Hi Sudheer,
In the documentation about VECTOR/SET, you'll see this - the second
paragraph talks about VECTOR/SET and the skip qualifiers.
VECTOR/SET_UP
Performs all the internal preparations required by program
Ferret for vector plots but does not actually render output.
The command PPL can then be used to make changes to the plot
prior to producing output with the PPL VECTOR command. This
permits plot customizations that are not possible with Ferret
command qualifiers. See the chapter "Customizing
Plots".
Note that when the /SETUP qualifier is used
the /XSKIP and /YSKIP qualifiers are ignored. In this case,
use arguments to the PPL VECTOR command to achieve the
thinning.
PPL VECTOR/qualifiers,xskip,yskip
Then there's an example:
yes? USE coads_climatology
yes? VECTOR/SET uwnd,vwnd
yes? PPL axset,1,1,0,0
yes? PPL VECTOR,3,4 ! specifies XSKIP=3 and YSKIP=4
yes? ! If it were an overlay plot, that would be PPL VECTOR/OVER,3,4
So you need to put the skip values on the PPL VECTOR command.
Ansley
On 10/21/2011 1:31 AM, Sudheer Joseph wrote:
Dear users,
I am facing an issue below while
making vector plot. If I use vector/xskip=10/yskip=10 it works
where as if I use vec/set/xskip=10/yskip=10 it do not.
use monthly_navy_winds
vec /set/l=1 uwnd,vwnd
ppl vector
++++it produces a graph with all vectors plotted
vec /set/l=1/xskip=10/yskip=10 uwnd,vwnd
ppl vector
++++It produce the same graph as above
++++ but If I uses
vec /l=1/xskip=10/yskip=10 uwnd,vwnd
++++it skips the vectors !!
Why is this strange behavior ?
--
with best regards
Sudheer
**********************************************************************************
Sudheer Joseph
Scientist
INDIAN NATIONAL CENTRE FOR OCEAN
INFORMATION SERVICES (INCOIS)
MINISTRY OF EARTH SCIENCES, GOVERNMENT OF INDIA
"OCEAN VALLEY" PRAGATHI NAGAR (BO)
OPP.JNTU, NIZAMPET SO
Andhra Pradesh, India. PIN- 500 090.
TEl:+91-40-23044600(R),Tel:+91-9440832534(Mobile)
Tel:+91-40-23886047(O),Fax:+91-40-23892910(O)
E-mail: sudheer.joseph@xxxxxxxxx; sjo@xxxxxxxxxxxxx.
Web- http://oppamthadathil.tripod.com
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