Last modified September 19, 2024. Please check our site for the most recent document.
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Naming and journal style conventions
• Number each figure with Arabic numerals (1, 2, 3, etc.) in order of their citation in text.
• Label multipart figures with consecutive letters of the alphabet, using a lowercase letter within
parentheses, e.g., (a), (b), (c), etc.
• Whenever possible, all parts of a multi-part figure should fit on a single page.
• Define abbreviations in the figure legend, not on the figure itself.
• Symbol keys and scale bars should appear on the figure image, not in the figure caption.
• Label all figure axes and include units. Units should conform to the International System of
Units (SI) per journal style. If measurements were made in other units, include SI equivalents.
General Appearance
• Please use a colorblind-friendly palette.
• Grayscale patterns do not reproduce as well as solid colors or lines. Avoid small, dotted lines,
thin lines, multiple levels of gray shading, and stippling. For bar graphs, use black, white, striped,
hatched, or colored designs, but only if they are sufficiently widely spaced to appear distinct
from one another.
• For symbols and lines, avoid very small sizes or line thicknesses (a 1-point width stroke or
greater is preferable). All elements of a figure should appear with the same degree of intensity.
If different degrees of intensity need to be conveyed, lines should differ by 1-point width for
clarity.
• If no important information will be lost, consider placing fewer numbers on the axes to achieve
an uncluttered look.
• Make figures as clean and uncluttered as possible; avoid extra gridlines and section boxes.
• Maps should include longitude and latitude, an indication of compass direction, a distance scale,
and a thin outer line as a border. Make lines on maps bold and distinct while eliminating
information not pertinent to the subject.
• Use black type rather than gray for lettering and scale numbers for readability.
Size and Proportion
• Images should be of adequate resolution (300-600 dpi).
• When possible, submit figures in the size intended for publication in the typeset PDF of your
manuscript, using single-column width sizing of 8.5 cm for figures when possible. The maximum
allowable size is 18 cm wide by 24 cm tall (to accommodate a caption underneath).
• All text must be sized between 6 and 10 points when the image is sized for publication.