define independant data set

Bernd Becker bernd.becker at METOFFICE.GOV.UK
Wed Apr 29 11:30:19 EDT 2009


Hello,

this is an odd question:

can one define a data set in grads independent from any external data
set?

How do you:

define x='1 2 3 4 5 6 7 8 9'
define y=x*x

d y

and get an y ver. x  line plot ?


The background:

I compiled event statistics by mask and const,
count some numbers at individual grid points,
constructed a curve, or at least the vector for it
and now I want to plot it.

I can draw a line, scaling the numbers to the plot window.
That looks really bland.
I also like to get appropriate axis and other nice bits.

Any ideas how to do that?

t = 0
sum = 1
scalex  =  6.5/32.
scaley  =  5.5/1.
xstr=''
ystr=''
linestr=''
while ( t <= 32       )
    xstr= xstr ' '     t ' '
    ystr= ystr ' ' cdf.t ' '

    xx  = 1 + t* scalex
    yy  = 1 + cdf.t* scaley
    linestr= linestr' ' xx ', ' yy   ', '

    t = t + 1
endwhile

* plot cdf

say         linestr
'draw line 'linestr

cdf.t are numbers [ 1, 0 ] over 32 steps.

--
Bernd Becker   The Monthly Outlook
Met Office  FitzRoy Road  Exeter   Devon EX1 3PB  United Kingdom
Tel.: +44 (0) 1392 884511 Fax: +44 (0)870 900 5050
E-mail:bernd.becker at metoffice.com  -  http://www.metoffice.com



More information about the gradsusr mailing list