Difference between revisions of "QGIS Convert Lines to Points"
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(Created page with "=Introduction= There are a number of layers in TUFLOW, for example breaklines, which use both line and point inputs. This page describes the method for converting the vertices a...") |
Chris Huxley (talk | contribs) |
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| Line 1: | Line 1: | ||
=Introduction= | =Introduction= | ||
| − | There are a number of layers in TUFLOW, for example breaklines, which use both line and point inputs. This page describes the method for converting the vertices along a line to a separate point file. To perform this operation | + | There are a number of layers in TUFLOW, for example breaklines, which use both line and point inputs. This page describes the method for converting the vertices along a line to a separate point file. To perform this operation, you can either use MMQGIS plugin (for more information on this plugin please see [http://michaelminn.com/linux/mmqgis/ http://michaelminn.com/linux/mmqgis/]), or the "Extract Nodes" functionality in the QGIS Geometry Tool. |
| − | =Method= | + | |
| + | =Method 1 - MMQGIS plugin= | ||
<ol> | <ol> | ||
<li>Ensure that the plugin has been loaded and that the line file is open.</li> | <li>Ensure that the plugin has been loaded and that the line file is open.</li> | ||
| − | <li>From the menu select '' | + | <li>From the menu select ''MMQGIS >> Modify >> Convert Geometry Type''.</li> |
| − | [[File:QGIS | + | [[File:QGIS L2P 001.png|600px]] |
<li>Set the following:<br> | <li>Set the following:<br> | ||
* The source layer to be the line file you wish to convert | * The source layer to be the line file you wish to convert | ||
| Line 11: | Line 12: | ||
* The output file | * The output file | ||
The plugin will create a new point file which contains all vertices along the line. If you wish to create intermediate points along the line you will need to use an alternate plugin. A plugin called ''Profile from Line'' appears to do this. | The plugin will create a new point file which contains all vertices along the line. If you wish to create intermediate points along the line you will need to use an alternate plugin. A plugin called ''Profile from Line'' appears to do this. | ||
| + | </ol> | ||
| + | |||
| + | <br> | ||
| + | |||
| + | =Method 2 - QGIS Geometry Tool= | ||
| + | <ol> | ||
| + | <li>From the menu select ''Vector>> Geometry Tools>> Extract nodes''.</li> | ||
| + | [[File:QGIS Lines to Points 002.png|400px]] | ||
| + | <li>Set the following:<br> | ||
| + | * The source layer to be the line file you wish to convert | ||
| + | * The output file name and location | ||
| + | Click "Run" and the tool will create a new point file which contains all vertices along the line. | ||
</ol> | </ol> | ||
Revision as of 11:35, 21 February 2018
Introduction
There are a number of layers in TUFLOW, for example breaklines, which use both line and point inputs. This page describes the method for converting the vertices along a line to a separate point file. To perform this operation, you can either use MMQGIS plugin (for more information on this plugin please see http://michaelminn.com/linux/mmqgis/), or the "Extract Nodes" functionality in the QGIS Geometry Tool.
Method 1 - MMQGIS plugin
- Ensure that the plugin has been loaded and that the line file is open.
- From the menu select MMQGIS >> Modify >> Convert Geometry Type.
- Set the following:
- The source layer to be the line file you wish to convert
- The new geometry type to Nodes
- The output file
Method 2 - QGIS Geometry Tool
- From the menu select Vector>> Geometry Tools>> Extract nodes.
- Set the following:
- The source layer to be the line file you wish to convert
- The output file name and location
