Bar-Line Chart Task

About the Bar-Line Chart Task

The Bar-Line Chart task creates a vertical bar chart with a line chart overlay.
You can use this task to perform the following tasks:
  • display and compare exact and relative magnitudes
  • examine the contribution of each part to the whole
  • determine trends and patterns in the data

Example: City and Highway Mileage by Origin

For example, you can create a bar-line chart that compares the number of miles per gallon (in the city and on the highway) that cars use depending on their country of origin. The task calculates the mean of the number of miles per gallon in the city and in the highway for each country. This bar-line chart shows that cars from Asia tend to get the highest number of miles per gallon in city and highway driving.
To create this example:
  1. In the Tasks section, expand the Graph folder and double-click Bar-Line Chart. The user interface for the Bar-LineChart task opens.
  2. On the Data tab, select the SASHELP.CARS data set.
  3. Assign columns to these roles:
    Role
    Column Name
    Category variable
    Origin
    Bar response variable
    MPG_City
    Line response variable
    MPG_Highway
  4. To run the task, click Submit SAS code.
Bar-Line Chart of City and Highway Mileage by Origin

Assigning Data to Roles

To run the Bar-Line Chart task, you must assign a column to the Category variable, Bar response variable, and Line response variable roles.
Option Name
Description
Roles
Category variable
specifies the variable that classifies the observations into distinct subsets.
Bar response variable
specifies a numeric response variable for the bar chart.
Line response variable
specifies a numeric response variable for the line plot.
Group variable
specifies a variable that is used to group the data.
URL variable
specifies a character variable that contains URLs for web pages to be displayed when parts of the plot are selected within an HTML page.
Statistics
Mean
calculates the mean of the response variables.
Sum
calculates the sum of the response variables.

Setting Options

Option Name
Description
Title and Footnote
You can specify a custom title and footnote for the output. You can also specify the font size for this text.
Bar Details
Apply bar color
specifies the color for the bars.
Transparency
specifies the degree of transparency for the plot. The range is 0 (completely opaque) to 1 (completely transparent).
Apply bar gradient
applies a gradient to each bar.
Note: This option is available only if you are running the second maintenance release for SAS 9.4 or later.
Data skin
specifies a special effect to be used on all filled bars.
Line Details
Apply line color
specifies the color for the line.
Line thickness
specifies the thickness (in pixels) of the line.
Transparency
specifies the degree of transparency for the plot. The range is 0 (completely opaque) to 1 (completely transparent).
Use solid line pattern
specifies a solid pattern for the line.
Category Axis
Reverse
specifies that the values of the tick marks are displayed in reverse (descending) order.
Show values in data order
places the discrete values for the tick marks in the order in which they appear in the data.
Show label
enables you to display a label for the axis. Enter this label in the Custom label box.
Response Axes
Use zero baseline
specifies whether to offset all lines from the discrete category values and all bars from category midpoints. By default, there is no offset.
Use uniform scale
uses the same scale for both response axes.
Show grid on left (bar) axis
creates grid lines at each tick on the axis for the bar chart.
Drop statistics suffix
removes the name of the calculated statistic in the axis label. For example, if you are calculating the mean, the axis label could be Weight (Mean).
Add plot prefix to axis labels
adds (Bar) and (Line) to the labels for the response axes.
Custom label for left (bar) axis
enables you to specify a custom label for the response axis in the bar chart. The default label is the name of the bar response variable.
Custom label for right (line) axis
enables you to specify a custom label for the response axis in the line chart. The default label is the name of the line response variable.
Legend Details
Show legend
specifies whether to display a legend in the output.
Legend location
specifies whether the legend is placed outside or inside of the axis area.
Graph Size
You can specify the width and height of the graph in inches, centimeters, or pixels.