Re: [Matplotlib-users] Basemap/ orthographic projection plot doesn't respect globe boundary

[Jakob M. <jak...@gm...>]

2011/9/8 Jeff Whitaker <js...@fa...>:
> On 9/8/11 1:51 AM, Jakob Malm wrote:
>>
>> Picking up on an old thread. Hopefully Jeff is still listening in...
>>
>> On 2010-04-04 23:24, Jeff Whitaker wrote:
>>>
>>> On 4/4/10 11:06 AM, Will Hewson wrote:
>>>>
>>>> Hi again Jeff et al...
>>>>
>>>> I've had a play around with the extra few lines of code - on paper this
>>>> seems like it should solve the problems I'm experiencing. However, an
>>>> error's being thrown up by the transform scalar function, as my lons and
>>>> lats won't necessarily be increasing. The data I'm plotting is satellite
>>>> data and so at the beginning and end of the orbit file lats go over the
>>>> pole
>>>> from 90 to -90, with a similar problem for the lons - whereby the data
>>>> is
>>>> taken across the satellite track. I've thought about sorting the data
>>>> before
>>>> passing it to transform_scalar but I'm always going to be left with the
>>>> problem in either lats or lons.
>>>>
>>>> I've uploaded the file I'm currently working with this time. It's three
>>>> columns of lons, lats and z values.
>>>>
>>>> Once again, many thanks for your help.
>>>>
>>>> Will.
>>>>
>>>> http://old.nabble.com/file/p28133659/test.plt test.plt
>>>>
>>> Will:  Is it a regular lat/lon grid or a satellite swath?  If it's the
>>> latter, you can't use my solution.
>>>
>>> -Jeff
>>
>> What if it _is_ a satellite swath? Can I get around the problem of
>> off-projection plotting with Basemap.pcolormesh()?
>> Example code and plots can be found at
>>
>> http://pythonbits.blogspot.com/2011/09/i-have-problem-with-basemap-plotting.html
>>
>> Thanks,
>> Jakob Malm
>>
>
>
> Jakob: I think that's the price you pay for the speed of pcolormesh (vs
> pcolor).  It appears to make more assumptions about the structure of your
> data. I don't see any way around it.
>
> -Jeff
>

Hmm... I believe I have been able to get around it previously, but
perhaps I just fell back to using pcolor...

Thanks,
Jakob