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Up: 12.2 Graph Editor
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The Edit menu of the Graph Edit window consists of the
following options:
The Data Set Options dialog box allows you to specify
what ranges contain the data used in the graph and how
you wish that data to be displayed. The Data Set Options
dialog box includes the following sections:
- Data Set Selection
- Data Ranges
- Segment Type
- Line Type
- Marker type
- Fill Definition
- Shading
- Histogram
- Legends
To modify the Data Set Options for a graph:
- Select Data Sets... from the graph window Edit menu.
NExS displays the Data Set Options dialog box as
shown in Figure 12.4.
- The Data Set slider bar is used to specify which set
of data on the graph you wish to modify. For
example, each line on a line graph is a separate set
of data.
- The Data Ranges section contains nine entry boxes that
allow you to specify the range of cells that contain
the data to be plotted. If you create a graph from a
selected block of cells, NExS automatically fills
these entry boxes with the appropriate data ranges.
- In the X Data entry box, enter the range of cells,
either a single column or a single row, containing
the X coordinate of data points. For histograms
this field is ignored.
- In the Y Data entry box, enter the range of cells,
either a single column or a single row, containing
the Y coordinate of data points.
For line or bar graphs, the number of Y data
elements must match the number specified for the X
Range.
- In the Z Range entry box (which is used for a
surface and contour plots) enter the range of
cells, containing the Z coordinate of data points.
This range must be a block whose dimensions must
agree with the X and Y ranges in the following
manner: the Z range should have the same number of
columns as the X range and the same number of rows
as the the Y range. The Z Range entry box is
ignored for two-dimensional graphs.
- The Lo Data and Hi Data entries specify the low and
high Y values for graphs of financial trading data
and the low and high extent for error bars.
- The Lo Var and Hi Var entries specify the low and
high Y values for the bottoms and tops of boxes which are
printed around each data point in a Box graph.
The Lo Var entry is also used to specify the Y values for
the variance plot in a Westinghouse graph.
- The Median entry specifies the Y values for the median
values which are marked in Box graphs.
- The Annotation Data entry box is used to specify
annotations. Annotations are text that is
dynamically displayed in the graph when the graph
is drawn. To use them, you specify the coordinate
in the graph where the text will be displayed. You
can also indicate where the bounding box of the
text will appear in
relation to this coordinate. For example you could
enter the following in cell B25:
(4,66,0.5,0.0)peak support time
.
NExS displays the text ``peak support time'' at
position X=4 and Y=66 of the graph. This text is
horizontally centered (0.5) and vertically above
(1.0) position 4,66. Justification of text in
relation to the X,Y coordinate is specified in the
following manner:
- Horizontal Justification
-
0 - default position.
Positive values - left adjusted.
Negative values - right adjusted.
0.5 - centered.
- Vertical Justification
-
0 - default position.
Positive values - below point.
Negative values - above point.
The easiest way to enter annotations is with the @ANNOTATE
function, described in Appendix A.
- In the Segment Type entry, select whether points in
this data set are connected by Lines, Splines, or
Bars. Line segments connect the data points with
straight lines; splines with smooth line segments
(cubic splines); bars, with traditional bar charts.
- In the Line Style option, select the type of line to
be used with this data set. Use No Line to produce
X-Y or scatter plots of the data. The line types
include solid ones and various combinations of dots
and dashes.
The Line Width option determines the thickness of the
line used for this set of data. The Line Color
option lets you select the color to be used when
drawing the line and markers for this data.
- In the Marker area, select the style of marker use to
denote the data points. This option applies to Line,
Scatter, Hi Lo, and Polar graphs. NExS ignores this
setting when creating other types of graphs. Select
None to suppress displaying the actual data points.
This produces a plot with just the line.
- The Fill Style and Fill Color options determine the
type of shading, if any, that is drawn between the
line and the X axis. Fill Color is also used to
determine the color of the bars in a bar chart.
- The Shading option determines the representation of
surface plots, contour plots, and bar charts.
None applies no shading to the Graph. Directed Light
applies shading that gives the appearance that the
surface is lit from a single light source.
Z Height shades the surface based on the values of the
Z data, where minimum values are purple and maximum
values are red. The height of each surface section
is defined as the average of the Z values of its
vertices.
- The Histogram indicator determines whether the actual
data points are plotted directly or whether a plot is
made of the frequency distribution of the data.
- In the Legend Text entry box type in a label for the
data plotted with the line. If Legends is selected
in the Graph Options dialog, then the Legend Text
will appear to the right of the graph legend for
this data set.
Options are provided for setting the font, size,
style and color of the legend text. In addition, the
legend can be forced to multiple lines by embedding
the new line indicator (\n
) wherever you want to
breakup the line.
- Click OK to confirm your choices, dismiss the dialog
box, and redraw the graph. Click Apply to confirm
your choices, keep the dialog box open, and redraw
the graph. Click Cancel to dismiss the dialog box.
Figure 12.4: Data Set Options Dialog Box
Next: 12.2.10 Rotate...
Up: 12.2 Graph Editor
Previous: 12.2.8 Cancel
NExS User's Guide, Version 1.4.5
Grey Trout Software
11 April 1999