Re: [Matplotlib-users] Problem with text bounding box

[Eric F. <ef...@ha...>]

On 2012/09/03 9:36 PM, Jakob Gager wrote:
> On 09/04/2012 09:13 AM, Eric Firing wrote:
>> On 2012/09/03 8:33 PM, Jakob Gager wrote:
>>> On 09/03/2012 08:57 PM, Eric Firing wrote:
>>>> It looks like you can either use the _get_layout() method (which
>>>> requires that you specify the renderer), or, if you know the text object
>>>> will be among the last 50 for which _get_layout() has been called, you
>>>> can use txt1.cached[txt1.get_prop_typ()].
>>>>
>>>> Eric
>>>
>>> Many thanks for the quick and valuable return. I now use the _get_layout() method and
>>> it works like a charm :)
>>>
>>> Just replaced:
>>> sf1 = 6*72./txt1.cached.items()[0][1][1][0][1][0]
>>> with:
>>> sf1 = 6*72./txt1._get_layout('GTKAgg')[1][0][1][0]
>>
>> Jakob,
>>
>> What is actually happening here is that the first two lines of
>> _get_layout() are equivalent to the second method I suggested (that's
>> where I got the idea for that method), and the renderer argument is
>> never being used. This is good, because the renderer argument would have
>> to be a renderer instance, not the string name of a backend.
>>
>> There is also the caution that the leading underscore means
>> _get_layout() is intended for internal mpl use only, and subject to
>> change without notice. So, with some future version of mpl, you may need
>> to change your code again.
>>
>> Eric
>>
> Hi Eric,
>
> does this mean you would suggest to use txt1.cached[txt1.get_prop_tup()] to be on the save side for
> future versions? I'm aware of the leading underscore notation, however, the txt.cached dictionary has
> changed as well (without leading underscore and notice?), therefore, slight modifications in the scrips
> cannot be precluded anyway.

You are right; although it lacks the underscore, I doubt the "cached" 
attribute and the "get_prop_tup()" method were intended for anything but 
internal use.  There is no safe solution!

>
> Regarding the renderer argument...
> I first thought about passing a renderer instance to the _get_layout method, but as I had no clue where
> to get this instance from. So I simply tried with the backend name and luckly it worked :).

That's the advantage of the txt1.cached[] approach; it doesn't require 
you to supply a bogus but unused argument.  It's probably what I would pick.

In any case, I'm glad you are back in business.

Eric

>
> Thanks again, and have a nice day!
> Jakob
>
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and
> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>