Jeff: in the end, i decided to suspend this kind of approach to problem,
but should give it a try in the future. thanks for suggestion.
-Yasin
2012/6/14 Jeff Whitaker <jeffrey.s.whita...@noaa.gov>
> On 6/14/12 7:52 AM, Yasin Selçuk Berber wrote:
>
> I want to set a projection area larger than data's geographical coverage.
>
> But data must still be georeferenced correctly inside map region
> and coastlines in projection area should still be visible outside data
> area.
>
> right now, the data is always stretched inside whole projection area.
>
> trying to mimic with characters:
>
>
> --right now--
>
> ulcorner
> _______________________
> | p r o j. a r e a |
> | |
> | w h o l e |
> | d a t a |
> | i s |
> | s t r e t c h e d |
> | |
> -----------------------| lrcorner
>
>
> --what i try to do--
>
> ulcorner
> _______________________
> | |
> |__________ this |
> | | is |
> | this |projection |
> | is | area |
> | data | |
> | | |
> -----------------------| lrcorner
>
>
> Code below certainly does not work and stretch data to full projection
> region:
>
> -------------------------
> *code skipped*
>
> m = Basemap(projection='merc',llcrnrlat=37,urcrnrlat=42,\
> llcrnrlon=24,urcrnrlon=34,resolution='i')
>
> m.imshow(data, cmap=plt.cm.jet, interpolation='nearest')
>
> plt.show()
>
> *code skipped*
> ---------------------------
>
> i fiddled with imshow's extent and clip_box keywords but since could not
> get it work. and googling for a serious amount of time didnt help either.
> Some posts on web mentioned bbox or set_autoscale_on related things but i
> cant seem to get it. Any ideas ?
>
> thanks.
>
>
> --
> Yasin Selçuk Berber
> "Bismillah, her hayrın başıdır."
>
>
> Yasin: If you use pcolor or contourf, you can specify the x,y (map
> projection) coordinates of the data grid, and the data will be plotted on a
> subset of the map projection region. imshow (which doesn't take x,y
> coordinates) just fills the whole plotting region with an image. If you
> want to use imshow, perhaps you could define an inset map (with no
> coastlines drawn) inside your larger map, and plot the image on the inset
> map.
>
> -Jeff
>
> --
> Jeffrey S. Whitaker Phone : (303)497-6313
> Meteorologist FAX : (303)497-6449
> NOAA/OAR/PSD R/PSD1 Email : jeffrey.s.whita...@noaa.gov
> 325 Broadway Office : Skaggs Research Cntr 1D-113
> Boulder, CO, USA 80303-3328 Web : http://tinyurl.com/5telg
>
>
--
Yasin Selçuk Berber
"Bismillah, her hayrın başıdır."
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