The selection of data from a database based on some criteria.

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2
votes
2answers
31 views

How to populate fields for line segment with value from polygon to left and right of it?

I have a countywide roads dataset that is used by an emergency dispatch system. There are two fields, "Comm_RT" and "Comm_LT", that need to be populated by the name of the community polygon they ...
0
votes
1answer
14 views

Trouble Using Selection Expression in QGIS

I am trying to use the selection expression box to highlight counties by state FIPS. When I use the OR conditional all counties across the US get highlighted. So for example, STATEFIPS = 1 will ...
1
vote
2answers
46 views

How to select island polygons witin the same polygon layer?

i have a dataset containing many polygons. In this dataset some polygons have other polygons (as a donut) inside of them. So those island polgons are contained by only one polygon but it originated ...
0
votes
1answer
53 views

Clip and ship by a queried layer extent and by user defined extent

I am trying add a functionality to the clip and ship script. I would also like the users to extract data by the extent of a queried feature layer. For instance, if County = "Alameda" then extract data ...
0
votes
1answer
56 views

JavaScript API - Query and Edit point from Feature Layer

I am attempting to recreate the ESRI example for attribute inspections (https://developers.arcgis.com/javascript/jssamples/ed_attribute_inspector.html). I am having an issue when I create my feature ...
0
votes
1answer
41 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 ...
1
vote
1answer
50 views

Select point with highest value within a buffer

I work with ArcMap 10.2.1 and I created buffers around points. Some buffers contain many points and others just one. I would like to select one point for each buffer, but the points can represent ...
2
votes
3answers
104 views

Select layer by attribute: return top 3 records

I have a feature class in a file geodatabase using ArcGIS 10.1. I want to create a model that selects the three features with the highest values in one field (Average Price). Basically I want my ...
0
votes
0answers
17 views

Select feature or graphics for editing geometry

i research about selecting feature or graphics for editing geometry and i found geometry editor sample but in this sample only you can add new feature after adding, you can not select and edit. Now i ...
0
votes
1answer
47 views

Best Way to Get a List of Selected Rows for a Specific Layer using Layer Object in ArcGIS

What is the fastest/cleanest way to get a collection of rows that are selected in a certain layer? For some background, I am trying to hide selected features in a specified layer. The solution ...
0
votes
0answers
14 views

Assign feature actions in QGIS--too many actions run at the same time

Using QGIS, I'm assigning actions to a polygon layer whose features are based on extents of hundreds of maps of a variety of files (including DWG, DGN, PDF, jpg, etc). However, since some of the ...
0
votes
1answer
38 views

Selecting few biggest polygons within class

I have polygon shapefile with objects that have 'class' and 'area' values in attribute table. I want to select five biggest polygons in each class. I can't do it manually because of large number of ...
0
votes
1answer
47 views

How to select landlocked countries in Africa using Select By Location?

I wish to select the landlocked countries in Africa using just Select by Location. I have already dissolved the boarders to get one big polygon and I thought I might combine these two telling ArcGIS ...
1
vote
1answer
36 views

Python script to select a point within a cell?

I have two features: points and grid cells (vector). I want to select a point within a grid cell (some cell do not have point) using python script and create a new feature layer with below conditions: ...
0
votes
0answers
35 views

Selecting WMS Layer on hover - Error Openlayers.REQUEST.GET params

I have wms baselayer and wms shapefile. I want to select the wms shapefile feature while hovering and change its color. I tried SLD Select and adding Selecting and Hover Vectors separately, but ...
1
vote
2answers
54 views

How can one select only displayed features using the select by rectangle tool? [closed]

I have a shapefile with many features, only some of which are displayed. I'm using the "Select Features by Rectangle" tool (the one where you click and drag a box over the features you want to ...
0
votes
1answer
163 views

replacing dijit.ComboBox with dijit.Select results in error (ArcGIS Javascript API)

I am currently populating a Dojo ItemFileReadStore with the results of an ArcGIS query (Javascript 3.4 API), which is then passed to a Dijit COmboBox. I am now having problems with the ComboBox in iOS ...
3
votes
1answer
43 views

How to select an limited TOP n from a specific column in arcgis query builder

I'd like to know what is the best way to select a limited top 'n' of rows from a specific column of a geodatabase file. Currently I use a function in the query builder of the select tool (arcgis10) in ...
5
votes
1answer
96 views

How to select specific row in attribute table using ArcPy (without iterating through whole table)?

