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| − | <H2>
| + | --[[利用者:Sanak|Sanak]] 2009年10月4日 (日) 13:14 (UTC)このページは削除予定です。 |
| − | Loading GRASS raster and vector layers
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| − | </H2>
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| − | <P>
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| − | With the GRASS plugin, you can load vector or raster layers using the
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| − | appropriate button on the toolbar menu. As an example we use the QGIS alaska
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| − | dataset (see Section [[#label_sampledata]]). It includes a small sample
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| − | GRASS LOCATION with 3 vector layers and 1 raster elevation map.
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| − | <P>
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| − | <OL>
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| − | <LI>Create a new folder grassdata, download the QGIS alaska dataset qgis_sample_data.zip from http://download.osgeo.org/qgis/data/ and unzip the file into grassdata.
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| − | </LI>
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| − | <LI>Start QGIS.
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| − | </LI>
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| − | <LI>If not already done in a previous QGIS session, load the GRASS plugin clicking on Plugins > Manage Plugins and selecting GRASS. The GRASS toolbar appears on the toolbar menu.
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| − | </LI>
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| − | <LI>In the GRASS toolbar, click the grass_open_mapsetOpen
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| − | mapset icon to bring up the MAPSET wizard.
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| − | </LI>
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| − | <LI>For Gisdbase browse and select or enter the path to the
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| − | newly created folder grassdata.
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| − | </LI>
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| − | <LI>You should now be able to select the LOCATION alaska
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| − | and the MAPSET demo.
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| − | </LI>
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| − | <LI>Click OK. Notice that some previously disabled tools in the
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| − | GRASS toolbar are now enabled.
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| − | </LI>
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| − | <LI>Click on grass_add_rasterAdd GRASS raster layer,
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| − | choose the map name gtopo30 and click OK. The elevation
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| − | layer will be visualized.
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| − | </LI>
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| − | <LI>Click on grass_add_vectorAdd GRASS vector layer,
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| − | choose the map name alaska and click OK. The alaska
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| − | boundary vector layer will be overlayed on top of the gtopo30 map. You can
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| − | now adapt the layer properties as described in chapter [[#sec:vectorprops]],
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| − | e.g. change opacity, fill and outline color.
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| − | </LI>
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| − | <LI>Also load the other two vector layers rivers and
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| − | airports and adapt their properties.
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| − | </LI>
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| − | </OL>
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| − | <P>
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| − | As you see, it is very simple to load GRASS raster and vector layers in QGIS.
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| − | See following Sections for editing GRASS data and creating a new
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| − | LOCATION. More sample GRASS LOCATIONs are available at
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| − | the GRASS website at http://grass.osgeo.org/download/data.php .
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