Philippp imported from SE
I am writing my own latex beamer style. I want to use different background graphics depending on the aspect ratio chosen in the documentclass in the main file, like
`\documentclass[12pt, aspectratio=169]{beamer}`

So how can I access the value of aspectratio in my .sty file?
Top Answer
One way could be to use the `\ifdimcomp{⟨dimen expression⟩}{⟨relation⟩}{⟨dimen expression⟩}{⟨true⟩}{⟨false⟩}` macro to test for different paperwidths (and height in case of `169` and `1610`):

    %	aspectratio=43
Query beamer document class option aspectratio in a .sty file

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