:weather script - calling SED heads ! [longish]

[William Park]

On Thu, Sep 30, 2004 at 02:32:37PM -0400, David J Patrick wrote:
> MATCH:
>         celsius = 18
>         pressure = 30.06 in / 1018 hPa 
>         temperature_celsius = 18
>         place = Toronto
>         windchill_celsius = 
>         wind = 9 mph 15 km/h from the SSW 
>         fahrenheit = 64
>         updated = 1:00 PM EDT on September 30, 2004
>         windchill_fahrenheit = 
>         conditions = Clear
>         temperature_fahrenheit = 64
>         humidity = 59

Given above input, the desired output 

    > Toronto @ 1:00 PM EDT
    > celsius = 18
    > conditions = Clear
    > humidity = 59
    > pressure = 30.06 in / 1018 hPa 
    > wind = 9 mph 15 km/h from the SSW 

can be obtained as follows, using standard shell:

    while read a eq b; do
	case $a in 
	    celsius|conditions|humidity|pressure|wind) echo "$a = $b" ;;
	    place) place=$b ;;
	    updated) updated=$b ;;
	esac
	echo "$place @ ${updated% on *}"
    done < weather.sc | sort
    

> Using location:             43.400000N, 79.240000W
> Date:                       30 Sep 2004 
> Local time:                 13:46 
> Day length:                 11:45 hours
> With civil twilight         12:39 hours
> With nautical twilight      13:45 hours
> With astronomical twilight  14:52 hours
> Length of twilight:  civil   0:26 hours
>                   nautical   1:00 hours
>               astronomical   1:33 hours
> Current specified time zone: EDT (-4 from UTC) 
> Sun transits meridian 1306 EDT
>                    Sun rises 0715 EDT, sets 1857 EDT
>        Civil twilight starts 0646 EDT, ends 1926 EDT
>     Nautical twilight starts 0613 EDT, ends 1959 EDT
> Astronomical twilight starts 0540 EDT, ends 2032 EDT

Given above input data, the desired output

    > Sun rises 0715 EDT, sets 1857 EDT

can be obtained by

    sed -n '/Sun rises/s/^ *//p' < astro.sc

-- 
William Park <opengeometry-FFYn/CNdgSA at public.gmane.org>
Open Geometry Consulting, Toronto, Canada
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