[gradsusr] NCEP global SST data and GrADS

[Bill Reilly]

Gargi:

Thanks for your reply.

Your suggestion of using 'Set lon -80 110' isn't what I'm looking for... 
I don't want to plot from 80W to 110E, that gives me the western 
Atlantic Ocean to the eastern Indian Ocean... I'm trying to plot the 
Pacific Ocean.

With other datasets, using 'set lon 110 280' works perfectly, but with 
this SST data it doesn't work for some reason.

I've worked out a hack that will have to do for now until I find a 
proper way to do it:

'set lon 110 280'
'd sst'

'set lon -250 -80'
'd sst'

This plots the western half first and then the eastern half afterwards, 
but it involves hardcoding the lon values in the script so it will only 
work with predefined areas... It also involves a few extra steps and 
complicates the whole thing, so it's not ideal.

Thanks again for answering me... I apprecaite your help.

Bill

--

Bill Reilly

(+34) 686-110-748

bill at passageweather.com
www.passageweather.com


On 03/02/2018 02:20, Gargi Akhoury wrote:
> Hello,
>       There is a problem with sign. For example if you have to plot 
> from East and west then write
> 'Set lon -80 110'
>
> If u trying to plot south to north in grads then write
> 'Set lat -25 45'
>
> Each time grads plot from negative to positive not positive to negative.
>
> On 3 Feb 2018 6:25 a.m., "Bill Reilly" <bill_reilly at compuserve.com 
> <mailto:bill_reilly at compuserve.com>> wrote:
>
>     Hello:
>
>     I'm trying to display the NCEP global SST data using GrADS but I
>     can't get it to display data across the 180° meridian... It will
>     either display west of this meridian or east of it, but not both.
>
>     Using the North Pacific Ocean as an example, I want the plot to go
>     from 110°E to 80°W.
>
>     'set lon 110 280' only displays data WEST of 180°.
>
>     'set lon -250 -80' only displays EAST of 180°.
>
>     'set lon 110 -80' doesn't display anything.
>
>     'set lon 470 640' doesn't display anything.
>
>     Does anybody have any ideas how to fix this?
>
>     Thanks,
>
>     Bill
>
>     --
>
>     Bill Reilly
>
>     (+34) 686-110-748
>
>     bill at passageweather.com <mailto:bill at passageweather.com>
>     www.passageweather.com <http://www.passageweather.com>
>
>     bill at brwebworks.com <mailto:bill at brwebworks.com>
>     www.brwebworks.com <http://www.brwebworks.com>
>
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