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

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1
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1answer
41 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
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1answer
35 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
votes
0answers
46 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 ...
1
vote
1answer
12 views

Geotools : Using filters to filter a variable value

I have a java swing app which loads a line shape file and draw a map. I'm using a filter and a rule to filter out the lines in the shape file where the attribute "traffic" is greater than 500. Each ...
0
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2answers
23 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 ...
2
votes
3answers
124 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
25 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 shape file. So I used JFileDataStoreChooser to select another shape file and ...
1
vote
1answer
12 views

Getting the feature information under the mouse (geotools)

I'm interested in programmatically finding out information of the the features (of a map) under the mouse. I'm using geotools for drawing the map using a shape file. I've first used the following code ...
1
vote
1answer
34 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 ...
0
votes
0answers
18 views

Draw nearest points for specific point-line couples

I have a network made of several segments and some nodes located in the map. What I want to do is to choose individually a couple node-segment and find the location of the closest point to the node ...
0
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1answer
45 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 ...
1
vote
2answers
40 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 ...
0
votes
0answers
15 views

Overlay tools failure in ArcGIS 9.3 [duplicate]

I consistently get various error messages almost everytime I try to use an overlay tool (e.g. union, intersect, clip, spatial join) or in one case with spatial join I got none-sense results. Some ...
7
votes
2answers
103 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 ...
1
vote
1answer
34 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 shape ...
2
votes
1answer
33 views

How to select certain fields from a feature class to create a new feature class

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', ...
0
votes
0answers
30 views

Loading feature from kml file without mouse click or pointermove using OpenLayers 3?

I'm using OpenLayers 3.14.1. I use a kml file to load info about a map, with a linestring and some placemark. I need to select linestring not with a mouse click or pointermove, but after I load the ...
3
votes
0answers
28 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
43 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 ...
3
votes
1answer
33 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 ...
0
votes
1answer
74 views

Open Layers: 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 ...
2
votes
2answers
94 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
1answer
38 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
1answer
50 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 ...
2
votes
0answers
89 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 ...
4
votes
0answers
45 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
22 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
33 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
36 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
70 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
57 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
428 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
13 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
67 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
92 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
89 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
229 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
64 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
60 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
263 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
109 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
46 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
31 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
42 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
14 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
76 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
175 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
38 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
32 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 : ...