Need a hint - how to automatically draw "H" and "L" into a pressure chart

[Stephen R McMillan]

Stefan,
For "H" example, try
'draw string 'x' 'y' H' where x and y are screen coordinates. Use 'set 
font...',  'set strsiz...' and 'set string...' before the draw for 
additional controls.

Stephen



Stefan Gofferje <gradsusers at GOFFERJE.HOMELINUX.ORG> 
Sent by: GRADSUSR at LIST.CINECA.IT
02/18/2008 03:00 PM
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GRADSUSR at LIST.CINECA.IT by 02/20/2008


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Need a hint - how to automatically draw "H" and "L" into a pressure chart





Hi,

I guess, I asked this already a couple of days ago but maybe I was not
explaining it the right way.

On my weather project, I have some pressure charts like this:

http://www.saakeskus.fi/index.php?function=showpic&chart=NORDIC-prmsl&number=100#top


What I would like to do is automatically draw "H" and "L" to the
appropiate point of the chart like here:

http://www.wetterzentrale.de/pics/Rtavn061.png

or here:

http://www2.wetter3.de/Animation_12_UTC/00_1.gif

I really have been thinking on how to do this but I have no idea.
Could anybody give me a hint on that?

Tervehdys Suomesta,
Stefan Gofferje

--
Since light travels faster than sound, is that why some people appear
bright until you hear them speak?




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