View source for Principal component analysis

= Using QGIS OTB plugin =
* In the search engine of the Processing Toolbox, type {{typed|text=dimension}} and select '''DimensionalityReduction''' under Image Filtering of the Orfeo Toolbox.
* Under the Parameter tab, select Multispectral band file as the input layer.
* Select '''pca''' under the Algorithm tab.
* Enter 4 as the number of components.
* Under Inverse Output Image [optional] untick Open output file after running algorithm (See Screenshot below). 
* Click on {{button|text=Run}} to execute the algorithm.
[[File:qgis_otb_pca.png|400px]]