hi,
I have 6 different training data sets .How should I perform supervised classification with those data.Which commands should I use in GRASS to classify my image into six groups.
Can anybody help?
uttam.
_________________________________________________________________
Want free fuel? Get IOC Citibank card. http://server1.msn.co.in/msnleads/citibankcards/ioc.asp Drive your dreams!
On Mon, May 26, 2003 at 05:47:20PM +0530, Uttam Kumar wrote:
hi,
I have 6 different training data sets .How should I perform supervised
classification with those data.Which commands should I use in GRASS to
classify my image into six groups.
Can anybody help?
In general you have several choices:
Summary of the standard GRASS reclassification techniques:
1 2 3 4
|radiometric, | radiometric,| radiometric,| radio- and geo-
|unsupervised | supervised | supervised | metric, supervised
--------+-------------+-------------+-------------+-------------------
Preproc.|i.cluster |i.class | i.gensig | i.gensigset
| |(monitor) | (from maps) | (from maps)
--------+-------------+-------------+-------------+-------------------
Compu- |i.maxlik | i.maxlik | i.maxlik | i.smap
tation | | | |
--------+-------------+-------------+-------------+-------------------
So the columns (3) and (4) may apply to your question.
Markus Neteler