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

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2
votes
3answers
887 views

Iterating polygons on a SpatialPolygonsDataFrame in R with readWKT

I have fetched some data (39 objects) from my PostGIS database and converted this data into a matrix: rs <- dbSendQuery(con, "SELECT ST_AsText(polygon_accumulation) AS ShapeWKT from accumulation;")...
1
vote
0answers
45 views

VectoreLayer Still Empty even if attribute has been set with value

I am working with the qgis api c++ 2.8.2, my application is written in QT 4.5.3 / C++ I had to create a vectorlayer in memory with attributes and features and export it to a shp file to import it in ...
2
votes
1answer
31 views

How to make a polyline with two-sided arrows show two colors

I am very new to ArcGis development and so bear with me if I asked a silly question. I am using ArcGis 10.2 on C#. I have two features (A and B) on the map. I need to place two arrowed lines - one ...
2
votes
2answers
317 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 ...
0
votes
0answers
14 views

how to rotate text with feature in openlayers 3

is it any way to rotate text when feature is rotated? when feature is created text is setted in center middle line. But when I rotate feature text doesn't rotate. I tried to set .setRotation() but ...
3
votes
0answers
28 views

Rotate feature by angle (QGIS)

Trying to offset a line by 10 degrees, rotating around an endpoint. I've read up on the older plugins and the new Rotate Feature tool, but am having trouble. I am using QGIS 2.8.9 Wien, reinstalled ...
0
votes
1answer
269 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", { ...
0
votes
1answer
24 views

Duplicating multiple shapefiles in multiple locations

I have created a design for a well pad with two well heads and an access road that I would like to duplicate in multiple (20) locations (i.e., the same site design will be used at multiple sites.) ...
0
votes
1answer
40 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
2k views

Having trouble selecting polygon from existing layer (using OpenLayers.Control.SelectFeature)

I am hoping someone can point me in the right direction. I am not a programmer, so that is my first roadblock. ha The problem: I have an existing polygon layer and I am trying to select one of the ...
2
votes
1answer
2k views

How to deactivate Vector Selection In OpenLayers wms features

This is my sample code and work fine :), But I have a little problem, I'm using multiple layers (WMS), when I zoom the layer will be shown or hidden. In my example bellow when OpenLayers level zoom ...
1
vote
1answer
27 views

QGIS - Listing feature names as an attribute within a polygon

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 ...
1
vote
1answer
221 views

Vector Click Event is not working

Actually I figured out some problems and corrected it. I declared the overlay just outside the init function. So now I got the 'featureselected' event working properly. But 'featureunselected' event ...
2
votes
2answers
32 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
511 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
50 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
48 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%...
0
votes
1answer
31 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 ...
2
votes
1answer
411 views

Shapes not matching number of records

I am trying to merge features (polygons) from 7 subregions in ArcGIS (v10.x). Merge goes fine but when I do any other process on it (e.g. Adding a field, calculations etc), the merged file is ...
1
vote
1answer
45 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
47 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 ...
1
vote
2answers
862 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 ...
4
votes
3answers
11k views

Hover/Popup feature problem

im really having an issue here. I am trying to realise a map where i can hover over the features and they get highlighted (works), then i want to be able to click them (works) , i also want a div to ...
1
vote
1answer
13 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 ...
2
votes
0answers
50 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
3answers
136 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 ...
0
votes
2answers
36 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 ...
0
votes
3answers
5k views

How to Clip a Shapefile of Circle features using a Raster using ArcGIS 10

I want to keep all the features in the shapefile that lie in the raster region and reject others. How do i do this? Data to be Clipped: Is A Shapefile of 1 mile circles. Data I want it clipped with ...
5
votes
1answer
2k views

slow to draw mapservices after access featureLayers within an ESRI Mapservice using Javaascript API

I am working on creating an online map using ESRI mapservices as a basemap and existing mapservices on our arcserver.. The problem I am running into is that the mapservices we have here are really ...
1
vote
1answer
43 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
15 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 ...
2
votes
0answers
48 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 ...
5
votes
1answer
1k views

Dragging Feature in ArcObjects and ArcGIS Engine (AxMapControl)?

I'm trying to implement moving a point feature in a custom C# ArcGIS Engine application on an AxMapControl. I've already created a custom tool to do some other things. And I can track when the user is ...
0
votes
1answer
68 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 (...
0
votes
0answers
21 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 ...
8
votes
2answers
6k views

Difference between Copy Features and Feature Class to Feature Class tools?

I have a feature class within a feature dataset in a file geodatabase (FGDB), and I need a copy of it in another FGDB. In ArcGIS 10.1, I've used the "Copy Features" tool, and it looks to be the same (...
7
votes
2answers
107 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
2answers
59 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 ...
1
vote
1answer
43 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
43 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', '...
5
votes
2answers
3k views

How to Count Features in a Feature Type in FME?

I am reading around 120 spatial tables in FME. I would like to export a spreadsheet or CSV using FME that contains the feature name (table name) and the number of records in that table. So far, I've ...
1
vote
1answer
127 views

QGIS print composer atlas shortcut next feature

I have 25 features in the atlas of the print composer and I need to check every feature before exporting. It's quite annoying to always click the field in the status bar, so I wanted to use the ...
0
votes
0answers
43 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 ...
1
vote
2answers
116 views

Splitting Quad to 1:7,500 in ArcGIS Desktop?

Here I have 1:24,000k quads. I know how to use the word split toolbox. What I would like to split 24,000K to 1:7,500 or 6,000k. Is there a way around for me to do that ? For example,, if you have one ...
1
vote
2answers
517 views

Openlayers 3 detect the layer by mouse move

I wanna do something like this ; Openlayers 3 Vector Layer Example But I don't want to one layer, 3 or more layer on the map and get feature like the example. How can I seperate the layer ...
3
votes
0answers
39 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 ...
3
votes
1answer
44 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 ...
2
votes
1answer
398 views

Querying OpenStreetMap tags by polygon using QGIS?

If I understand OpenStreetMap (OSM) correctly, all objects essentially have associated tags based on type of object (street, building etc) ... Can I use QGIS to obtain the statistics of different ...
0
votes
1answer
402 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 ...