Raster metadata

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# Click the {{button|text=Open Data Source Manger}} [[Image:QGIS_3.0_datasource.png|30px]] and then {{button|text=Add raster layer}} [[Image:QGIS_2.0_addrast.png|20px]]. Select file  ''/geodata/raster/s2/Subset_S2A_MSIL2A_20170619T_MUL.tif''.
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# Click the {{button|text=Open Data Source Manager}} [[Image:QGIS_3.0_datasource.png|30px]] and then {{button|text=Add raster layer}} [[Image:QGIS_2.0_addrast.png|20px]]. Select a single band raster file.
# After clicking {{button|text=Open}}, the raster layer appears on the QGIS canvas.
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# After clicking {{button|text=Add}}, {{button|text=Close}} the selection window..
# Right click the layer name in the Layers Panel and select {{mitem|text=Properties --> General}}. Report on the spatial reference system, size (columns and rows in pixels) and if a specific No-Data value is assigned.
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# Right click the layer name in the Layers Panel and select {{mitem|text=Properties --> Information}}. Report on the spatial reference system, size of the image in pixels (Width = columns and Height = rows), Pixel size and if a specific No-Data value is assigned.
# Choose {{mitem|text=Properties --> Metadata}} [[Image:QGIS_2.0_metadata_info.png|100px]]. In the "properties" window scroll down and have a look on univariate descriptive statistics such as minimum, maximum, mean and standard deviation for each band. How many bands are included in the multiband file? If statistics are not shown for all bands go to {{mitem|text=Properties --> Histogram}} and click {{mitem|text=Prefs/Actions --> Recompute Histogram}}.
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# Choose {{mitem|text=Properties --> Information}} [[Image:QGIS_2.0_metadata_info.png|100px]]. In the "properties" window scroll down and have a look on univariate descriptive statistics such as minimum, maximum, mean and standard deviation. If band statistics are not shown go to {{mitem|text=Properties --> Histogram}} and click {{mitem|text=Compute Histogram}}. Click {{button|text=OK}} to close the application.
# Jump back to the Metadata tab and report:
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# Report on:
 
#* Pixel size
 
#* Pixel size
#* No Data Value
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#* Columns
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#* Rows
 
#* Data type
 
#* Data type
 
#* Layer spatial reference system
 
#* Layer spatial reference system
 
#* Layer extent (Xmin, Ymin, Xmax, Ymax)
 
#* Layer extent (Xmin, Ymin, Xmax, Ymax)
 
[[Category: Working with Raster Data]]
 
[[Category: Working with Raster Data]]

Latest revision as of 10:11, 27 October 2021

  1. Click the Open Data Source Manager QGIS 3.0 datasource.png and then Add raster layer QGIS 2.0 addrast.png. Select a single band raster file.
  2. After clicking Add, Close the selection window..
  3. Right click the layer name in the Layers Panel and select Properties --> Information. Report on the spatial reference system, size of the image in pixels (Width = columns and Height = rows), Pixel size and if a specific No-Data value is assigned.
  4. Choose Properties --> Information QGIS 2.0 metadata info.png. In the "properties" window scroll down and have a look on univariate descriptive statistics such as minimum, maximum, mean and standard deviation. If band statistics are not shown go to Properties --> Histogram and click Compute Histogram. Click OK to close the application.
  5. Report on:
    • Pixel size
    • Columns
    • Rows
    • Data type
    • Layer spatial reference system
    • Layer extent (Xmin, Ymin, Xmax, Ymax)
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