On 01/12/11 07:40, Glynn Clements wrote:
Moritz Lennert wrote:
I'm pretty sure someone has already answered this, but cannot get my
hands on the relevant mail: which grass python lib function should I use
and how in order to be able to feed r.recode, r.reclass, r.colors, etc
rules on the fly ?
feed_command() or write_command().
The former returns a Popen object, so you can write to its .stdin
member. You need to call p.stdin.close() and p.wait() once you're
done.
The latter accepts the input as a string via the stdin= parameter,
waits for completion and returns the exit status.
Thanks, write_command() is perfect for me !
Just one question using it with r.recode:
When I use it without a rules parameter it works, but when I use it with
rules='-' it gives me 'ERROR :Unable to open file <->'. Is this expected
behaviour ?
Moritz
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