GRASS and river classification
N R A
nra at cix.compulink.co.uk
Wed Jun 15 09:44:00 EDT 1994
Can anyone provide any information on this problem.
Our organisation carrys out an annual classification of the English &
Welsh rivers. This ranges from 1A (excellent) to 4 (poor). We can produce
maps that show the various stretchs of the rivers coloured according to
classification on our old mainframe system - it uses a series of
classification points which have a certain class and apply upstream along
the river until another class point is found.
I'd like to use GRASS to create these maps - the question is how ??
We have the rivers as a vector dataset and I've loaded and plotted these.
How can I get different parts plotted in a colour corresponding to the
value of a point or do I have to somehow create a vector set for each
year of classification - but this would involve storing the coordinates
Thanks in advance for any help,
NRA North West
e-mail : nra at cix.compulink.co.uk (use this for general usage)
or sculshaw at cix.compulink.co.uk (Private - only checked at best
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