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

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11
votes
3answers
10k views

Including variable in where clause of arcpy.Select_analysis()?

I am trying to loop through a shapefile, selecting each feature in turn and copying it to a temporary shapefile to by included in a union analysis. I'm using a cursor to find the ID name for each ...
16
votes
2answers
9k views

How to get list of selected features in ArcGIS for Desktop using Python code?

I have a question regarding selections in ArcGIS for Desktop. Assumed I have one layer in ArcMap and I have selected two of five features. Is it possible to get a list of all selected features by ...
12
votes
7answers
27k views

Select distinct values from a single column of an attribute table (or layer)

Is there a way to select distinct values from a column in ArcMap? I have the data in both GDB and SHP formats. I have searched for ways to select using SQL, QueryLayers, ModelBuilder and individual ...
15
votes
4answers
5k views

Quickest way to select polygon by point in ArcGIS Desktop using ArcPy?

I keep thinking that I must be missing something, but there does not seem to be a tool in ArcGIS 10 to select features (in particular polygons) from a layer at a point (X,Y) location via ArcPy. The ...
10
votes
1answer
3k views

When iterating over a vector layer with pyqgis, how do I check whether a feature is selected?

While iterating over a vector layer using the following code (summerized from the example in the pyqgis cookbook), is there a way to check whether a feature is selected? provider = ...
2
votes
1answer
686 views

Select top 5 most items in a geodatabase

I'd like to know what is the best way to select the 5 most expensive items (in terms of actual monetary value) in my geodatabase where i have a price field. Prices are not necessarily ordered but can ...
0
votes
1answer
73 views

Creating Layer for Selected Features, then Moving it using ArcGIS for Desktop?

I have a frustrating problem with ArcGis 10.1. I rarely use this so don't really understand what is wrong. In an edit session I select a polygon. I would like to 'Create Layer for Selected Features'. ...
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 ...
3
votes
2answers
400 views

Listing features in the order they were selected

This is an ArcObjects-specific version of this question: Create Array From Selected Features Based on the Order in Which They Were Selected Is there a way to get the selected FIDs of a feature layer, ...
1
vote
2answers
6k 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.
1
vote
1answer
287 views

Why does this SQL syntax produce empty feature class with ArcGIS Select_analysis?

I'm working on a script that involves an arcpy.select_analysis function. The problem I have is that when I run the script it produces an empty file. I've verified that the whole thing works when in ...
0
votes
1answer
107 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 ...
28
votes
3answers
2k views

Is there a “Select by Attributes” plugin/widget for ArcGIS Server JS API?

I'm hoping to find some existing code which emulates the "Select by Attributes" dialog in ArcMap, within the ArcGIS Server JavaScript API. Writing a hard-coded QueryTask is easy - I'm looking for ...
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
730 views

How to select features using an expression with pyqgis?

How can I select features with pyqgis using an expression? I tried to use an QgsExpression but the select method doesn't take it: exp = QgsExpression("'ogc_fid' = 482") cLayer = ...
2
votes
3answers
742 views

Select “interior” lines of a polygon-to-line layer

I have a polygon featureclass that has adjacent features. Using Arc10, I am turning those polygons into lines using the "Featureclass to Lines" tool. Now I would like to select ONLY THE INTERIOR ...
6
votes
2answers
7k 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 ...
3
votes
3answers
844 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
2answers
77 views

Select feature one by one not working in pyQGIS?

I have used following code for selecting the features one by one. but when i run the script it is just selecting last feature and zoom it. I want to select each feature and zoom it. def ...
1
vote
1answer
79 views

Communicate relation between two table

At this time, I'm able to create a relation (1:M) between two table or geometries. After, I user Identify tool to exploit the relation. It is only possible to use this feature when your Identify tool ...
1
vote
1answer
498 views

Batch export all layers in ArcMap document that have selected features?

I have several layers in an ArcMap Document. All of these layers are stored as shape files. Specific features of the said layers are selected. I want to export the data as shapefile programatically. ...
1
vote
0answers
86 views

Does QGIS have a dynamic spatial join select tool, equivalent to MapInfo Boundary Select?

I´m a MapInfo user, I´ve gone over to QGIS and it´s got a lot going for it, except for some simple features from MapInfo I just can´t do without. One such is MapInfo Boundary Select, which is a basic ...
1
vote
1answer
565 views

How to add item to an existing selection layer

I have a selection layer of about 150 properties in ArcGIS ArcMap, and I want to add one more building to it (see image, area outlined in red circle). The problem is that I missed this building in ...
1
vote
1answer
206 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
votes
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 ...