[ncl-talk] rangs database - northern latitude oddity

[Micah Sklut]

Thank you Mary! The MediumRes works pretty good, however, I was hoping to
test out the RANGS database for this particular data map. I will give the
shapefiles a try.

On Fri, Oct 31, 2014 at 1:45 PM, Mary Haley <haley at ucar.edu> wrote:

> The RANGS database does not work for global data.  Our documentation
> didn't make this clear, which I've tried to fix.
>
> If you really want better coastlines for global data, I suggest first
> trying:
>
>   res at mpDataBaseVersion = "MediumRes"
>
> If this doesn't give you want you need, then I suggest using shapefiles.
> You can get the GSHHS/RANGS data base as a shapefile from:
>
> http://www.ngdc.noaa.gov/mgg/shorelines/data/gshhg/latest/
>
> Then use "gsn_add_shapefile_polylines" to attach the shapefile outlines to
> your plot.  There are several shapefiles provided in the zipped file, so
> you'll have to look at the README file to decide which one you want.
>
> I've attached an NCL script that you can use to compare three different
> sets of map outlines.
>
> --Mary
>
>
> On Fri, Oct 31, 2014 at 10:56 AM, Kyle Griffin <ksgriffin2 at wisc.edu>
> wrote:
>
>> Hi Micah,
>>
>> I don't know the specifics of how the RANGS maps are drawn, but I wonder
>> if this change in 6.2.0 has something to do with it? I might be completely
>> off-base here as well.
>> http://ncl.ucar.edu/prev_releases.shtml#ChangesToMapDrawingBehavior6.2.0
>>
>>
>> Kyle
>>
>> ----------------------------------------
>> Kyle S. Griffin
>> Department of Atmospheric and Oceanic Sciences
>> University of Wisconsin - Madison
>> Room 1421
>> 1225 W Dayton St, Madison, WI 53706
>> Email: ksgriffin2 at wisc.edu
>>
>> On Fri, Oct 31, 2014 at 11:51 AM, Micah Sklut <micahs2005 at gmail.com>
>> wrote:
>>
>>> I noticed, when using the RANGS coastline database, I see some odd
>>> things in the northern latitudes (white lines that go across the globe. I
>>> am plotting a Mercator projection. In contrast, when I plot using Ncarg_1,
>>> everything looks normal.
>>>
>>> Please see the attached image. I am doing a mapFill in white over the
>>> data. Please see the attached image.
>>>
>>> --
>>> Micah Sklut
>>>
>>>
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>


-- 
Micah Sklut
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