TradeStation Help
When this option is enabled, your charting application recalculates the indicator each time a tick is collected. If you do not enable this option it will wait for the close of each bar before recalculating.
For example, if your data interval is set to daily, your indicator can recalculate each time a tick is received or once at the end of the day, when the daily bar is completed. Select the Update value intra-bar check box when you want the indicator to recalculate with each new tick.
Activate a Chart Analysis window containing data. Access using the menu bar Format > Analysis Techniques and select the Analysis Techniques tab. The Format Analysis Techniques & Strategies dialog is displayed.
Click OK, click Close when finished.