to_image() method does not take extra arguments

[OisinMoran]

First of all, I'd just like to thank you so much for this incredible tool!

In the README it is stated that the to_image() method takes conversion_kwargs and links to this which has parameters such as background, yet the only parameter it actually seems to take is resolution. This leads to errors such as to_image() got an unexpected keyword argument 'background' when attempting to change the default background. Am I doing something wrong or does the documentation not quite match up with the functionality? If so is there a work-around or if not I'd be more than happy to contribute to try and add this functionality.

README

Method	Description
.to_image(**conversion_kwargs)	Returns an instance of the PageImage class. For more details, see "Visual debugging" below. For conversion_kwargs, see here.

Function

    def to_image(self, resolution=None):
        """
        For conversion_kwargs, see http://docs.wand-py.org/en/latest/wand/image.html#wand.image.Image
        """
        from .display import PageImage, DEFAULT_RESOLUTION
        res = resolution or DEFAULT_RESOLUTION
        return PageImage(self, resolution=res)

[jsvine]

Hi @OisinMoran, and thank you for flagging this! That does seem to be a bug. I'll aim to fix it in a future release. In the meantime, I think you should be able fix it locally by changing that function to the following:

    def to_image(self, **conversion_kwargs):
        """
        For conversion_kwargs, see http://docs.wand-py.org/en/latest/wand/image.html#wand.image.Image
        """
        from .display import PageImage, DEFAULT_RESOLUTION
        kwargs = dict(conversion_kwargs)
        if "resolution" not in conversion_kwargs:
            kwargs["resolution"] = DEFAULT_RESOLUTION
        return PageImage(self, **kwargs)

Does that fix the bug for you?

[jsvine]

Should be fixed in v0.5.11! Feel free to re-open this issue, though, if the problem persists for you.