O

observation

a row in a SAS data set. An observation is a collection of data values associated with a single entity, such as a customer or state. Each observation contains one data value for each variable. See also variable.

offset

(1) in a legend, the distance between the edge of the legend or the edge of the legend frame and the axis frame or the border surrounding the graphics output area. (2) on an axis, the distance from the origin to either the first major tick mark or the midpoint of the first bar, or the distance from the last major tickmark or the midpoint of the last bar to the end of the axis.

origin

(1) in a three-dimensional coordinate system, the point at which the X, Y, and Z axes intersect, defined by the coordinates (0,0,0). In a two-dimensional coordinate system, the point at which the X and Y axes intersect, defined by the coordinates (0,0). (2) in the AXIS statement, the origin is the point at which the axis line begins (the left end of the horizontal axis or the bottom of the vertical axis). In the LEGEND statement, the origin is the location of the lower-left corner of the legend. (3) in the graphics output area, the lower-left corner.