- Homework #8 due Thursday
- Done with all chapters
- Final Exam: Friday December 14, 8 AM - 10 AM
- Last Name A-L: Wellman 6
- Last Name M-Z: Wellman 216

- Auxiliary View Example
- Figures and Charts

Graphic visual representations of information, data or knowledge intended to present complex information quickly and clearly

- Time-series
- Statistical
- Maps
- Hierarchies
- Networks

Graphical representation of data in which the data is represented by symbols, such as bars in a bar chart, lines in a line chart, or slices in a pie chart.

Histogram |
Bar Chart |

Pie Chart |
Line Chart |

A plot is a graphical technique for representing a data set, usually as a graph showing the relationship between two or more variables.

A raster, or bitmap, graphic is a dot matrix data structure representing a generally rectangular grid of pixels, or points of color, viewable via a monitor, paper, or other display medium.

Filetypes: .gif, .png, .jpg, .bmp

is the use of geometrical primitives such as points, lines, curves, and shapes or polygon(s), which are all based on mathematical expressions, to represent images in computer graphics.

Filetypes: .svg, .ps, .eps, .pdf, (.doc, .odt)

Units are pretty straightforward except for the notation of a pixel. Most units are physical distances in our reality, but a pixel isn't. It can change from display to display. There are some compatibility issues that you should be aware of between printed media and video images for that reason.

- Standard units
- m+m, cm, inch, etc. These are straight forward and are used in many computer aided drafting/design programs.

- Points
- Traditionally used to measure fonts on printed pages and typography. Nowadays 72 points equals 1 inch (1 pt = 0.0139 in = 0.3528 mm).
- EM
- A relative measurement with respect to the point size of the type face. Used in typography and in html/css.

The smallest single element of a digital image. The word resolution is
often used for the amount of pixels in an image. The higher the resolution
the better the ability to reproduce the actual image digitally. **A
pixel does not equal a standard physical dimension, it depends on the
screen the image is being displayed on.**

A measure of spatial printing or video dot density, the number of individual dots that can be placed in a line within the span of 1 inch (2.54 cm). Correlates with image resolution, but is related only indirectly (from Wikipedia).

Can describe the resolution, in pixels, of an image to be printed within a specified space. For instance, a 100 x 100 pixel image that is printed in a 1-inch square could be said to have 100 dots per inch (DPI). Good quality photographs usually require 300 dpi. (from Wikipedia)

Modern computer-monitors typically display about 72 to 130 pixels per inch (PPI some modern consumer printers can resolve 2400 dots per inch (DPI) or more

The DPI measurement of a printer often needs to be considerably higher than the pixels per inch (PPI) measurement of a video display in order to produce similar-quality output**\(\TeX\)**:
Donald Knuth's computer based typesetting system released in 1978

**\(\LaTeX\)**:
Leslie Lamport's document markup language and document preparation based on
\(\TeX\)

TeX input: `$-b \pm \sqrt{b^2 - 4ac} \over 2a$`

Tex output: $$-b \pm \sqrt{b^2 - 4ac} \over 2a$$

$$\frac{a + b}{a} = \frac{a}{b} = \varphi$$

$$\varphi=\frac{1+\sqrt{5}}{2}=1.618\ldots$$

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