deadprogram · January 16, 2011 19:39
diff --git a/gistfile1.txt b/gistfile1.txt
 Color

 "The fundamental uses of color in information design (are): to label, to measure, to represent or imitate reality, to enliven or decorate." Dr. Tufte provides a few specific guidelines on the use of color:
 "Color spots against a light gray or muted field highlight and italicize data." "Note the effectiveness and elegance of small spots of intense, saturated color for carrying information."
 "use colors found in nature, especially those on the lighter side."
 "For encoding information,... more than 20 or 30 colors frequently produce not diminishing but negative returns."
 "The primary colors (yellow, red, blue) and black provides maximum differentiation (no four colors differ more)."
 In color maps, use a single hue, Don't use up the entire color spectrum, or even all of a hue's levels. Particularly avoid Roy G. Biv (red, orange, yellow, green, blue, indigo, violet), the color spectrum of the rainbow. It's good physics, but poor human factors. Like all multi-hue color maps, the non-equidistant hue changes are perceived as especially important contours, which they usually are not. Furthermore, the lighter middle parts of the spectrum are often perceived as the higher values. Finally, one needs to constantly remind oneself which color means high vs. low values. Using a single hue with variations in intensity allows instant interpretation, multiple color maps without ambiguity, and leaves graphical space for layering and separation.
 Tufte turns to the Swiss cartographer, Eduard Imhof for additional insight:
 "Pure, bright or very strong colors have loud, unbearable effects when they stand unrelieved over large areas adjacent to each other, but extraordinary effects can be achieved when they are used sparingly on or between dull background tones."
 "The placing of light, bright colors mixed with white next to each other usually produces unpleasant results, especially if the colors are used for large areas."
 "Large area background or base-colors should do their work most quietly, allowing the smaller, bright areas to stand out most vividly, if the former are muted, grayish or neutral."
 "If a picture is composed of two or more large, enclosed areas in different colors, then the picture falls apart. Unity will be maintained, however, if the colors of one area are repeatedly intermingled in the other...."
 "Color itself is subtle and exacting. And, furthermore, the process of translating perceived color marks on paper into quantitative data residing in the viewer's mind is beset by uncertainties and complexities. These translations are nonlinear (thus gamma curves), often noisy and idiosyncratic, with plenty of differences in perception found among viewers (including several percent who are color-deficient)."
	Color

	"The fundamental uses of color in information design (are): to label, to measure, to represent or imitate reality, to enliven or decorate." Dr. Tufte provides a few specific guidelines on the use of color:
	"Color spots against a light gray or muted field highlight and italicize data." "Note the effectiveness and elegance of small spots of intense, saturated color for carrying information."
	"use colors found in nature, especially those on the lighter side."
	"For encoding information,... more than 20 or 30 colors frequently produce not diminishing but negative returns."
	"The primary colors (yellow, red, blue) and black provides maximum differentiation (no four colors differ more)."
	In color maps, use a single hue, Don't use up the entire color spectrum, or even all of a hue's levels. Particularly avoid Roy G. Biv (red, orange, yellow, green, blue, indigo, violet), the color spectrum of the rainbow. It's good physics, but poor human factors. Like all multi-hue color maps, the non-equidistant hue changes are perceived as especially important contours, which they usually are not. Furthermore, the lighter middle parts of the spectrum are often perceived as the higher values. Finally, one needs to constantly remind oneself which color means high vs. low values. Using a single hue with variations in intensity allows instant interpretation, multiple color maps without ambiguity, and leaves graphical space for layering and separation.
	Tufte turns to the Swiss cartographer, Eduard Imhof for additional insight:
	"Pure, bright or very strong colors have loud, unbearable effects when they stand unrelieved over large areas adjacent to each other, but extraordinary effects can be achieved when they are used sparingly on or between dull background tones."
	"The placing of light, bright colors mixed with white next to each other usually produces unpleasant results, especially if the colors are used for large areas."
	"Large area background or base-colors should do their work most quietly, allowing the smaller, bright areas to stand out most vividly, if the former are muted, grayish or neutral."
	"If a picture is composed of two or more large, enclosed areas in different colors, then the picture falls apart. Unity will be maintained, however, if the colors of one area are repeatedly intermingled in the other...."
	"Color itself is subtle and exacting. And, furthermore, the process of translating perceived color marks on paper into quantitative data residing in the viewer's mind is beset by uncertainties and complexities. These translations are nonlinear (thus gamma curves), often noisy and idiosyncratic, with plenty of differences in perception found among viewers (including several percent who are color-deficient)."