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Questions tagged [features]

Use this tag when asking questions about a representation of a real-world objects on a map.

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0answers
10 views

Adding featureSet into a featureLayer (dynamic renderer)

I'm trying to use a renderer and a legend on data from a featureSet, it displayes symbols and popups but the renderer fails. The data comes from a featureLayer but I display it with view.graphics so ...
2
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0answers
35 views

Slow retrieval of features

I have a vector layer with lots of features and I'd like to create a new layer in Python, containing only a subset of those features. To be more specific, I downloaded OpenStreetMaps data of Austria (...
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1answer
6 views

Retrieve features from WFS using geotools

I am new to GI systems. I am trying to retrieve features from a WFS using geotools: this is my snippet : String url = "http://geodaten.metropoleruhr.de/poi/poi?request=GetFeature&service=wfs&...
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1answer
49 views

Create GeoJSON Feature from FeatureCollection

I have a single polygon feature (no holes, no overlaps) which is currently defined as a FeatureCollection in GeoJSON, with type Polygon (not MultiPolygon). I am trying to use it with an online mapping ...
1
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1answer
39 views

Openlayers 5: view and save coordinates from drawn feature

I've been following the various examples including this OpenLayers: Get Coordinates of drawn features and this https://openlayers.org/en/master/examples/snap.html and have produced the code below (...
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0answers
13 views

Create polygons for pixelboundary in Google Earth Engine

My goal is to get the Percentage of Class Values from a fine Raster into a Feature Collection, for Each Pixel of a Coarser Raster I am Stuck at Creating Polygons per Courser Pixel (in Red) to use ....
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1answer
31 views

How to get individual features from a GeoJson-Multipoint feature using map.on('click'…) in openlayers 4.6.5

I'm trying to get the features of each MultiPoint-point when i click on a point in my openlayers map (4.6.5). The points shows on the map. I want to add a pop-up on each feature when i click on the ...
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0answers
25 views

Supervised Classification within the bounds of a FeatureCollection

I am a bit new to classification within GEE and was hoping to get some help regarding classifying within a specific region. var bands = ['NDVI']; var landSat = ee.Image(ee.ImageCollection('LANDSAT/...
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0answers
22 views

ogr2ogr: How to export / explode GeoJSON features from collections into separate files

I would like to use an ogr2ogr command to export features as multiple separate geojson files from a single GeoJSON feature collection. I have tried using the -explodecollections command but I am ...
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0answers
18 views

Using feature templates for other layers than original to change target layer in ArcMap?

I was wondering if there is, in ArcMap 10.6, any way to use feature templates in a different layer than the one they where created for. I have around 10 layers with similiar atribute tables (same ...
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2answers
51 views

Adding new features to selection list using PyQGIS?

The code written by Joseph answering to the question Features to stay selected by default in QGIS? layer = qgis.utils.iface.activeLayer() # Use active layer def select(featureAdded): layer....
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0answers
17 views

QGIS 2.14 c++ standalone application crashes using QgsMapToolIdentify

lResultList.append(mpIdentifyTool->identify(lCoord.x(),lCoord.y(),QgsMapToolIdentify::TopDownStopAtFirst, QgsMapToolIdentify::VectorLayer)); leads to crash of app. It happens when layers provided ...
4
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1answer
122 views

Deleting features in PyQGIS?

I am comparing geometries of input layer and output layer features. I want to delete features in output layers which has equal geometry to input feature. I am using following code to do that. for ...
1
vote
1answer
40 views

Counting features within other features

I've several files composed of elements like the one below which I'm trying to make sense of (essentially a very simple microtopography study). I've vectorised the image with lots of separate lines ...
2
votes
0answers
39 views

Create filter expression by selected elements?

Is it possible to automatically create a filter expression for the Query Builder by selected elements?
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0answers
17 views

ArcGIS not properly tracing a shapefile's polyline feature

I am working with the Street Network Database shapefile from the City of Seattle, in ArcMap 10.6.1. I attempted to use ArcMap's trace function on the polyline representing Rainier Avenue South. ...
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0answers
14 views

Removing labels for deleted point features in ArcGIS Pro?

