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

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0answers
11 views

Serializing features as KML after modification?

I'm trying to serialize features (polygons) as KML after they have been edited via the modify control. Serializing them w/o edits works perfectly. The problem I'm having is the modify process seems ...
4
votes
2answers
788 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
90 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
41 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
155 views

Is there a way to “zoom to feature” in QGIS?

I am the GIS Director of a city public works. 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 ...
1
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0answers
52 views

Features in .shp can't be identified & won't render

Using QGIS 2.4.0 on Windows 7 Service pack 1. I have several .shp's, all polygons, that give me the following problem: 293 features are listed in the metadata and shown in the attribute table but the ...
2
votes
1answer
307 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
305 views

Meaning of Spatial Join ERROR 000840: The value is not a Feature Layer?

I'm using ArcGIS (ArcMap) 10.2 to determine the relative location of points of land to a regulated area. I downloaded a layer (.lyr) file that displays the regulated area, and am able to display that ...
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1answer
33 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 ...
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0answers
155 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
2k 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
182 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 ...
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0answers
16 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 ...
1
vote
2answers
503 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 = ...
1
vote
2answers
142 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
0answers
334 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 ...
0
votes
1answer
4k 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', ...
0
votes
1answer
66 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
2k 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
55 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 ...
0
votes
1answer
87 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
71 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'); ...
0
votes
1answer
180 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
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0answers
23 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
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0answers
25 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 ...
2
votes
2answers
195 views

Update raster value to reflect total number of points within cell- python

I have what should be a fairly simple task, but I can't seem to figure out how to do it. I have to do it in python/arcpy/gdal/whatever because I'm trying to automate this process for a hundred or so ...
5
votes
2answers
395 views

Need to merge overlapping line segments

I'm working with fish distribution data, and have combined several 24k habitat maps into a single layer that I'll call "critical habitat" In merging multiple distributions into one dataset, there are ...
0
votes
1answer
164 views

Copy selected features to another feature class

I had two polyline feture classes representing the same objects that I spatially joined together to reconsile/consolidate data about. At the time I was directed to remove some features from the ...
0
votes
0answers
117 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
1answer
723 views

How to find nearest city using Geonames features codes

I've got about 300,000 lat/lng coordinates of events that I'm combining into a large map. The coordinates come from all over the world. For each point, I want to find the nearest city of at least XYZ ...
0
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1answer
134 views

v.edit break: how to loop through XY coordinates on using GRASS on Windows 7

Trying to follow the suggestions on this thread: splitting a lines layer using points However, how to do so in a windows environment using the GRASS command console is beyond me, so I'm attempting ...
3
votes
1answer
73 views

Qgis creating point within complex shapes (with holes) [duplicate]

I'm looking for a tool to create a point in every polygon, that will be placed in the polygon. these are complex shapes with holes. the point must not put in those holes! the "plugin RealCentroid" ...
2
votes
1answer
446 views

Adding a point and then saving it to the server

This seems like a fairly simple thing to do, but I am not exactly sure how to complete it. I use ArcGIS for Server. I have all of my data for my feature layer on that database. The point is being ...
1
vote
1answer
65 views

Using QGIS, features are suddenly placed 7.5 thousand kms off correct location

I've been counting an muskrat dens on lakes with aerial photos by creating a feature in a separate shapefile. I checked my progress after doing about 80 small lakes and suddenly, half of the lakes ...
3
votes
3answers
200 views

keeping track of edited features QGIS

Does anyone know of a way to keep track of last added or edited features in QGIS? A kind of Editor Tracking tool.
1
vote
2answers
90 views

Arcgis javscript calculating lines in a place

I have two mapservice. Fist service includes parcels and second includes water pipe lines. I want to calculate total pipelines length in a parcel. How can I calculate this via arcgis javascript API. ...
1
vote
1answer
180 views

Accessing Attributes of Individual FeatureLayer Points with ArcGIS

I have been struggling for some time with selecting points from a featureLayer which is stored on an ArcGIS webserver. Each of these point graphics contains information such as an ObjectID, SiteName, ...
1
vote
1answer
174 views

popup when new feature is created

I am trying to create a code where a feature is created, and then automatically a popup window will open. Is there anyone who can assist me please? Here is a part of the code and I want the popup to ...
2
votes
1answer
488 views

OpenLayers featureclick event does not work with named graphic (graphicName)?

OpenLayers 2.13. (and 2.13.1) I have been trying to make featureclick event working with vector layers and named graphic features. It works with externalGraphic, but not named graphic (graphicName: ...
0
votes
1answer
59 views

How can i create single feature fwith Combining Selected feature qgis?

I am trying to create a single Qgsfeature from the Combination of selected features in Pyqgis. Currently i create the feature using a loop over selected features and combine them 1 by 1. but this ...
0
votes
1answer
81 views

openlayers gets all features

I need to get all features' names, and for that I did a listview to put all features' names on it. So when i click one feature, not on the map but on the listview, the feature must be selected. Here ...
1
vote
2answers
609 views

Display photo in GeoExt popup

I have point feature with name PointPhoto. This feature have attribute: id area PhotoPath Now I am using GeoExt popup to display this attributes, but I cant find a way to display image from ...
0
votes
0answers
102 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 ...
5
votes
1answer
784 views

Sharing a Folium Interactive Map w/ Embedded Markers

I have been experimenting with a few Python packages that have great potential for my dissertation research. Since I use pandas for pretty much everything, geopandas was a natural choice for working ...
2
votes
1answer
202 views

How to show in a custom QGIS form the feature and/or geometry info?

I need to show point coordinates on the from dialog used to edit the attributes of a point.. I see that in the formOpen the dialog receives a layerId and a featureId, but no iface object, so how can ...
1
vote
0answers
172 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
4answers
2k views

Zoom to selected features with ArcObjects

I am trying to figure out what is the best way to set the active view extent to be able to view all the selected features on the Arc Map. 1.The Map has only one layer. 2.The features are filtered ...
2
votes
1answer
232 views

Wrong values in Feature/Point to Raster

I've got an XY dataset that I'd like to convert to a raster, based on the ETrel_whol field. The ETrel_whole field includes NaNs and ranges from 0-1. I would like to convert this to a raster, with a ...
0
votes
0answers
210 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
134 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 ...