[ncl-talk] mask ocean areas

[Sri Nandini]

Hello

Here i attach a plot using the same method as in mask_5.ncl example==>HOWEVER, the landsea.nc mask is quite coarse and covers large grid points.
Is there a landsea mask available for 1x1 resolution?






On Mar 5, 2018 11:06:13 PM, Dennis Shea wrote:

> Further ....
> 
> NCL is distributed with a simple 1x1 global mask. This may be adequate for your needs.
> 
> https://www.ncl.ucar.edu/Applications/mask.shtml
> Example 5
> 
> ----

> https://www.ncl.ucar.edu/Document/Functions/Shea_util/landsea_mask.shtml
> 
> The function indicates that multiple libraries must be loaded. 
> However, if you have 6.2.0 onward these libraries are automatically loaded.
> 
> ---
> Good luck

> On Mon, Mar 5, 2018 at 1:58 PM, Adam Phillips > <> asphilli at ucar.edu> >>  wrote:
> > Hi Sri,
> > > > To add to Mary's reply you can also tell NCL to color fill the ocean basins last, thereby applying a graphical mask. > > Example:
> > res at mpFillOn = True
> > > > res at mpFillColors = (/-1,0,-1,-1/)   ; set ocean to white, see: > > http://www.ncl.ucar.edu/Document/Graphics/Resources/mp.shtml#mpFillColors
> > > > res at mpFillDrawOrder = "PostDraw"   ; do the map fill 
> > res at mpPerimDrawOrder = "PostDraw"   ; and perimeter draw last
> > > > res at mpOutlineDrawOrder = "Draw"        ; draw the map outlines second
> > > > res at cnFillDrawOrder = "PreDraw"          ; draw the color-filled contours first
> > 
> > 
> > Adam 

> > 
> > On Mon, Mar 5, 2018 at 1:06 PM, Mary Haley > > <> > haley at ucar.edu> > >> >  wrote:
> > > Hi,
> > > 
> > > Please see our masking examples at:
> > > 
> > > http://www.ncl.ucar.edu/Applications/mask.shtml

> > > In particular, you may want to look at example mask_5.ncl which uses the landsea_mask function, or example mask_12.ncl which uses a shapefile to do the masking.
> > > 
> > > --Mary
> > > 

> > > 
> > > On Mon, Mar 5, 2018 at 9:50 AM, Sri Nandini > > > <> > > snandini at marum.de> > > >> > >  wrote:
> > > > Hello
> > > > 
> > > > I am trying to mask out ocean areas in my plot. 
> > > > Could someone please help me out with this? Is there mask data i can download from NCL?
> > > > 
> > > > 
> > > > 
> > > > 

> > > > _______________________________________________
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> > 


> > > > -- 
> > Adam Phillips 

> > > > Associate Scientist,  > > Climate and Global Dynamics Laboratory, NCAR

> > 
> > > > www.cgd.ucar.edu/staff/asphilli/> >    > > 303-497-1726> >  
> > 

> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > > > 

> > > > 

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