OnWorks favicon

g.gui.iclassgrass - Online in the Cloud

Run g.gui.iclassgrass in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command g.gui.iclassgrass that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator



g.gui.iclass - Tool for supervised classification of imagery data.
Generates spectral signatures for an image by allowing the user to outline regions of


general, GUI, classification, supervised classification, signatures


g.gui.iclass --help
g.gui.iclass [-m] [group=name] [subgroup=name] [map=name] [trainingmap=name]
[--help] [--verbose] [--quiet] [--ui]

Maximize window

Print usage summary

Verbose module output

Quiet module output

Force launching GUI dialog

Name of input imagery group

Name of input imagery subgroup

Name of raster map to load

Ground truth training map to load


Supervised Classification Tool (wxIClass) is a wxGUI compoment which allows the user to
create training areas and generate spectral signatures. The resulting signature file can
be used as input for i.maxlik or as a seed signature file for i.cluster. WxIClass can be
launched from the Layer Manager menu Imagery → Classify image → Interactive
input for supervised classification or via command line as g.gui.iclass.

wxIClass currently allows you to:

· create training areas (using customized vector digitizer)

· show histograms for each band and class (category)

· show coincidence plots for each band

· show raster cells that match training areas (within the number of standard
deviations specified)

· specify color of class

· write signature file

· import vector map

· export vector map with attribute table

wxIClass performs the first pass in the GRASS two-pass supervised image classification
process; the GRASS module i.maxlik executes the second pass. Both programs must be run to
generate a classified map in GRASS raster format.

wxIClass is an interactive program that allows the user to create multiple training areas
for multiple classes and calculate the spectral signatures based on the cells that are
within the training areas. During this process the user will be shown histograms for each
image band. The user can also display the cells of the image bands which fall within a
user-specified number of standard deviations from the means in the spectral signature. By
doing this, the user can see how much of the image is likely to be put into the class
associated with the signature.

The spectral signatures are composed of region means and covariance matrices. These
region means and covariance matrices are used in the second pass (i.maxlik) to classify
the image.

Alternatively, the spectral signatures generated by wxIClass can be used for seed means
for the clusters in i.cluster.

Use g.gui.iclassgrass online using onworks.net services

Free Servers & Workstations

Download Windows & Linux apps

  • 1
    MSYS2 is a collection of tools and
    libraries providing you with an
    easy-to-use environment for building,
    installing and running native Windows
    software. It con...
    Download MSYS2
  • 2
    DOSBox emulates a full x86 pc with
    sound and DOS. Its main use is to run
    old DOS games on platforms which
    don't have DOS (Windows 7, 8, 8.1
    and 10 / Linux ...
    Download DOSBox
  • 3
    Xtreme Download Manager
    Xtreme Download Manager
    The project has a new home now:
    https://xtremedownloadmanager.com/ For
    https://github.com/subhra74/xdm Xtreme
    Download Manager is a powerful tool t...
    Download Xtreme Download Manager
  • 4
    Clover EFI bootloader
    Clover EFI bootloader
    Project has moved to
    Features:Boot macOS, Windows, and Linux
    in UEFI or legacy mode on Mac or PC with
    Download Clover EFI bootloader
  • 5
    Sequelize is a promise-based Node.js
    ORM for Postgres, MySQL, MariaDB, SQLite
    and Microsoft SQL Server. It features
    solid transaction support, relations,
    Download Sequelize
  • 6
    Join us in Gitter!
    Enable the URPMS repository in your
    system -
    Download unitedrpms
  • 7
    Boost C++ Libraries
    Boost C++ Libraries
    Boost provides free portable
    peer-reviewed C++ libraries. The
    emphasis is on portable libraries which
    work well with the C++ Standard Library.
    See http://www.bo...
    Download Boost C++ Libraries
  • More »

Linux commands