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Dataplot: Plot Annotation
Commands for Annotating Plot
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Dataplot provides the commands
TITLE,
LABEL,
LEGEND, and
TEXT
for annotating plots.
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The TTITLE command is used to place a title on plot and the LABEL command is used to specify X and Y axis labels. For example,
X1LABEL LEAD Y1LABEL POTASSIUM PLOT POT VS LEAD
Title and Axes Labels Apply to All Subsequent Plots
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The title and axes labels are applied to all subsequent plots.
They are not placed on a currently existing plot (as is done
by some software packages). In Dataplot, the TITLE and LABEL
commands set internal switches. When a plot is generated, it
uses the current settings of these switches. This means that
the specified titles and axis labels persist beyond the next
plot. To specify different titles and axis labels, simply
enter the commands with the new text. To turn off the title
or an axis label, enter the command with no argument (i.e.,
TITLE, X1LABEL, Y1LABEL).
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Setting the Attributes of the Title
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The title allows a single line to be specified. You can set
the case (lower, upper,
or as entered), color,
displacement (the
distance from the upper frame line to the title),
font,
size, and
line width (only applies
if the title is drawn with a software font). If you want a
multiline title, you need to use the LEGEND command.
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LABEL Command
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The LABEL command can be used to put an axis label on the left
Y axis, on the right Y axis, and up to 3 lines on the lower
X axis. You cannot specify an axis label for the upper X axis
label. The LABEL command uses a prefix to identify the desire
axis label. Y1LABEL refers to the left Y axis, Y2LABEL applies
to the right Y axis, YLABEL refers to both the left and right
Y axes, X1LABEL refers to the first line of the lower X axis,
X2LABEL to the second line, X3LABEL to the third line, XLABEL
to all 3 lines, and LABEL to all 5 axes labels.
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Setting the Attributes of Labels
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Similar to the title, you can set the
case (lower, upper, or
as entered), color,
displacement (the
distance from the frame line to the label),
fill (used to specify
that certain special characters such as circles or squares are
solid filled), font,
size, and
line width (only applies
if the title is drawn with a software font).
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LEGEND Command
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The TITLE and LABEL command place text at specific locations
on the plot. It is often necessary to place text at an
arbitrary position on the plot. Both the LEGEND and TEXT
commands allow you to do this. The distinction is that
LEGEND places the specified text on all subsequent plots
(until it is changed or turned off) while the TEXT command
is used to place the specified text immediately. Text drawn
with the TEXT command does not persist to subsequent plots.
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Positioning Legends
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Up to 100 legends can be specified on a plot. The
positions of the
legends are specified in 0 to 100 units in both the horizontal
and vertical directions. That is, the lower left corner of
the output page is (0,0) and the upper right corner is
(100,100). For reference, the default position of the lower
left of the plot frame is (15,20) and the default position of
the upper right of the plot frame is (85,90).
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Setting the Legend Attributes
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You can set the angle
(only applies if the legend is drawn with a software font),
case (lower, upper, or
as entered), color,
direction (horizontal
or vertical), fill
(used to specify that certain special characters such as
circles or squares are solid filled),
font,
justificiation (both
horizontal and vertical justification can be specified),
height and width,
size, and
line width (only applies
if the title is drawn with a software font).
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TEXT Command
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The TEXT command draws the specified text at the current
position. This is typically set with a
MOVE or
MOVEDATA command. The
distinction is that MOVE specifies the position in terms of the
0 to 100 units while MOVEDATA specifies the position in units
of the most recent plot. When multiple lines of text are being
drawn, the commands CR,
CRLF,
LF,
MARGIN, and
VERTICAL SPACING
can be used to specify certain types of automatic spacing.
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Setting the Attributes of the TEXT Command
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You can set the angle,
case (upper, lower, or as
entered), color,
fill (used to specify that
certain special characters such as circles or squares are solid
filled), font,
character height,
horizontal spacing,
character height and width,
fixed or proportional
spacing, line width
(only applies if a software font is used), or
character width.
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Example Demonstrating Title, Axes Labels, and Legends on a Plot
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The following Dataplot program demonstrates the placing of
titles, axes labels, and legends on a plot.
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SERIAL READ LEAD
164 426 59 98 312 263 607 497 213 54 160 262 547 325 419 94 70
END OF DATA
SERIAL READ POT
106 175 61 79 94 121 424 328 107 218 140 179 246 231 245 339 99
END OF DATA
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CHARACTER CIRCLE
CHARACTER FILL ON
LINE BLANK ALL
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TITLE POLLUTION SOURCE ANALYSIS
X1LABEL LEAD
Y1LABEL POTASSIUM
LEGEND SIZE 1.5
LEGEND CASE ASIS
LEGEND 1 COORDINATES 5 8
LEGEND 1 Source: Lloyd Currie
LEGEND 2 COORDINATES 5 5
LEGEND 2 Date: 1990
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PLOT POT VS LEAD
Dataplot Graph
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The above Dataplot program generated the following graph.
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Example Demonstrating the Use of the TEXT Command to Generate
a Word Chart
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The following Dataplot program demonstrates the use of the
TEXT command to generate a word chart.
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VERTICAL SPACING 6
CRLF ON
MARGIN 10
FONT DUPLEX
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HW 4 2
MOVE 5 95
TEXT JAPAN's 6-POINT PROGRAM FOR
MOVE 5 89
TEXT QUALITY MANUFACTURING
MOVE 10 80
HW 2.4 1.2
TEXT CIRC() QUALITY AUDITS
TEXT CIRC() COMPANY-WIDE QUALITY CONTROL (CWQC)
TEXT CIRC() QUALITY TRAINING AND EDUCATION
TEXT CIRC() APPLICATION OF STATISTICAL METHODS
TEXT CIRC() QUALITY CIRCLE ACTIVITIES
TEXT CIRC() NATION-WIDE QUALITY CONTROL PROMOTIONAL ACTIVITIES
HW 2 1
MOVE 5 10
TEXT SOURCE: Q.C. TRENDS WINTER 1985, PAGES 22-23.
Dataplot Graph
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The above Dataplot program generated the following graph.
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