Hi,
first you have to make sure GRASS tools are enabled in the plugins. Then
the GRASS toolbar should appear, by default somewhere in the top
horizontal icon bars, I have it moved to vertical position on the right.
I am not in Windows right now, so using some old screenhots:
In the QGIS 1.x (I believe your USB GIS toolbox has QGIS 1.8), the icon
bar looked like this:
https://drive.google.com/file/d/0B2L2ha0SMJJGVXc3Zzhxb0Y3YnM/view?usp=sharing
In the QGIS 2.x, it looks like this:
https://drive.google.com/file/d/0B2L2ha0SMJJGX041RWxXbkFvNlk/view?usp=sharing
Most of the icons would be disabled as in the second screenshot, until
you open or create a GRASS mapset using one of the two first icons.
After the mapset is opened, the GRASS toolbox in QGIS can be opened by
the icon with hammer and branch (third from the end).
The toolbox looks like this:
https://drive.google.com/file/d/0B2L2ha0SMJJGMDJnSEVJaUt0WkE/view?usp=sharing
Many GRASS tools (commands) are available through either of the two
module tabs. But any GRASS command can also be run from the commandline.
It is the first module in the module tree. This way you can start even
the full GRASS GUI using the commad g.gui. Or you can run individual
GRASS tools, like
r.info, etc. (running without parameters will open GUI
dialog of the GRASS command). The difference is, that this way you
leverage all GRASS commands (not all are covered by the QGIS
GRASS-toolbox modules), all their options (again, not all options are
covered by most QGIS modules) and that you do not need a map layer
loaded into the map to use it as an input of a GRASS tool (the QGIS
modules require input map layers loaded in QGIS map first).
Hope this helps,
Regards,
Tomas Brunclik
Dne 20.10.2014 v 13:39 Christophe C napsal(a):