have alternative text for figures (alt), but no caption
or even have an alternative text that's different from the caption.
At the moment it seems both are controlled by the chunk parameter fig.cap.
To disable figure captions in the whole document, the fig_caption config param didn't work so I resorted to CSS in this minimal example with @rlesur's help.
in the markdown header options?
I understand you want to disable figure captions throughout the whole book, but the only other option I found at the moment is to put a "\" at the end of the image chunk, eg.
\
let me know if this is still an issue and I can try again