I am new to ArcGIS pro. I have a number of points on a map that have been inputted into ArcPro from a KML file. I have deleted some of the points as they aren't required but the labels for the deleted ...
0
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1answer
54 views

Find index of Linestring element at feature, when hovering - openlayers/GeoJson

I have a Geo-JSON Linestring, this is drawn by 800 elements in OpenLayers 4.6.5. I'am trying to use the map.forEachFeatureAtPixel, and print a pop-up when hovering for individual elements on the ...
4
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2answers
266 views

Is there a maximum number of features that QGIS can save into a shapefile?

I have a very large .gdb that I want to reduce to my study area. Unfortunately, the study area is still quite big. I could select features that intersected my study area but when I tried Export > ...
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votes
1answer
69 views

NDVI time series based on UI selected features

I am trying to create drop downs that will select features from a feature collection, and have each newly selected feature drawn on the map. I want to have three selectable variables then calculate ...
0
votes
1answer
38 views

How can I add a featureCollection to another one to export into one sigle .csv file?

Sorry if this is an silly question, as I am starting to work with GEE. I am iterating (mapping) over a Sentinel-2 image collection, using different coordinates and dates in each step. My goal is to ...
1
vote
1answer
121 views

Highlighting selected geojson feature and return to previous state when another one is selected using Leaflet?

I've a map with a geojson layer containing markers, polygons and lines. I made a module so that when a feature is clicked, its properties are displayed in a frame and not in standard Leaflet popup. ...
2
votes
1answer
174 views

What does this symbol mean?

I have just used the shape tool to create an elliptical buffer around a point. However after doing this, within my layers table I have the symbol seen within the figure below (seen in red box). Note, ...
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2answers
276 views

Leaflet - How to show feature properties in a box that is not a popup?

Popup giving features properties are interesting but I would like to make a side bar where properties of a clicked feature would show. I've got the traditional code for displaying geojson features ...
0
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1answer
57 views

How to filter a feature collection to only features ENTIRELY inside another feature

I have 2 feature collections. One of the "departamentos" of Argentina, and another of the "provincias". These are internal political boundaries. The "departamentos" each belong to only one "...
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1answer
38 views

Filter four features from a vector shapefile to create a new layer to perform buffer, intersection and union on it, in QGIS 2.18?

From a dataset that contains points of interest defined by type of object with four different features, I am trying to distinguish the features to perform different analysis. Thought I had to filter ...
2
votes
1answer
51 views

Running into endless loop when adding feature to layer with pyqgis

I am working on a script where I want the user to add feature to a layer in edit mode, and then decide whether to keep the newly added feature in the layer or not. I am doing it the following way: ...
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0answers
97 views

Selecting touching features using QGIS? [duplicate]

There are several ways to select features in QGIS (by rectangle, radius, polygon and expression) but is it also possible to select features, which touches one selected feature? For example: In a ...
1
vote
1answer
381 views

Create time series for multi-polygon Google Earth Engine

I have a imported a KML as fusion table to GEE. This fusion table is type of FeatureCollection and contains 6 elements. I would like to create a time series of a raster (in this example MODIS LST), ...
0
votes
1answer
46 views

Feature stroke is not updated

I'm changing the stroke color of my features when they are selected like follows: var select = new Select({ condition: click }); select.on('select', function (e) { e.selected.forEach(...
0
votes
1answer
36 views

Comparing each geometry of shapefile with all geometries of another shapefile using ArcPy?

I want to compare each polygon from one shapefile with all the polygons from another shapefile. When one polygon is geometrically identical to a polygon on the other shapefile, I want to copy the ...
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0answers
41 views

Split Polygon to match length of lines with QGIS

I have a large polygon shapefile with many features (green), representing waterbody outlines, and a line shapefile (brown) representing river sections. I now want to split the polygon features into ...
0
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1answer
119 views

Compute convex hull of points in a feature collection

I uploaded an asset (which was originally a shapefile of points) and imported it into my script as a feature collection. I would like to compute the convex hull of the points, but it seems this ...
2
votes
1answer
100 views

Why QgsFeature.geometry() returns an empty geometry in PyQGIS?

