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

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2answers
104 views

Select points located within Multi Ring Buffer

I have two point datasets, 1 showing the location of road accidents, the other showing the location of traffic intersections. I have created a Multi Ring Buffer at 25m intervals around the traffic ...
2
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1answer
74 views

Create Layer With Selected in QGIS

Came across this "Create layer with selected" button in the result for a Spatial Query in QGIS. And simply, this creates another layer from the same source with a query on the IDs. Does anyone know if ...
2
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1answer
95 views

Attribute Table Window loses highlighted selection after Addin is Opened

I'm so new to GIS that this question might seem dumb to a lot of GIS Developers. I have taken over a project that is an AddIn for an ArcGIS Desktop app. C# VS 2010 project. I can get the Selected ...
2
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1answer
32 views

Is there a way to apply the “Select features by rectangle\polygon…” function on multiple layers simultaneously?

I have put a map together using openstreemap data that is intended to be used as a base for different projects. However due to the amount of information (number of layers) the loading time is rather ...
2
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1answer
145 views

Joining data of two different datasets from varying distances and integrating into one dataset in ArcGIS

I have a pointfile of some 200 electrical boxes throughout the county. While the electrical boxes are "mapped", they are done so by using township range section data, so there actual location is not ...
1
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1answer
58 views

Use Only First “x” Characters from Table in qgis:selectbyexpression

I have a list of street names in this format: STRNAME Elsinore Neil Young Penny Fall And a shapefile ("input_streets") with street names in this format: STREET Elsinore Av Neil Young St Penny Lane ...
1
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1answer
34 views

QGIS - selecting 3D Polygons

I have downloaded a 3D polygon shapefile of buildings. I would like to be able to select some of the objects to create a new shapefile for doing 3D rendering but I cannot seem to be able to select any ...
1
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1answer
125 views

Deleting selected features with ArcPy?

I am having trouble deleting the features I have selected using 'arcpy.SelectLayerByLocation_management' tool. To use the select layer by location tool, you much pass in a .lyr file. My script ...
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1answer
129 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 ...
1
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1answer
160 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: ...
1
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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 ...
0
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1answer
15 views

How to discard sites when there is overlap between buffers?

I have 1,000 sites in a landscape that were sampled along a road. However, I think my sites are too close together. A lack of independence between my sites many be influencing my statistical models. ...
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1answer
39 views

ArcGIS Select largest N rows in group

I have feature class (Name: V1) in personal geodatabase with columns: Height [float] and Id [int] representing group number I need to do SQL query that will select eight highest 'Height' values in ...
0
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1answer
163 views

ArcObjects WPF Select layer in legend

Can I select a layer, by code, in the TOC/legend of a map in a WPF ArcGIS Runtime application? I develope in ArcGIS Runtime SDK 10.2.2 for .Net in C#.
0
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1answer
547 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 ...
0
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1answer
275 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
98 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
168 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 ...
3
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0answers
38 views

PyQGIS select layer by original table name

As far as I see, on QgsMapLayerRegistry.instance() there is a method to select layers: mapLayersByName(Qstring) and the method mapLayer(QString) respectively, wich accesses a layer by its id. ...
3
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0answers
191 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
votes
0answers
286 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. ...
3
votes
0answers
146 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
53 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
376 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
54 views

Selecting certain area of polygon according to size in ArcMap?

I have a set of polygons with a certain size (3500 sq meters each for examples). I only need 3000 sq meters of every polygon. Is there an automatic or semi-automatic way to create sub-polygons out of ...
1
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0answers
58 views

Is order of selection in Spatial Data important (attribute, location, graphic)?

When dealing with spatial data in a GIS system, does it matter which way you select the information if you're using all 3 - attribute location and graphical selection? In my experience it seems to not ...
1
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0answers
138 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 ...
1
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0answers
112 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
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0answers
130 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
30 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?
1
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0answers
188 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 ...
1
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0answers
115 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
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0answers
327 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
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0answers
37 views

Looping all features of cursor onto SQL Server feature class?

It might be me but I've been experiencing something weird. (I actually tried what suggested in this thread Arcpy MakeFeatureLayer won't loop with no luck) What I'm trying to accomplish is to use ...
0
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0answers
53 views

how I can get raster calculator select files with similar names?

The idea is to select raster files with parts of similar name, for example: Filenames (in between many others raster with other names, but in the same folder): 28feb11evs 28feb11evv 28feb11pr ...
0
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0answers
97 views

Select polygon feature(s) in ArcMap and pass this selection into Python Addin

Does anyone has an Pyhton example to select polygon feature (or features) in ArcMap and pass this selection into a Python Addin? The selection made by mouse will be better.
0
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0answers
121 views

Performing multiple selection in ModelBuilder?

I want to create several layers in gdb selected by field value from xls sheet. I'm tring do it in ModelBuilder, but I can't past through the SQL query in selection part. I don't know how to make it ...
0
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0answers
36 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 ...