I am using ArcGIS 10.2 and have assumed until now that it is possible to select a specific row in an attribute table. However, I can't seem to find a way to do this. The only available methods seem to ...
0
votes
0answers
21 views

Selecting features through a many-to-one relationship

I want to select multiple counties based on the occurrence of a species present within them. I have a County polygon layer with CountyName as an attribute, a flat table called tblSpCnty with the ...
1
vote
0answers
33 views

select remove layers not working second time

http://www.youtube.com/watch?v=qxVO0tFdiuA&feature i captured video. You can watch. Now i explain my problem. Firstly, when i create popup and in popup menu when i call function and select ...
1
vote
1answer
45 views

Select polygons by attribute belonging to another layer

I'm a recent QGIS user. I have a shapefile A with a series of polygons indicating land use of an urban region (urbanised areas). Now I want to select them in relation to a second shapefile B with the ...
0
votes
1answer
40 views

Call Identify Click Function on Dropdown Change

I am a web programmer with no GIS experience and I am working with a GIS specialist with no web service experience. I am using the JavaScript API 3.7 but I am not very familiar with the API. I have ...
1
vote
0answers
65 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 ...
0
votes
1answer
102 views

ArcGIS wmslayer select feature android

i am using ArcGIS Runtime SDK for Android and it supports wmslayer but there is no sample or code for selection feature with using wmslayer. my app show the map from getting data my wms server. Do ...
0
votes
1answer
22 views

QGIS 1.8 or 2.01 select entries in .shp file that match a field entry [duplicate]

I've got a .shp file with 40k points (trees) in it. One field is the species name. Is there a way to select those entries that match a desired field name e.g. 'black walnut' so I can move them to a ...
8
votes
2answers
235 views

Simple way to detect/select border polygons of a shapefile

I am looking for a simple way to detect/select border polygons of a shapefile. Border polygons are here polygons that are not completely surrounded by other polygons i.e. polygons located at the ...
3
votes
0answers
106 views

How to select features based upon multiple values in graphical modeler?

I'm trying to create a basic model using QGIS, the QGIS graphical modeler and the sextante toolbar. In part of the model, I need to select features based upon multiple attribute values (for example - ...
2
votes
1answer
130 views

QGIS select feature, “add to current selection” feature

I am trying to perform a feature selection on qgis similar to "add to current selection" interactive selection method in Arcgis Desktop, is that possible? An example: I perform a spatial query and ...
0
votes
2answers
61 views

Selecting a polygon within polygon where part of its boundary is the same. PostGIS

I would like to know how can I select a A_polygon within B_polygon, but part of the boundary of the A_polygon touch the B_polygon boundary. In Postgis 2.0, I tried few options but they didn´t work ...
3
votes
0answers
92 views

QGIS Select Single Feature not correct in attribute table

For some reason, QGIS is not displaying the correct row of my data when I click on a feature with "Select Single Feature" or even the other select tools. I have a point database linked from mysql. ...
2
votes
1answer
735 views

Activating and deactivating of button control not working properly

I have got two buttons, one for editing purposes and one just to see all the information related to the polygon I selected. Also I added these two buttons on my panel using OpenLayers control. I am ...
1
vote
1answer
158 views

Check if feature is selected (Openlayers)

I wonder if there is a way to check whether a pointfeature (OpenLayers.Feature.Vector) is selected. I read the API, but didn't find any solution. Any idea?
3
votes
2answers
183 views

How to select features with NULL Geometry from Shapefiles?

