I am presenting a poster at a conference and need to include a figure as background information. Given that it is properly cited, is it okay to include a figure I did not make in an academic poster for a conference? Should posters contain only figures made by the presenter? Would it be seen as unprofessional?
If there's something essential in the figure that you're including that you and your research group can't reproduce on your own, then it's justifiable to include a plot or other figure produced by someone else and already published in the literature. However, such usage should be restricted to only what is essential for your poster—you should never use others' work merely to "fill out" your poster.