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Typical requirements from academic journals

Producing Journal Quality Images Using SAS/Graph Martha Cox Cancer Outcomes Research Program CDHA / Dalhousie. Typical requirements from academic journals. Image resolution: 300 dpi Printed images usually 6½” wide. What is “dpi?”. DPI is calculated from 2 properties:

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Typical requirements from academic journals

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  1. Producing Journal Quality Images Using SAS/GraphMartha CoxCancer Outcomes Research ProgramCDHA / Dalhousie

  2. Typical requirements from academic journals • Image resolution: 300 dpi • Printed images usually 6½” wide

  3. What is “dpi?” DPI is calculated from 2 properties: pixels: exact number of dots used horizontally and vertically to create the image inches: actual size of the printed image dpi = pixels / inches

  4. Calculate how to get 300 dpifor the X axis at 6½” wide: dpi = pixels / inches 300 = pixels / 6.5 pixels = 1950

  5. Determine the desired height of the graph Get the aspect ratio of your figure. My graph: (x:y) = 7”:5¼” So, 7:5.25 as 6.5:y 7y = 34.125 y = 4.875

  6. Calculate how to get 300 dpifor the Y axis: dpi = pixels / inches 300 = pixels / 4.875 pixels = 1462.5

  7. SAS/Graph options xpixels & ypixels: exact number of dots used horizontally and vertically xmax & ymax: actual size of the printed image

  8. SAS/Graph options x-resolution = xpixels / xmax y-resolution = ypixels / ymax

  9. SAS/Graph optionsfor this example goptions xpixels = 1950 xmax = 6.5 ypixels = 1462.5 ymax = 4.875 ; Produces 300 dpi at 6 ½ “ w x 4⅞” h.

  10. SAS/Graph optionsfor this example goptions xpixels = 2100 xmax = 7 ypixels = 1574 ymax = 5.25 ; Produces 300 dpi at 7” w x 5¼” h.

  11. Questions?

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