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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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votes
1answer
61 views

Arcgis FeatureLayer.MODE_ONDEMAND not select exactly coodinate?

I'm working with ArcGis API. I push my Feature Layer on map in MODE_ONDEMAND. But when I select feature (selectTask), the coordinates come out as [692010, 101011], with no decimal places. What I want ...
1
vote
1answer
70 views

Listing feature names as attribute within polygon using QGIS?

I have a number of polylines in QGIS that correspond to seismic SEGY files, and want to subset the dataset using a box/polygon that I make in QGIS. Is it possible to get the feature names that are ...
2
votes
2answers
566 views

How to correctly style GEOJSON (ESRI shapefile) for Geoserver?

I have a geojson file, where features are styled - fill and stroke colours - like this: {"type":"Feature" ,"geometry":{"type":"Polygon","coordinates":[[[15.50487,50.72638],....,15.50487,50.72638]]]} ,...
2
votes
1answer
285 views

Why can't I load more than 100,000 Features from a WFS-Layer in ArcMap?

I want to have all the trees in Berlin as Shapefile. But I only get the first 100,000 trees. This is the information about the WFS-Layer: http://daten.berlin.de/datensaetze/baumbestand-berlin-stra%...
2
votes
1answer
1k views

Imported KML Feature won't display in Earth Engine map

I have converted a shapefile polygon to a KML file using QGIS, and now am trying to import it to a Google Earth Engine feature table to clip some NDVI difference analysis I'm conducting, but I can't ...
1
vote
1answer
462 views

Merge points from multiple features that share common attribute

I have several point feature classes that all share similar attribute structure. How might I extract the points from all 9 feature classes that share a specific attribute? Background: There are 9 ...
1
vote
1answer
368 views

Label only selected features with PAL PyQgis using an expression

I'm trying to label only selected features with an expression using PyQgis and the PAL functions, but I don't find any example and the API don't help me a lot (or I don't found it). My Qgis version is ...
2
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0answers
162 views

File Geodatabase - Feature Save/Edit/Add Error [closed]

USING: ArcMap 10.4 & ArcCatalog 10.4 FILE LOCATION: Local Was wondering if anyone came across the same issue mentioned below, as I'm haven't been able to find an issue like mine elsewhere - I ...
2
votes
1answer
87 views

Using filters to filter a variable value with GeoTools

I have a Java Swing application which loads a line shapefile and draws a map. I'm using a filter and a rule to filter out the lines in the shapefile where the attribute "traffic" is greater than 500. ...
0
votes
2answers
150 views

GeoTools getFeatures takes forever

I wrote the following method as an onClick handler. First and second click, I got result from DB. By the third time, the code stopped in the "getFeatures(trgtFilter)" line and didn't return. In debug ...
3
votes
4answers
920 views

Is it possible to delete geometry (create NULL) but retain the feature row?

I'm trying to perform the reverse action to "display x/y". I have a point layer displayed on the map canvas, and I want to delete a point's geometry, as in remove it from the map, but retain the ...
1
vote
1answer
517 views

Feature selection in multiple shapefile layers

I've followed the geotools selection lab tutorial. It works perfectly. Now I would like to add another layer, using another shapefile. So I used JFileDataStoreChooser to select another shapefile and ...
1
vote
1answer
110 views

Getting the feature information under the mouse (GeoTools)

I'm interested in programmatically finding out information of the features (of a map) under the mouse. I'm using GeoTools for drawing the map using a shapefile. I've first used the following code line ...
1
vote
1answer
334 views

FME 2016 - FeatureMerger, row data to columns

I'm not able to get it work to "dissolve" data from rows to columns based on a join field. My source is connected twice to the FeatureMerger in FME 2016. It's connected to the Requester port and to ...
1
vote
1answer
1k views

How to iterate through each vertex in a line?

I am working with ArcObjects in building functionality for a toolbar inside of ArcMap. Once I start an edit session, I use the tools to manually draw a line. I am trying to loop through this line get (...
2
votes
2answers
954 views

Identify Features tool - selecting multiple features unless I really zoom in. Way to adjust selection radius

Identify Features tool - it selects multiple features unless I really zoom in. Is there any way to adjust the "selection radius" of the Identify Features tool so its "point sharp". I want to keep the ...
7
votes
2answers
259 views

Features to stay selected by default in QGIS?

Does anyone know if there's a way to configure QGIS so that when you plot a new feature (i.e. a polygon), it stays selected by default? If I have to select it separately, and it happens to fall on ...
2
votes
1answer
150 views

QGIS Random Points Error

I have an error in QGIS that I cannot seem to figure out. I have a zip-code level shapefile from the U.S. Census. I'm merging that with a data file by zip of counts. I want to make a dot density ...
2
votes
2answers
2k views

Selecting certain fields from feature class to create new feature class in ArcPy?

I am stuck on how to create multiple features classes from one feature class using a select few fields. I have the following attribute table for a shapefile. I would like to select the 'USAF', 'COUNT'...
3
votes
0answers
517 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 ...
2
votes
0answers
235 views

Identifying lines of one feature class that touch another feature class with their endpoints in ArcMap? [closed]

I want to find out and select the features of one feature class, which both endpoints touch another feature class. In the picture above it would be the left pink line which touches feature of ...
2
votes
1answer
149 views

Reflectance values from WorldView-1 images?

Most of the informations on WorldView images are related to the second and third version of the satellite. I own a WorldView-1 image (the black and white one) and I really need to find the reflectance ...
7
votes
1answer
19k views

OpenLayers: Get Coordinates of drawn features

Can someone help in finding coordinates of drawn features? I am using this example OpenLayers website. I need to be able to export drawn objects as set of coordinates. Posting the code from the ...
1
vote
1answer
29k views

Exporting attribute table with 100,000+ features into Excel file using ArcGIS Explorer?

I need to export the underlying data contained in these GIS files (http://wildfire.cr.usgs.gov/firehistory/data.html) into a .txt or .ascii file. I am using ArcGIS explorer so I do not have the "...
2
votes
2answers
6k views

Deleting lines in QGIS

I have a layer with several shapes and from here I want to delete the lines. I tryed Toggle editing and Select features by polygon but when closing the polygon, it dissapears. Also I tried to delete ...
2
votes
2answers
9k 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 added ...
2
votes
3answers
2k 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 ...
3
votes
1answer
1k 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....
6
votes
1answer
121 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
2answers
68 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 ...
3
votes
1answer
823 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 ...
5
votes
1answer
3k 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 QgsApplication....
0
votes
2answers
1k 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
1k 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, labels)...
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 ...
5
votes
2answers
983 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.
2
votes
1answer
634 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
232 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 = ...
1
vote
3answers
8k 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
393 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 I ...
4
votes
2answers
4k 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 ...
2
votes
2answers
1k 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
955 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 ...
3
votes
1answer
229 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
53 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
31 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
2answers
2k 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
2k 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 ...
3
votes
1answer
263 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
168 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 : ...