[gradsusr] Question regarding basemap.gs

[Sergey Varlamov]

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
>>
>>
>>
>> _______________________________________________
>> gradsusr mailing list
>> gradsusr at gradsusr.org
>> http://gradsusr.org/mailman/listinfo/gradsusr
>>     
> ------------------------------------------------------------------------
>
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
>