[gradsusr] plot legend with virtual (no real) value

Fri May 31 22:51:15 EDT 2013

Dear all users

I'd like to plot virtual (no real) legend.
For. real value is 140, but we can see it as 40 in legend when ploting
   or real value is 180, but we can see it as 80 in legend when ploting ...

Could anyone comment me please?
Thank you
Best regards

-- 
(Mr.) Ta Huu Chinh
National, Weather Forecasting Center, Ha Noi, Viet Nam.
No: 4th, Dang Thai Than, Hoan Kiem, Ha Noi
Tel: 84-903-298-856
Office: 84-43-824-4917
Email: chinhth2010 at gmail.com
Website: http://vn.myblog.yahoo.com/chinhth2005/
Website: http://bestknowledge-chinhth.blogspot.com/
Website: http://anhcuoidep.vn
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