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

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2answers
291 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
94 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 ...
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1answer
47 views

SQL query within Select tool in ArcGIS model going very slow

I have been working on finding the shortest routes from a series of residential blocks (a shapefile with polygon centroids) to a a number of recreational areas. I have a total of 9 resulting OD cost ...
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1answer
80 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: ...
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1answer
169 views

CartoDB layer selector - selecting data from 2 layers

I used the CartoDB layer selector example (http://cartodb.github.io/cartodb.js/examples/layer_selector.html) with my data. Works fine. Now, what I really want to do is to select data from 2 layers at ...
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1answer
106 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
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1answer
77 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 ...
0
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1answer
1k 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 ...
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1answer
154 views

Selection not displaying all results in QGIS

I have a point layer. Of which I have just selected 15 points from the attribute table manually and say show selected attributes. Of these 15 one point does not get highlighted the rest do fine. When ...
-1
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1answer
64 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 ...
4
votes
0answers
170 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 - ...
3
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0answers
103 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 ...
3
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0answers
188 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
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0answers
36 views

Query out a specific date regardless of the time, using python

Problem: I have a feature class with an attribute table with a field called Edited_Date and its data in the field is as follows: 4/8/2015 10:00:00 PM. I want to select all records that are Edited_Date ...
2
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0answers
126 views

GeoTools, add column in query with CQL

I'm trying to query the database (DataStore) and want to let the datastore calculate a value for me. In SQL I would do it like this: SELECT name, ST_Area(ST_Intersection(the_geom, ....) AS myValue ...
2
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0answers
270 views

Select only features within the layout view

I want to create a tool layer in ArcGIS10 that will select only features within the current layout view so that I can add the attribute table to the layout and only show attributes for the selected ...
1
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0answers
48 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 ...
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0answers
67 views

How to relate feature class and table in ModelBuilder?

I am beginner in ModelBuilder, so I have some trouble with it. I have feature class, which contains forest stands (polygons) and table with data about age of their etages. For example, one forest ...
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0answers
29 views

Data Transfer of a point on line using the anchor point

Can I a line feature, the anchor point touches a point feature transferred the field value, even when the point touches another line(s)? How does this work?
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0answers
111 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 ...
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0answers
91 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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0answers
167 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 ...
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0answers
19 views

Quick way to select by attribute and zoom to selection in QGIS

I need to visually control hundreds of points in a layer on top of aerial photographs. Using the attribute table, selecting (with column filter expression) and zooming manually is cumbersome - so I ...
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0answers
27 views

How to select data from the table using Query Widget

I have a question regarding Query Widget of the WebApp. I made a web application using WebApp, and put a Query widget in it. The Query seems like working, because if I select parcels using Query, the ...
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0answers
33 views

Trouble with select by attribute on ArcSDE

I am having trouble with some extracts on a csv table on ArcSDE. Verifying my expression results in the following pop up: "The expression was verified successfully but no records were returned."
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0answers
17 views

How can I keep selected the output feature elements from a toolbox?

I have a simple toolbox (ArcGIS 10.0). From some selected elements from one layer, the tool, create a new one. I want that all the elements inside this new layer keep selected at the end of the ...
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0answers
29 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 ...