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Pattern Perception and Map Design
The document discusses principles of pattern perception and map design. It covers Gestalt's laws of proximity, similarity, connectedness, continuity, symmetry, closure, and relative size. It then discusses representing vector fields through showing direction, magnitude, and orientation. It also discusses the perceptual syntax of diagrams through creating nodes and relationships. Finally, it discusses the visual grammar of maps through using contours, textures, colors, and lines to represent geographic regions, paths, and point entities.
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Pattern Perception and Map Design
- 1. digital-media@rgu Pattern perception andmap design
- 2. what are we lookingat? Gestalts Laws Representing vector fields perceptual syntax of diagrams visual grammar of maps
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- 10. Place symbols andglyphs representing related information close together
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- 13. When designing agrid layout of a data set, consider coding rows and/or columns using low-level visual channel properties, such as colour and texture.
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- 15. To show relationshipsbetween entities, consider linking graphical representations of data objects using lines or ribbons of color.
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- 21. Consider using symmetryto make pattern comparisons easier
- 22. closure and commonregion
- 23. closure and commonregion
- 24. closure and commonregion
- 25. Consider putting relatedinformation inside a closed contour. A line is adequate for regions having a simple shape. Colour or texture can be used to define regions that have more complex shapes.
- 26. closure and commonregion
- 27. To define multipleoverlapping regions, consider using a combination of line contour, colour, texture, and Cornsweet contours.
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- 29. Use a combinationof closure, common region, and layout to ensure that data entities are represented by graphical patterns that will be perceived as figures, not ground.
- 31. Representing Vector Fields: PerceivingOrientation and Direction
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- 36. Showing direction withbrush strokes
- 38. To represent flowdirection in a vector field visualization, use streamlets with heads that are more distinct than tails, based on luminance contrast. A streamlet is a glyph that is elongated along a streamline and which induces a strong response in neurons sensitive to orientations tangential to the flow.
- 40. For vector fieldvisualizations, use more distinct graphical elements to show greater field strength or speed. They can be wider, longer, more contrasting, or faster moving.
- 41. Perceptual syntax ofdiagrams
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- 45. When developing glyphs,use small, closed shapes to represent data entities, and use the color, shape, and size of those shapes to represent attributes of those entities.
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- 49. Use connecting lines,enclosure, grouping, and attachment to represent relationships between entities. The shape, color, and thickness of lines and enclosures can represent the types of relationships.
- 51. As an alternativeto arrows to represent directed relationships in diagrams, consider using tapered lines with the broadest end at the source node.
- 52. the visual grammarof maps
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- 60. Use closed contours,areas of texture, or areas of color to denote geographic regions. Use color, texture, or boundary style to denote the type of region.
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- 64. Use lines torepresent paths and linear geographic features. Use line color and style to represent the type of linear feature.
- 68. Use small, closedshapes to represent point entities, such as cities, that appear small on a map. Use color, shape, and size to represent attributes of these entities.
- 69. what did we lookat? Gestalts Laws Representing vector fields perceptual syntax of diagrams visual grammar of maps