Until now I didn't want to give version 1.0 to this plugin since one important feature was still missing: After digitizing a new geometry the feature form was not opened like it is the usual behavior of the standard editing tools. But today I discovered very coincidentally the openFeatureForm method in the QgisInterface class. It wasn't a big deal to integrate it and now the feature form is opened and the plugin gets to version 1.0.
Feedback is highly appreciated!
From the help file (last update 8.8.2011):
Improved Polygon Capturing is a QGIS Python plugin, that allows to digitize new polygons or lines with predefined edge lengths. Point layers are not handled.
The plugin is available in the QGIS contributed repository. Please see the official QGIS manuals to get further information about plugin repositories.
How to useThe plugin adds a new icon and a spin box to the digitizing toolbar. The icons are derived from the gis icon theme and look as follows:
|Editing a polygon layer:||Editing a line layer:|
|The digitizing toolbar with added plugin:|
After finishing a new geometry the feature form opens and attributes can be entered.
If the distance in the spin box is set to 0 (zero), new vertices are set at the mouse position.
CaveatsThe plugin calculates the distance in plain trigonometry. Thus it is not recommended to use it in unprojected systems like EPSG:4326.
HistoryImproved polygon capturing plugin has been developed in June 2010 for a land management and registration project in the Lao PDR. It is used to digitize land parcels with known edge lengths from high-resolution satellite images. The parcel edges have been measured a priori in the field.
- Version 0.8 (June 2010): first published version
- Version 0.9 (February 2011): added support for polyline layers
and bug fixing
- Version 1.0 (July 2011): feature form opens in editing
mode after finishing a new feature
- Version 1.0.1 (August 2011): plugin gets an icon in the plugin manager and rubber band line width and color settings are considered