-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathselect_by_location.html
56 lines (55 loc) · 2.78 KB
/
select_by_location.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
<html>
<head>
<script>
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments);}
gtag('js', new Date());
gtag('config', 'UA-179299301-2');
</script>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Select By Location</title>
<link rel="stylesheet" type="text/css" href="../css/base_styles.css">
</head>
<body>
<header></header>
<div class="sidenav">
<ul>
<li><a href="..">Home</a></li>
<li><a href="../Basics/" class="active">Basic GIS Operations</a></li>
<li><a href="../Analysis/" >Analysis Toolbox</a></li>
<li><a href="../Conversion/">Conversion Toolbox</a></li>
<li><a href="../Data Management/">Data Management Toolbox</a></li>
<li><a href="../Geocoding/">Geocoding Toolbox</a></li>
<li><a href="../Network Analyst/">Network Analyst Toolbox</a></li>
<li><a href="../Spatial Analyst/">Spatial Analyst Toolbox</a></li>
<li><a href="../Spatial Statistics/">Spatial Statistics Toolbox</a></li>
</ul>
</div>
<div class="content">
<h1>Select By Location</h1>
</br>
<a href="../Basics/basics.html">Back To Basic Concepts</a><br>
<a href="..">Back To Homepage</a><br>
<p>
QGIS does have a spatial selection tools, jsut like ArcGIS's <i>Select By Location</i>, it's also called Select By Location but has somewhat less options in the base tool.</br>
The tools is accessed either via the top menu bar -> Vector -> Research Tools, or by Searching for it by name in the processing toolbar.</br></br>
<img src="img/select_by_location_db0.png" height=200px width=750/></br></br>
<img src="img/select_by_location.png" height=350px width=450px/>
</p>
<p>
The tool is easy to use, lets take for our purpose a point layer and polygon layer, they look like this:</br></br>
<img src="img/select_by_location_db1.png" height=600px width=650/></br>
as you can see, some of the features in the point layer are <b>within</b> the polygon layer.</b></br>
what we'll do is select those features using <b>Select By Location</b>, when clicked this is the window opened:</br></br>
<img src="img/select_by_location_db2.png" height=600px width=600/></br>
we want to select features from the point layer, and compare them to all features from the polygon layer (since no features are selected within the polygon layer.</br>
the relation we want to check is "which features from 'A' are <b>within</b> 'B'".</br>
This is our result:</br></br>
<img src="img/select_by_location_db3.png" height=600px width=600/></br>
</br>
And thats it, Simple and easy to use, and now you know how to do that in Open Source.
</p>
</br><a href="#top">Go back to the top</a><br>
</div>
</body>
</html>