I have been given a Shapefile that contains records with NULL geometry, along with records with non-NULL geometry. This situation appears to cause problems in QGIS (1.8 and 2.0) when editing the ...
1
vote
1answer
141 views

Openlayers SelectControl add multiple Layers

Heres my code to add an SelectControl with Popup for an existing layer add startup map.addLayer(window.markerLayer); window.markerLayer.events.on({ }); // Popup für Marker window.selectControl ...
0
votes
2answers
279 views

OpenLayers: WMS layer above select-controlled vector layer?

Is it possible to display an image layer (WMS or Image) above a vector layer with activated SelectFeature control in OpenLayers? The image layer (radar returns) contains only sparse, semi-transparent ...
1
vote
2answers
127 views

How to select features of visible layers in QGIS

In QGIS 1.8 I used plugin "Select features of visible layers by rectangle" to know the layer that owns a visible feature. In QGIS 2.0.1 this plugin is no more available. I wonder if it is possible to ...
0
votes
1answer
59 views

Openlayers selection

Is it possible to select a polygon from a predefined Lat & Lon programmatically? eg location point: x='1234' y='5678' intersects polygon '1234', therefore SELECT POLYGON '1234' So far I have ...
5
votes
2answers
220 views

How to detect duplicates and keep only one?

I've got a table with lots of points (200.000). Some of them are duplicates (not exactly but e.g. a metro station has eight entrances) and I want to keep only one of these metro entrances. I am able ...
4
votes
1answer
137 views

How to eliminate small polygons using ModelBuilder to iterate through feature classes

I created four large polygon feature classes of surface slope classes from a grid of 6-foot cells covering half my county. In order to repair the geometry and eliminate small polygons I broke four ...
0
votes
0answers
14 views

Selecting Particular field in attribute table in qgis [duplicate]

I am having a shape file which contains following fields such as shape area ,shape length,locality ,sub locality etc.My aim is to select only a particular field say for example locality and I want to ...
0
votes
1answer
54 views

how to select parts of a shape in QGIS

I have to have a Shapefile of France of the bigger regions: Ile-de-France, Bretagne, etc. and that is already included in my shape. But its only shown the Arrondissements (smaller regions) in France ...
0
votes
0answers
25 views

How to select areas from a target layer which do not intersect source layer? [duplicate]

I have two different layers, one is county boundary and another one is soil map. My question is I would like to select only those areas which are outside the county boundary. Using "Select by ...
0
votes
2answers
164 views

javascript function to search all OpenLayers vector features covering a pixel

I have an OpenLayers map that draws features in a vector layer. The features are selectable and have a popup on select. Unfortunately in a lot of cases the features overlap so it can be impossible to ...
3
votes
1answer
425 views

How to highlight on mouseover without wiping out select control

I am trying to highlight features of a vector layer as the mouse moves over them. I can make this work. I'm also trying to make the features selectable and have a popup box when they're clicked. this ...
0
votes
0answers
36 views

How to refresh child data element of shapefiles through iterations

I’m trying to automate some processing steps for several shapefiles that are contained within multiple subfolders. I am able to iterate through the subfolders, but the model won’t iterate through the ...
2
votes
2answers
497 views

ArcObjects snipped to Select all Features currently visible on the ArcMap screen (ActiveView)

I guess I have to get the extent of the ActiveView and then use it to perform a spatial search. Is that the proper way to do it? Please share the code snipped if you have any. Thanks.
0
votes
2answers
2k views

OpenLayers Select a feature from attribute or id

Using Openlayers.....Is it possible to select a feature on a map by an attribute? eg: Select a feature from a dropdown menu populated with the feature "id" or a table field attribute values.
0
votes
1answer
169 views

Map Basic. Where-clause in Select Statement

what is wrong with this statement? I recon the where-clause is the problem. Select * from "BEDIRECT_POT_" + vo_num, PLZ5_2012_bereinigt where "BEDIRECT_POT_" + vo_num.PLZ like ...
4
votes
1answer
1k views

How to select points within a polygon from another layer?

I'm using QGIS 1.8 with a PostGIS database and I have three postgis-layer in qgis a lines layer, a points layer and a polygon layer. What I'm trying to do is to select a polygon in the polygon layer ...