[ncl-talk] Map Coming Up Short

[Barry Lynn]

Hi:

I have attached both the output and ncl program that reads WRF data and
plots using gsn.

It sets the grid as "Lambert Conformal" and reads the true latitudes and
standard longitude from the WRF file.

It also overlays data using an Opacity factor.

Lastly, it uses "mask" to plot land vs ocean topography over which the snow
forecast is overlaid.

Thank you for your help.

On Thu, Jan 12, 2017 at 7:15 PM, Adam Phillips <asphilli at ucar.edu> wrote:

> Hi Barry,
> I am guessing that the data is being drawn to the boundary of the data
> coordinates of your overlay plot. You will not be able to get NCL to draw
> anything outside of the data coordinates. Thus, short of interpolating your
> data to a different grid, I believe your only choice would be to try
> different map projections and map limits. This will only truly be done via
> trial-and-error. You will want to set mpProjection along with various
> mpLimitMode related resources. (You are already setting
>  mpMinLatF/mpMaxLatF/mpMinLonF/mpMaxLonF with mpLimitMode = "LatLon" (the
> default)., and plotting on a cylindrical equidistant projection (again, the
> default).)
>
> The NCL examples website has numerous examples. http://www.ncl.ucar.edu/
> Applications/, specifically see the Map Projections examples. As you
> stated that your data is on a Lambert grid, you might want to start with
> the Lambert Conformal examples.
>
> Hope that helps. If not, please respond to the ncl-talk email list.
> Adam
>
> On Mon, Jan 9, 2017 at 9:17 AM, Barry Lynn <barry.h.lynn at gmail.com> wrote:
>
>> Hi:
>>
>> I am excerpting a part of the WRF domain to make a snow accumulation plot.
>>
>>   snowh_rate_dom  = (/snowh_rate(y_start:y_end,x_start:x_end)/)
>>
>> Perhaps because the WRF domain (WPS) setting was Lambert, I get a blank
>> area on the far right lower side (the overlay of snow does not extend all
>> the way to the boundary).
>>
>> is there a way to force/cut-out the overlay so that it falls to the
>> boundary?
>>
>> Barry
>> --
>> Barry H. Lynn, Ph.D
>> Senior Lecturer,
>> The Institute of the Earth Science,
>> The Hebrew University of Jerusalem,
>> Givat Ram, Jerusalem 91904, Israel
>> Tel: 972 547 231 170
>> Fax: (972)-25662581
>>
>> C.E.O, Weather It Is, LTD
>> Weather and Climate Focus
>> http://weather-it-is.com
>> Jerusalem, Israel
>> Local: 02 930 9525
>> Cell: 054 7 231 170
>> Int-IS: x972 2 930 9525
>> US 914 432 3108 <(914)%20432-3108>
>>
>> _______________________________________________
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>>
>
>
> --
> Adam Phillips
> Associate Scientist,  Climate and Global Dynamics Laboratory, NCAR
> www.cgd.ucar.edu/staff/asphilli/   303-497-1726 <(303)%20497-1726>
>
> <http://www.cgd.ucar.edu/staff/asphilli>
>



-- 
Barry H. Lynn, Ph.D
Senior Lecturer,
The Institute of the Earth Science,
The Hebrew University of Jerusalem,
Givat Ram, Jerusalem 91904, Israel
Tel: 972 547 231 170
Fax: (972)-25662581

C.E.O, Weather It Is, LTD
Weather and Climate Focus
http://weather-it-is.com
Jerusalem, Israel
Local: 02 930 9525
Cell: 054 7 231 170
Int-IS: x972 2 930 9525
US 914 432 3108
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