---
id: "M:cAlgo.API.Internals.Algo.CreateDataSeries"
kind: "method"
type: "T:cAlgo.API.Internals.Algo"
url: "https://help.ctrader.com/ctrader-algo/references/General/Algo/CreateDataSeries/"
---

> Documentation index for agents: https://help.ctrader.com/ctrader-algo/llms.txt · machine index: https://help.ctrader.com/ctrader-algo/api.json

# Algo.CreateDataSeries

Member of [Algo](https://help.ctrader.com/ctrader-algo/references/General/Algo/index.md).

## CreateDataSeries()

Initialization of an IndicatorDataSeries.

Environments: Desktop supported · CLI supported · Cloud supported.

C#:

```csharp
public IndicatorDataSeries CreateDataSeries()
```

Python:

```python
api.CreateDataSeries() -> IndicatorDataSeries
```

### Returns

`IndicatorDataSeries` — 

### Examples

C#:

```csharp
private IndicatorDataSeries series;

protected override void Initialize()
{
    series = CreateDataSeries();
}
public override void Calculate(int index)
{
    series[index] = (Bars.ClosePrices[index] + Bars.OpenPrices[index]) / 2;
}
```

Python:

```python
def initialize(self):
    self.series = api.CreateDataSeries()

def calculate(self, index):
    self.series[index] = (api.Bars.ClosePrices[index] + api.Bars.OpenPrices[index]) / 2
```