I am a new for QGIS, working in Python. I add a buildings(.shp) vector layer into QGIS, just like this: I'd like to get the geometrys of some features, then I can do analysis on the center point. ...
1
vote
1answer
42 views

Clipping a road layer by using region attributes

I've been trying to clip a road layer into several layers by using region polygons. So in detail: I've got a layer with all roads of Germany and a second layer with all states and regions of Germany. ...
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0answers
17 views

QGis Python featurerequest with lists

I want to select some features and do some actions to this selected features. Something like if attribute in field a is = abc than do something. But the selection will not fit. As written in https://...
0
votes
1answer
396 views

Add a polygon programmatically in OpenLayers 3?

I added a point like this and it works fine, but for polygon it's not working. var iconFeature = new ol.Feature({ geometry: new ol.geom.Point([8637791.36, 1456487.82]), name: '...
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vote
3answers
680 views

Copy/Paste Layer with Attribute table to new Layer using ArcGIS Pro?

When I copy features from one layer in ArcGIS Pro to a blank layer, the polygons are transferred, but the attribute table behind those features is not transferred. To give a specific example, I ...
2
votes
0answers
61 views

Reverse geocoding geographic features

I have a growing database of routes. Each route is represented by a polyline with say 200 points on average. What I'm trying to achieve is automatic tagging of these routes with names of places and ...
0
votes
2answers
377 views

How to export a feature collection of feature collections in Google Earth Engine?

I have extracted NDVI values from Landsat 8 images to a shapefile of points 90 meters apart. I am trying to get these point files back into ArcGIS and R, but they are too big to print to the console. ...
1
vote
2answers
71 views

Select columns to keep from attribute table [closed]

I have lots of feature classes that I'm working with, but the attribute tables are really messy because I got the information from different sources. So I decided to clean them up. I made a table ...
-2
votes
2answers
41 views

Rename Features with IF/Else

I used arcpy.describe to get the shapetype of my features: desc = arcpy.Describe(Importpfad) geometryType = desc.shapeType Now i want to add this information at the end of the feature name. It also ...
0
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0answers
108 views

How to create sector polygon for a given point feature at a given radius (1000 Km), and direction using ArcPy code?

I want to create polygons of sector shape for many point features. Each sector has central angle of 90 degrees and radius of 1000 Km. How can I create it using ArcPy code? Here is my approach that I ...
0
votes
1answer
396 views

OpenLayers 4 VectorLayer Feature setStyle makes features disappear

After I have already displayed my map I want to highlight certain features. For starters I am trying to highlight all features like this: public highlightMapFeatures() { this.map.getLayers()....
1
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0answers
41 views

Splitting feature into fixed measurements

For my thesis I'm trying to split featuring in QGis into multiple new features of a fixed size (5.5 by 2 meters). I think it would be the equivalent of ArcGIS' Parcel Division tool, but unfortunately ...
1
vote
1answer
118 views

Feature merging in QGIS? [closed]

I want to merge these two features into one (N.B: One polygon shapefile, lots of features). But an error occurred. Any possible solution please? QGIS version: 2.14.20
1
vote
3answers
341 views

Creating a source and a layer from vector tile features in Openlayers

So I retrieve all my features from a vectorTile layer (PBF from Geoserver), and now I want to recreate a layer by filtering on those features and getting only those that satisfy a request. I ...
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0answers
86 views

Customizing identify form in QGIS?

Is it possible to customize the identify form in QGIS (I am using version 3) to create Balloon like windows and add a picture in addition to the features extracted from the table?
1
vote
1answer
64 views

Exporting tiled raster assets within mask feature selection?

I'm familiar with a method of exporting everything within a selected feature within Global Mapper using - Export > Export Raster/Image Format. This takes everything within that feature and exports to ...
0
votes
0answers
91 views

OpenLayers receive all feature data from Vector (WFS)

I would like to display a Diagram for the data that is received via a WFS. As this data is already displayed on the map, a second request is not necessary. Normally I receive the underlying data on a ...