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

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1answer
160 views

How to show a selected polygon feature, using a single marker in its center

I've been asked to replicate a map where the selected polygon is shown with a red tick/check mark: I need to tell ArcMap to use this symbol when a polygon is selected, so that un-selecting the ...
1
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0answers
181 views

How to combine three data extraction functions into one button?

I am looking to simplify my code. As of right now I have some code that allows users to extract GIS data in three different ways: Extract by drawn extent Extract by extent of the a county Extract by ...
0
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2answers
263 views

How to set Merge output as Select Input in ModelBuilder?

I'm using ModelBuilder. I tried to take the Output from the Merge tool as Input to the Select tool. But it doesn't work. I'm trying to Merge 90 Shapefile lines into one. Then "Select" some features (...
2
votes
1answer
87 views

Finding Code in QGIS Select Features Toolset

Can anyone tell me in what directory the pre-installed Python scripts for the QGIS selection tools (i.e., Select by Point, Select by Polygon) are found? I am using on a Windows 7 installation of QGIS ...
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0answers
47 views

How to determine distances of points from closest line? (Mapinfo or QGIS) [duplicate]

I have a set of points and a set of lines. I'd like to know distances of the points from the closest line... answering the question "how many points are within 500m to 1000m of one of the lines, how ...
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votes
1answer
86 views

Esri ArcGIS 10 - using ArcPy to select buffer line by length

I created a buffer, then converted polygon to line (around a city block). I want to select the internal line. I'm thinking since there is no uniform way that ArcGIS labels the interior or exterior ...
3
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0answers
185 views

Programmatically selecting features by polygon

Expanding upon this post how could you use QGis to programmatically draw a selection polygon and select features within the polygon? I have been using QgsMapToolEmitPoint(self.canvas), to find and ...
1
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1answer
103 views

Openlayers active select control on layer prevents drag and zoom

I've build this web-map http://gimoya.bplaced.net/Openlayers/Trails/map.html with bike-trails (retrieved from a KML on my webserver), where several trails from a region are covered by a selectable ...
2
votes
2answers
463 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
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1answer
43 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 ...
0
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1answer
305 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
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1answer
2k 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 ...
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vote
2answers
691 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 ...
3
votes
3answers
428 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
1answer
671 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
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1answer
252 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 ...
0
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1answer
87 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
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1answer
121 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
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1answer
151 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: ...
3
votes
2answers
1k 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 select)....
8
votes
2answers
1k 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 ...
1
vote
1answer
1k 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 ...
7
votes
1answer
3k 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
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0answers
35 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 ...
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0answers
114 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 ...
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2answers
7k 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.
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0answers
316 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 ...
6
votes
1answer
10k views

How to Export Selected Feature to New Shapefile Using ArcPy?

I currently have a search cursor iterating through a shapefile in ArcGIS 10.1 that selects a feature and runs a viewshed analysis on that feature (and only that feature). What's the easiest way to ...
0
votes
1answer
25 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 ...
3
votes
2answers
783 views

How to Select by Attributes on features sharing common value?

I am attempting to 'select by attributes' a point feature with the lowest numeric value which shares a common value with other point features in another field. For example: I may have 3 point features ...
3
votes
1answer
2k 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 ...
1
vote
2answers
276 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 (...
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votes
0answers
281 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. ...
1
vote
1answer
2k 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?
5
votes
2answers
1k 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 ...
3
votes
1answer
487 views

Why would Select By Location appear not to work properly after Multipart to Singlepart?

I am having issues using ArcGIS Desktop 9.3 and the multipart to singlepart feature and then selecting by location. Basically, I am able to run the multipart to single part feature to split up some ...
0
votes
1answer
94 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
1answer
936 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
1answer
93 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 ...
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0answers
27 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
1answer
252 views

How can i select many rows from a table?

I want to create an action that select many rows from PostGIS table to show many lines in QGIS. How can i select many rows from table with python to add these rows in a layer? Thank you
3
votes
2answers
2k 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
1answer
486 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 PLZ5_2012_bereinigt....
3
votes
3answers
2k views

Missing tools (icons) QGIS

I lost selection and navigation tools from the GGIS 1.8 toolbar when I tried drag then to different place. I can't get them back anymore. Where they disappear? All these tools are checked but are ...
2
votes
1answer
103 views

How do I select all polygons in a layer that border 2+ polygons in the same layer?

My data consists of equal-sized polygons. I need to identify and select all the polygons that border two or more polygons.
0
votes
1answer
111 views

Selecting a Polygon based on the location of a point

Currently I have a polygon layer made up of three shapes. All the shapes are listed in the attribute table. One of these three shapes intersects a point. I would like to select just the shape that has ...
2
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2answers
2k views

Exporting selected feature to google earth in QGIS?

Does anyone know if there is a plugin for QGIS that will export features to google earth similar to the one for MapInfo? Thanks, Alan
1
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2answers
488 views

Selecting an item with the mouse in MapBasic

This may seem relatively simple, but I'm pretty confused. I have written a mapbasic tool that does things to the table 'Selection' depending on user choices in a popup menu, but currently you need to ...
7
votes
2answers
8k views

How can I unselect a feature in Openlayers?

I am able to identify the selected features on my map using the following line: vector_layer.selectedFeatures I would like to be able to deselect this feature using a standalone function (not an ...
1
vote
2answers
610 views

How to select two points on a map using QGIS?

I need to select two points on a map in QGIS. I selected the element selection tool in menu view and I want to select two points. How can I accomplish this? Are there other tools or methods to ...