5. Adding numbers, score lines and bar lines (continued)

Work in the lines and numbers layer, on top of all the other layers [A].

c. Bar Lines

Use Line Tool for the bar lines. [N on the keyboard in Adobe Photoshop 3.0; in Adobe Photoshop 5.0, Line Tool is the alternative selection under the Pencil Tool (N)]. Double click on the Tool to get Line Tool options.

• For black lines make black the foreground color (using the Foreground/Background color feature under the Toolbar) [B].
• Use 9 pixel line for bar lines [C].
• Turn off anti-alias function- this gives crisp edge lines [D].
• Draw lines, holding down shift key to constrain lines to horizontal [E].

Lines are drawn in pixels on the screen. To change units to pixels, under File Menu, choose Preferences: Units (or Units and Rulers in Photoshop 5.0): under Units: choose Pixels. To see the length of the line being drawn on the screen, under Window Menu: select Palettes: Show Info (in Photoshop 5.0, select Show Info ). When you begin to draw the line on the screen, the symbols delta X and delta Y appear below the regular Info Palette [F] (in Photoshop 5.0, they appear in the upper right quadrant of the Info Palette). Delta X will give you the length of the horizontal line being drawn. (Watch delta X numbers carefully, when you finish drawing the line the symbol and length disappears!)

For the folks in our lab, the length for the bar lines for the different microscopes is given in the text-only version located in this web site.

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