[gradsusr] Question regarding basemap.gs

[Sam Wilson]

Thanks so much Sergey and for all who replied. Once I reach the goal,  
I will reply back and let you all know the route I took - for others  
who may be interested.

Cheers,
Sam

On Feb 2, 2012, at 6:45 PM, "Sergey Varlamov" <vsm at jamstec.go.jp> wrote:

> Hi, Sam
>
> I think that the best solution for you could be to use new grads 2
> feature - plotting the map using shape files.
> Please see the grads documentation - in addition to the
> "how to" receipts it also includes the list of free shape files  
> sources
> for downloading.
>
> For "country" scale the resolution of public shape files is usually  
> higher
> than that in grads "worldmap" data set and all polygons could be  
> filled.
> Just test it well, as my "games" with large number of simultaneously
> plotted shape files couple of times resulted in "quiet" crash of
> linux x-sessions with all work lost, like in old Windows.
> May be the old version of suse linux I am using is an issue,
> but grads and supplibs including shapefiles library were re-build by  
> me
> from the latest COLA version.
>
> Best regards,
> Sergey Varlamov
>
> JAMSTEC, Yokohama
>
> James T. Potemra wrote:
>> Hi Sam:
>>
>> I get the same behavior, but if you precede the "basemap" call with a
>> "set mpdset hires", it seems to work.
>>
>> Jim
>>
>> On 2/1/12 1:16 PM, Sam Wilson wrote:
>>> Hi all,
>>>
>>> I am generating standard wave height charts in various parts of the
>>> world using grads and I recently ran into an issue that confused me
>>> using basemap.gs in one of my scripts.
>>>
>>> I want the best land representation possible, so I used the high res
>>> option with basemap (e.g. basemap L 0 1 H).  I've compared the land
>>> using the high res option with the land using the medium res option.
>>>
>>> In areas surrounding the US, the land using the high res option  
>>> looks
>>> much better.  However, this does not appear to be the case in other
>>> places I've checked around the world (e.g. Portugal, Indonesia,  
>>> South
>>> Africa). As an example, I've attached 2 images for Portugal.  In the
>>> first image (basemap_mres) I've used the medium res option with
>>> basemap.  In the second image (basemap_hires), I've used the high  
>>> res
>>> option.  As you can see, the land is significantly degraded using  
>>> the
>>> high res option.
>>>
>>> As a sanity check, I re-downloaded the high res lpoly and opoly
>>> files, but I get the same thing.
>>>
>>> As always, any help on this matter is greatly appreciated.
>>>
>>> Best Regards,
>>> Sam
>>>
>>>
>>>
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