The interactive mode provides extended functionality.
The first menu if the interactive mode in the i.group program asks the user to select a group. If the group does not exist, the user will be asked if he or she would like to create a new group.
This program edits imagery groups. You may add raster map
layers to, or remove such layers from, an imagery group.
You may also create new groups.
Please enter the group to be created/modified
GROUP: _____________ (enter 'list' for a list of groups)
AFTER COMPLETING ALL ANSWERS, HIT <ESC> TO CONTINUE
(OR <Ctrl-C> TO EXIT)
If the word list is entered, groups that have
already been created in the user's current LOCATION_NAME
and MAPSET(S) will be listed. The second menu in
i.group provides the user with the following
options:
1. Select a different group
2. Edit group TITLE
3. Include new raster (cell) files in the group
or remove raster (cell) files from the group
4. Assign colors to the group
5. Create a new subgroup within the group
RETURN to exit
The options are described as follows:
Please enter the group to be created/modified
GROUP: _____________ (enter 'list' for a list of groups)
AFTER COMPLETING ALL ANSWERS, HIT <ESC> TO CONTINUE
(OR <Ctrl-C> TO EXIT)
If the word list is entered, groups that have
already been created in the current LOCATION_NAME and
MAPSET(S) will be displayed.
TITLE______________________________________
This option offers an opportunity to go back and change
the entry if it is not correct by asking: Look ok?
(y/n).
LOCATION: location GROUP: spot MAPSET: demo
If you wish to delete a file from group [spot], remove
the 'x' from in front of the file name.
x_ spot.1 in demo
x_ spot.2 in demo
x_ spot.3 in demo
AFTER COMPLETING ALL ANSWERS, HIT <ESC> TO CONTINUE
(OR <Ctrl-C> TO CANCEL)
Next,a menu listing all the other raster map layers present in the
current MAPSET(S) will be displayed:
LOCATION: location GROUP: spot MAPSET: demo
Please mark an 'x' by the files to be added in
group [spot]
MAPSET: demo
x_ composite1
x_ spotclass1
__ spotclass2
AFTER COMPLETING ALL ANSWERS, HIT <ESC> TO CONTINUE
(OR <Ctrl-C> TO CANCEL)
If more than one MAPSET is selected, menus for those
mapsets will also be displayed. All raster map layers
selected with an 'x' will be included in the group being
updated.
The user will then have the opportunity to check the contents of the group that was just modified:
Group [spot] references the following raster files
__________________
spot.1 in demo
spot.2 in demo
spot.3 in demo
composite1 in demo
spotclass1 in demo
__________________
Look ok? (y/n)
If the user responds with the letter y then the
following sentence is displayed on the screen:
Group [spot] updated!And the main menu for i.group returns.
If the user responds n, the menu containing the group files after it was modified will be displayed and the user will be asked to place an x in front of those raster map layers that are to be removed from the group. Then, a menu listing all of the other raster map layers in the current MAPSET will be displayed again, and the user will be again asked to place an x in front of raster map layers to be included in the group. This gives the user the opportunity to correct mistakes or make changes in the choice of raster map layers to be selected in a group without exiting i.group.
Please indicate which files to use for red, green, and
blue colors. You may leave any color out. You may
specify more than one color per file. However, each
color may only be specified once. For example, to get
a full color image, specify r,g,b for 3 different
files. To get a grey scale image, specify rgb for a
single file.
b__ spot.1
g__ spot.2
r__ spot.3
___ composite1
___ spotclass1
<<< r,g,b can only be specified once >>>
AFTER COMPLETING ALL ANSWERS, HIT <ESC> TO CONTINUE
(OR <Ctrl-C> TO CANCEL)
This menu allows you to select a color for each
imagery band or for each file
for display. Note, however, that composite images
and classified images are already assigned colors during their creation.
An opportunity to change the choice of colors is offered after escaping the menu by:
Look ok? (y/n)
LOCATION: location MAPSET: spot
GROUP: spot1
SUBGROUP: ___________ ('list' will show available
subgroups)
AFTER COMPLETING ALL ANSWERS, HIT <ESC> TO CONTINUE
(OR <Ctrl-C> TO CANCEL)
After selecting or creating a subgroup, this menu is displayed:
Mark an 'x' by the files to form subgroup [123]
x_ spot.1
x_ spot.2
x_ spot.3
__ composite1
__ spotclass1
AFTER COMPLETING ALL ANSWERS, HIT <ESC> TO CONTINUE
(OR <Ctrl-C> TO CANCEL)
The user is then given the opportunity to check the contents
of the subgroup:
Subgroup [123] references the following raster
(cell) files
__________________
spot.1 in demo
spot.2 in demo
spot.3 in demo
__________________
Look ok? (y/n)
If the user responds with the letter n, the group
menu will appear again enabling the user to select raster
map layers to form the subgroup.
Subgroup names may not contain more than 12 characters.
This program is interactive and requires no command line arguments.
i.cluster
i.maxlik
i.points
i.rectify
Last changed: $Date$