
1
vote
2answers
751 views

Error on FeatureClass To FeatureClass conversion arcpy

I am currently working on a python script where I am trying to copy selected features into a feature dataset. Basically I have an mxd containing some layers, and for each layer I select features by ...
5
votes
2answers
120 views

QGIS renders outlines where none should be

QGIS always renders the borders of a feature polygon. How can I disable this? Even if I set Border style to "No Pen" and the colour is exactly the same for different categories there is a small grey ...
0
votes
1answer
162 views

vb.net arcobjects determine 'create features' on which layer

When I create new feature in editing session, I need to determine the new created feature is in which layer because after that have further more action on the layer. I wonder can this be done in vb....
2
votes
1answer
378 views

hiding some “feature”s in GeoJSON file on map

I have geojson file including boundaries of most countries in world. When I clicked on a "feature" (aka country, or polygon) I want to hide it while keep showing the others. because I am planing to ...
1
vote
1answer
123 views

Multivalue processing in the context of the modelbuilder

I am new to python so please bear with me. I have the following script that is supposed to get a multivalue parameter of several shapefiles as an input and then run the unionanalysis on all these ...
1
vote
3answers
351 views

Symbolizing multiple polygons as one by dropping internal boundaries?

Using ArcMap (ArcGIS 10.2 for Desktop), is there a way to symbolize two features within the same feature class as one feature without editing the feature and merging them? For example, if I have a ...
0
votes
2answers
153 views

MapInfo Tab Files - Which feature types are contained?

Without opening the TAB within a GIS package, is it possible to determine which feature class it contains? Could the TAB file be open in notepad and assessed for example?
2
votes
2answers
270 views

How to batch run an FME workspace on a feature basis?

Not sure about the title of my question... My point is to run an entire workspace for each feature contained in a reader. In python this would look like: for s in bus_stops: run_workspace(s) ...
1
vote
0answers
343 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 ...
2
votes
0answers
132 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
4answers
657 views

QGIS “Delete ring” no longer works

I have QGIS 2.4.0. Until just today, the "Delete ring" feature worked just fine. Now it no longer works at all. I rebooted and even reinstalled QGIS 2.4, and it didn't fix the problem. But I also ...
1
vote
0answers
605 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 ...
5
votes
2answers
2k views

get map tiles for a polygon

Based on this tutorial, I can easily find out a tile for a point. But is there an algorithm to find all tiles that are covered by a rectangle or lineString or by any other feature? I would greatly ...
1
vote
1answer
277 views

Apply new style to selected features in QGis

Let's assume that I have selected some features in QGis. Now all the features in that vector layer already has some style applied to it. Now, I want to apply some new style to the selected features. ...
3
votes
1answer
46 views

How to select more than one feature using values?

What should I do if I want to select more than one feature using values ? For selecting a single feature, I enter an expression like this which works: "LINK" = 28 Assume LINK as a field in the ...
1
vote
2answers
686 views

Zooming to feature in QGIS?

I have a shapefile that I created of points on each structure and address in the city. We have been working in ArcMap Desktop for 6 or 7 years and depend heavily on being able to simply go to "find", ...
2
votes
1answer
720 views

Merge multiple linestring features into a single multilinestring

Using QGis or ogr2ogr how do I convert a vector file containing multiple linestrings features into a single multilinestring feature? At the moment I've been doing this manually by converting the data ...
0
votes
1answer
35 views

Disapearing features after specific zoom degree in ArcGIS 10.2

I have faced a Problem during my Analysis. I have some Polygon Features and after up to specific degree they would be disapeared. I have checked all the Setting and no zoom degree in defined. What ...
0
votes
0answers
272 views

OpenLayers Vector Features with common properties in multiple Layers

I am trying to manage features across different layers. Features are displaying weather parameters at some points on the map. Hence there is a wind layer, a temperature layer, etc. which all are ...
4
votes
4answers
12k views

Where did my Create Features window go?

I closed the window and now I can't find it again. I've tried the Editor toolbar dropdown and Create Features is not even on there (at all, not even greyed out). Suggestions?
1
vote
1answer
469 views

Rotating Point feature problem

I am trying to create new symbols for our Stormwater Stream Restoration dept.. Utilizing some of the ESRI came symbols, I have adjusted their size and color and added them to the map. When I click the ...
1
vote
0answers
17 views

QGIS merge selected features tool malfunctions due to geometrical errors [duplicate]

The issue occurs using the 'Merge Selected Features' tool when there are geometrical errors in the features (not all are picked up by the 'check geometrical validity' tool). In 2.2 Valmeria, the ...
3
votes
2answers
2k views

How to change the value of an attribute using QgsFeature in PyQGIS?

I would like to update one attribute of a feature. However, I don't know to update it using the feature object. I have to use data provider to update it. layers = QgsMapLayerRegistry.instance()....
1
vote
2answers
160 views

Contours from DEM with human features

I am rather new at GIS and I would like to have some guidance on what follows. I have some DEMs derived from LiDAR data. These DEMs contain building and other human features (e.g., roads). I was ...
2
votes
1answer
523 views

Z-Index in GeoJSON features using leaflet

I have a watershed polygon with sub-watersheds contained within the larger watershed. I would like the sub-watersheds drawn on top. Can i control the drawing order of features within a geojson object ...
1
vote
1answer
7k views

OpenLayers 3: Create a map based on ImageStatic and add features (polygons, linestring etc.)

I have an image that I need to create an OL3 map for, so I've done: var map; $(function() { var imgProjection = new ol.proj.Projection({ code: 'pixel', units: 'pixels', ...
1
vote
1answer
120 views

Selecting Features in ArcGIS based on their relation other layers

I am extremely new to GIS mapping and I'm trying to do what I believe would be relatively simple. I have two layers: one contains data on school locations in Chicago and the other contains data on ...
2
votes
1answer
4k views

How to drag a feature in Open Layers 3

I'm trying to replicate something that was fairly easy in Open Layers 2 in Open Layers 3, which is: dragging an existing feature to a new location on the map. In Open Layers 2 I just added a ...
0
votes
1answer
83 views

QgsFeatureList features as QStrings

I am catching the selectionChanged signal and passing the selected layer to the registered method. Once here, I want to know the features that were selected. I do this with a call to layer....
0
votes
1answer
126 views

In QGIS are there similare construction tools to ArcGIS?

For a project we are using ArcGIS to reshape autogenerated features. For that we often use the construction tools polygon, rectangel, circle, etc in ArcGIS. The right angle is also an often used tool. ...
0
votes
1answer
131 views

Vector Layer editing in OpenLayers

I can draw a polygon in OpenLayers by this code. var points = []; var point = new OpenLayers.Geometry.Point(0, 0); point.transform('EPSG:4326', 'EPSG:900913'); points....
0
votes
1answer
329 views

How to submit data to modify feature using applyEdits of ArcGIS API for 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 ...
1
vote
0answers
32 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 ...