And/or logic in IRAF

Elden Paul Iverson wrote on Jul 27, 2007

Is there and/or logic in IRAF and if so do you have any short examples of its use. I am trying to use it in a match command.

i.e. match ("light" or "object", "datalist1", > "datalist2")

Thanks,
Paul

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SongHuang wrote on Jul 27, 2007

and is &&

or is ||

I just know this works on the tselect

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Mike Fitzpatrick wrote on Jul 27, 2007

In the case of MATCH, and generally, you can't logically and/or params as in your example. To OR: run the task twice. To AND: pipe the results of one match into another, e.g.

cl> match ("foo", "data") | match ("bar", "STDIN", .> "datalist2")

Otherwise it's up to the task whether things like this are supported directly.

-Mike

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Last post on Jul 27, 2007