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Mathematica > Visualization and Graphics > Charting and Information Visualization > Chart Labeling, Legending & Annotation >
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LabelingFunction

LabelingFunction
is an option for charting functions which specifies a function to apply to determine labeling of chart elements.
  • LabelingFunction->f specifies that each chart element should have a label given by f[value, index, labs], where value is the data value associated with the element, index is its position in the nested list of datasets, and labs is the list of relevant labels specified by ChartLabels.
  • A setting of Automatic is effectively equivalent to Placed[#, {Tooltip, StatusArea}]&, and displays the data value for each data element in a tooltip and in the status area.
  • If the labeling function f returns a labeling expression expr not of the form Placed[...], the labeling expression is taken to be Placed[f[...], Automatic].
  • Labels in a particular chart can be specified by ChartLabels, LabelingFunction or explicit Labeled wrappers. All labels specified in all ways will be used in any given chart.
EXAMPLESCLOSE ALL
Basic Examples   (4)
Use automatic labeling by values through Tooltip and StatusArea:
Do no labeling:
Use a Panel around the values and place them above the bars:
Place row, column, and value labels in a Tooltip:
Use automatic labeling by values through Tooltip and StatusArea:
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Click for copyable input
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Do no labeling:
In[1]:=
Click for copyable input
Out[1]=
 
Use a Panel around the values and place them above the bars:
In[1]:=
Click for copyable input
Out[1]=
 
Place row, column, and value labels in a Tooltip:
In[1]:=
Click for copyable input
Out[1]=
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