To imitate the standards for
SAS IT Resource Management needle plots, implement the following specifications:
-
Use needle plots when you want
to plot two or three statistics of a single metric.
-
Do not use needle plots if you
expect a small number of points, such as in a current week report
that can have as few as one point on the first day of the week.
Needle plots are used
in the following two formats: One that shows two statistics and one
that shows three:
-
needle plots that show two statistics.
For the reports that
show two statistics, use the following guidelines:
-
Both statistics should be needle
lines with a size of
12
to
16
.
-
The size should be as large as
possible without bleeding onto the axis line.
-
The variable with the larger number
should always be first. The variable with the smaller number should
be second. For example,
Maximum
is
always larger than or equal to
Mean
,
which is equal to or larger than
Minimum
.
-
needle plots that show three statistics.
For reports that show
three statistics, use the following guidelines:
-
The two most important statistics
should be needle lines with a size of
12
to
16
.
-
The size should be as large as
possible without bleeding onto the axis line.
-
The statistic with the larger number
should be first. The smaller statistics should be second. The third
statistic, such as the standard deviation, should have an interpolation
of scatter. For example,
Maximum
is
always larger than or equal to
Mean
,
which is equal to or larger than
Minimum
.
-
Use the dot symbol when plotting
a standard deviation. The dot should be black and size
9
to
12
.
The dot symbol should be narrower than the needle width.