To repeat and therefore emphasize information explained within the discussion
To provide supplemental information to the discussion i.e., information that isn't critical to the discussion but that may be of interest to the reader
To present information that is more easily understood in a diagram or illustrative drawing than via expression in the text
To add an illustration to the document
The same font and size as in the rest of the document (e.g., Times New Roman, 12 pt)
Simple sans serif in a legible size (e.g., Arial, 8-14 pt)
A condensed font in a small size to get as much information as possible in the figure (e.g., TW Cen MT Condensed, 4 pt)
Explain the meaning of the figure and be included in the caption
Indicate the source of the figure and be presented above the figure
Explain symbols and be placed within the figure
A concise and descriptive phrase that describes the figure.
An explanation of all units of measurement, abbreviations, or symbols that are not included in the legend.
An explanations of error bars
An explanation of probability if statistically significant values are marked in the figure
The source of the figure (i.e., where the figure was first published)
If the figure was previously published, a phrase to indicate that the figure is being re-used with permission from the copyright holder e.g., Reprinted with permission.
Isn't necessary. Authors should present the photograph exactly as it was taken to preserve the integrity of the image.
Helps to focus attention on the key elements
Protects the anonymity of photographed subjects
Distracts the reader because important context is eliminated
No sourcing information is required in the caption because the photograph is part of the author's primary research.
If the author previously published the photograph elsewhere, the author should check if s/he needs to obtain copyright permission from the publisher to re-use the image.
The figure caption should provide the date and time when the photograph was taken.
All photographs in figures must be taken by the author of the text.
Take a photograph of the original image and use your photograph. In the figure caption, acknowledge the original source of the photograph and that you've used a photograph of the image.
Obtain written permission to use the image and acknowledge both the original author and that permission has been granted in the figure caption.
If the image was taken by a professional photographer, you may need to obtain permission to use it from both the copyright holder and the photographer because professional photographs often remain the property of the photographer.
Try to acquire the original photograph from the copyright holder or photographer so that you have a high-quality image in your text.