Histogram Sparklines
                                        Histograms are used to represent the frequency distribution of a data set.
A histogram sparkline has the following elements:
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Bin: The data container which contains data of the specified range of values.
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Bar: The paint block. The bar height is determined by the following expression if the PaintLabel option is selected : cellRowHeight - labelFontSize - 6px, otherwise, it is determined by: cellRowHeight - 6px.
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Edge: Border of the bar.
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If the font size is more than the expression, then the largest integer less than or equal to the expression is taken as the font size.
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If the height of the cell is less than the cell row height, the font size is 12px.
 
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Data Label: The data range displayed in the sparkline. The data label font size is determined by the expression: Math.floor(cellRowHeight/3).
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If the font size is more than the expression, then the largest integer less than or equal to the expression is taken as the font size.
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If the height of the cell is less than the cell row height, the font size is 12px.
 
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To create histogram sparklines in the workbook:
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Click Insert from the menu.
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Click Sparkline and select the histogram sparkline under Bar Sparkline from the list.
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In the Create Sparklines dialog box:
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Select a range of cells in the same row or the same column.
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Select the cell where the sparkline will appear.
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Click OK.
 
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The sparkline is displayed in the cell. You can now customize the sparkline by clicking Design from the menu and selecting Settings.
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Set the parameters as described below and click OK.
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Copy and paste the cell as needed to finalize your histogram sparklines.
 
| Histogram sparkline parameter | Description | 
|---|---|
| DataRange | Range or calculation array, such as "A1:C6" or "{1,2,2,3,3}". If a cell value isn't a valid number, it will be ignored. | 
| Continuous | 
                                                         (Optional) If this option is selected, the histogram is continuous; otherwise the histogram is discrete. 
  | 
                                                
| PaintLabel | 
                                                         (Optional) Boolean that represents whether to show the data label.  | 
                                                
| Scale | Number that represents the data binning width when histogram is continuous (value > 0). | 
| BarWidth | Number that represents the percent of bar width according to the average bar width (value > 0 and value <= 1). | 
| BarColor | String that represents the bar color. | 
| EdgeColor | 
                                                         String that represents the color of bar edge.  | 
                                                
| LabelFontStyle | String that represents the data label font style. It supports custom font style, font weight, font family, font size. | 
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                                                         The histogram sparkline formula has the following syntax: =HISTOGRAMSPARKLINE(dataRange,continuous?,paintLabel?,scale?,barWidth?,barColor?,labelFontStyle?,labelColor,edgeColor?)  | 
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