Creating new vector layers

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{{Content Tree|HEADER=QGIS Tutorial|NAME=QGIS tutorial}}
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# Click the [[Image:QGIS_2.0_addrast.png|20px]] {{button|text=Add raster layer}} in the toolbar or choose {{mitem|text=Layer --> Add Layer --> Add raster Layer}}
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# Under {{mitem|text=Settings Project → Properties}} set the SRS to the coordinate system GaussKruger Zone 3 (EPSG: 31467).
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# Navigate to the georeferenced DOP ''/geodata_w02/mavic_rgba_modified.tif''. {{button|text=OK}}
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# Click the {{button|text=Add raster layer}} in the toolbar or choose {{mitem|text=Layer → Add raster Layer}}
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# Create a new vector layer:
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# Navigate to ''../geodata/multi_etm.tif''
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# Select {{mitem|text=Layer --> Create Layer --> New Geopackage Layer}}.  
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# Make sure the “Files of type” drop-down box has the “GeoTiff” filter selected.
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# Define path and file name.
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# Double-click the ''multi_etm'' layer in the legend to oprn the {{button|text=Raster layer properties}} dialog.
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#* As Geometry type, select {{button|text=Polygon}}.
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# Create a false color composite.  
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#* Open the CRS dropdownlist… and select the Project CRS: WGS84/UTM32N (EPSG:32632).
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#* In the {{button|text=Symbology}} tab change the assignment of RGB to the band number 542. Change the standard deviation from 0.00 to 2.0 and press {{button|text=apply}}
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#* Adding an additional New Fieled in the attibute table:
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# Create a new vector layer. Click {{mitem|text=Layer → New vector layer}}.
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#** For the the new field name name type {{typed|text=species_code}}.
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# Prepare the following window as shown below. <br> Type: Polygon <br> Type: Integer (whole number) <br> Name: cat <br> Widht: 3                                                         
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#** Select {{button|text=Whole number (integer)}} as data type.
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You can add additional attributes as columns with the button [[File:Addvaluesmanually.png|25px]]. Choose the data “type” of the column (Integer). The values of the attributes can be defined during the digitizing process.
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#** Confirm with {{button|text=Add to Fields List}}.
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[[File:Newvectorlayerad.png|400px|center]]
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#** For the scientific species name add a new field name: {{typed|text=species_code}}.
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<br>
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#** Select {{button|text=Texrt Data)}} as data type.
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<br>
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#** Confirm with {{button|text=Add to Fields List}}.
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Save the Layer in your ''geodata'' folder, name it {{typed|text=train}}.
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#** OK
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[[File:qgis_add_new_vector_layer.png|400px]]
  
  
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[[category:Working with vector data]]
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[[category:Working with Vector Data]]

Latest revision as of 10:06, 7 June 2021

  1. Click the QGIS 2.0 addrast.png Add raster layer in the toolbar or choose Layer --> Add Layer --> Add raster Layer
  2. Navigate to the georeferenced DOP /geodata_w02/mavic_rgba_modified.tif. OK
  3. Create a new vector layer:
  4. Select Layer --> Create Layer --> New Geopackage Layer.
  5. Define path and file name.
    • As Geometry type, select Polygon.
    • Open the CRS dropdownlist… and select the Project CRS: WGS84/UTM32N (EPSG:32632).
    • Adding an additional New Fieled in the attibute table:
      • For the the new field name name type species_code.
      • Select Whole number (integer) as data type.
      • Confirm with Add to Fields List.
      • For the scientific species name add a new field name: species_code.
      • Select Texrt Data) as data type.
      • Confirm with Add to Fields List.
      • OK

400px

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