[GRASS-user] problem with reprojection of Hydro1k data

[FAROUX STEPHANIE]

I try the v.in.region + v.proj + g.region +  r.proj process (explained 
in the r.proj page) with a region whose reprojection doesn't allow to 
get a closed boarder: the projection of the raster doesn't work. Is it 
normal?
Thank you

FAROUX STEPHANIE wrote:
> I did it; results are not exactly the same but it's not enough because 
> gaps between continents are still more important.
>
> FAROUX STEPHANIE wrote:
>> Thank you for your answer Markus.
>> I didn't read the note in the r.proj page. I will try again and then 
>> we will see.
>> Stéphanie
>>
>> Markus Neteler wrote:
>>> Stéphanie,
>>>
>>> On Fri, Feb 13, 2009 at 2:18 PM, FAROUX STEPHANIE
>>> <stephanie.faroux at meteo.fr> wrote:
>>>  
>>>> Hello,
>>>> First i'd like to know if anybody already used the Hydro1k data 
>>>> from USGS?
>>>> I try to make global maps of parameters from continental ones.
>>>> The initial projection is lambert azimutal equal area, with different
>>>> latitude and longitude of origins for different continents. I 
>>>> defined one
>>>> location by continent; then i reprojected all maps in a latlon global
>>>> location, with WGS84 datum.
>>>> There are gaps between continents, for example between Asia and 
>>>> Europe and
>>>> between Europe and Africa.
>>>> I wonder if the problem comes:
>>>> - from the data which don't perfectly cover the earth
>>>>     
>>>
>>> ... could be possible, I didn't try with Hydro1k data from USGS.
>>>
>>>  
>>>> - from my reprojection in grass
>>>>     
>>>
>>> How did you do that? Say, did you use the v.in.region trick
>>> mentioned in the r.proj manual page which helps a lot?
>>>
>>> Markus
>>>
>>>   
>>
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>
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