ValueError: Images of type float must be between -1 and 1.

[Christopher]

Hi! Thanks for the reply

The reason I wanted to use img_as_float is because I eventually plan to use 
many functions and I thought I should get the image into a format that 
scikit-image likes before proceeding. However, as you suggested, the 
function I want to use immediately is transform.rotate() which does have a 
preserve scale option, and that did fix my problem. Should I just use this 
on every function?
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