Ahh, because I have labels and other text already drawn on the image.
Squishing it alters the shape of the letters. And I have potentially many
of these coming out of WMS requests where I know the image size and corner
coords, but I can't alter the basic nature of the image. What I'd like to
do is use these images as figures in a report, so I need to be able to add
Axes with labeling, and also Figure titles and text.
Thanks,
Roger
--
On Tue, Dec 16, 2008 at 9:53 AM, Jeff Whitaker <jsw...@fastmail.fm> wrote:
> Roger André wrote:
>
>> 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
>>
>
> Roger: Sure, you could do that. I'm not sure why you would want to
> display an image that's not geographically square as a square though.
> What's wrong with just letting Basemap show it as a rectange?
>
> -Jeff
>
>> --
>>
>>
>> On Tue, Dec 16, 2008 at 4:43 AM, Jeff Whitaker <jsw...@fastmail.fm<mailto:
>> 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
>>
>>
>>
>
> --
> 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
>
>
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