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A cascade sparkline is generally used to analyze a value over time and shows the progressive changes between two values like yearly sales, total profit, net tax etc. It is used widely in finance, sales, legal and construction sectors, to name a few.

The cascade sparkline formula is used with following parameters:

`=CASCADESPARKLINE(pointsRange, [pointIndex, labelsRange, minimum, maximum, colorPositive, colorNegative, vertical, itemTypeRange, colorTotal, colorTransition])`

The formula options are described below:

 Option Description pointsRange A reference that represents the range of cells that contains values, such as "B2:B8". pointIndex Optional A number or reference that represents the points index. The pointIndex is >= 1 such as 1 or "D2". labelsRange Optional A reference that represents the range of cells that contains the labels, such as "A2:A8".  The default value is no label. minimum Optional A number or reference that represents the minimum values of the display area. The default value is the minimum of the sum (the sum of the points' value), such as -2000. The minimum set must be less than the default minimum; otherwise, the default minimum is used. maximum Optional A number or reference that represents the maximum values of the display area. The default value is the maximum of the sum (the sum of the points' value), such as 6000. The maximum set must be greater than the default maximum; otherwise, the default maximum is used. colorPositive Optional A string that represents the color of the first or last positive sparkline's box (this point's value is positive). The default value is "#8CBF64". If the first or last box represents a positive value, the box's color is set to colorPositive. The middle positive box is set to a lighter color than colorPositive. colorNegative Optional A string that represents the color of the first or last negative sparkline's box (this point's value is negative). The default value is "#D6604D". If the first or last box represents the negative value, the box's color is set to colorNegative. The middle negative box is set to a lighter color than colorNegative. vertical Optional A boolean that represents whether the box's direction is vertical or horizontal.  The default value is FALSE. You must set vertical to true or false for a group of formulas, because all the formulas represent the entire sparkline. itemTypeRange Optional An array or reference that represents all the item types of the data range. The values should be {"-", "+", "="} or "A1:A7" that reference the value of {"+", "-", "="}, where "+" indicates positive change, "-" indicates negative change and "=" indicates total columns. colorTotal Optional A string that either represents the color of the last sparkline's box when itemTypeRange does not exist or represents the color of the resulting sparkline's box when itemTypeRange exists. This setting is optional. colorTransition Optional Indicates the color transition of middle items. The value is in range of -1 to 1. The default value is 0.5

### Usage Scenario

Consider a scenario where a salesperson wants to analyze their monthly salary and expenditure costs. A Cascade sparkline can depict how their finances go through progressive changes in a month.

C#
Copy Code
```// Get sheet

// Set data for sparkline
worksheet.SetValue(1, 0, "Salary");
worksheet.SetValue(2, 0, "Bonus");
worksheet.SetValue(3, 0, "Transportation expenses");
worksheet.SetValue(4, 0, "Food expenses");
worksheet.SetValue(5, 0, "Hotel expenses");
worksheet.SetValue(6, 0, "Financial investments");
worksheet.SetValue(7, 0, "Savings");
worksheet.SetValue(1, 1, 3500);
worksheet.SetValue(2, 1, 2500);
worksheet.SetValue(3, 1, -1000);
worksheet.SetValue(4, 1, -1000);
worksheet.SetValue(5, 1, -900);
worksheet.SetValue(6, 1, 300);
worksheet.Cells[7, 1].Formula = "Sum(B2:B7)";

// Set backcolor and forecolor for cells
```
Visual Basic
Copy Code
```'Get sheet

'Set data for sparkline
worksheet.SetValue(1, 0, "Salary")
worksheet.SetValue(2, 0, "Bonus")
worksheet.SetValue(3, 0, "Transportation expenses")
worksheet.SetValue(4, 0, "Food expenses")
worksheet.SetValue(5, 0, "Hotel expenses")
worksheet.SetValue(6, 0, "Financial  investments")
worksheet.SetValue(7, 0, "Savings")
worksheet.SetValue(1, 1, 3500)
worksheet.SetValue(2, 1, 2500)
worksheet.SetValue(3, 1, -1000)
worksheet.SetValue(4, 1, -1000)
worksheet.SetValue(5, 1, -900)
worksheet.SetValue(6, 1, 300)
worksheet.Cells(7, 1).Formula = "Sum(B2:B7)"

'Set backcolor and forecolor for cells
```