Hi Jeff,
I checked, and no the images are not geographically square. I wonder if I
could approach this problem in a different way. Would it be possible for me
to add tick marks and annotation to the image without using the Basemap
module alone? My thinking is that I could bring the image into Matplotlib,
define a square figure, and then manually define the size of the X and Y
axes and label them. Is it possible to "decorate" an image this way,
without using any projection support?
Thanks for the help,
Roger
--
On Tue, Dec 16, 2008 at 4:43 AM, Jeff Whitaker <jsw...@fastmail.fm> wrote:
> Roger André wrote:
>
>> Hi All,
>>
>> I have some square images which were generated via WMS requests. I have
>> imported them into Matplotlib via pil_to_array, and then display them in a
>> Basemap instance where I have defined the projection as:
>>
>> m = Basemap(projection='cyl', lon_0=lon_0, llcrnrlon=ll_lon,
>> llcrnrlat=ll_lat, urcrnrlon=ur_lon,
>> urcrnrlat=ur_lat, suppress_ticks=False)
>>
>> While this works (it appears the tics are at the right places), the image
>> is no longer square, and I wonder if my projection definition is correct.
>>
>> Can someone show me what the correct Basemap parameters are for working
>> with images that are in EPSG:4326?
>>
>> Thanks,
>>
>> Roger
>>
>
> Roger: The image will only be square if ur_lon-ll_lon = ur_lat-ll_lat
> (i.e. the longitude range equals the latitude range). Is this the case?
> -Jeff
>
> --
> Jeffrey S. Whitaker Phone : (303)497-6313
> NOAA/OAR/CDC R/PSD1 FAX : (303)497-6449
> 325 Broadway Boulder, CO, USA 80305-3328
>
>
------------------------------------------------------------------------------
SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada.
The future of the web can't happen without you. Join us at MIX09 to help
pave the way to the Next Web now. Learn more and register at
http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/
_______________________________________________
Matplotlib-users mailing list
Matplotlib-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/matplotlib-users
