Hmmmm.... Source of Confusion is your inappropriate usage of term back-testing.
Anyways, there is a tool called "Cycle Lines" in Amibroker which can do what you want. Its bitmap image has three parallel vertical lines with one dashed horizontal line cutting it. You can use this tool to place repeating vertical lines on screen at preset intervals.
Drag and drop the tool and then double-click it to manually do the settings.
Some tips on doing the manual settings: Keep value of Start Y and End Y same. Manually enter start time as 9:30 AM and end time as 10:00 AM.
Extra tip: Keep color extremely faint
Anyways, there is a tool called "Cycle Lines" in Amibroker which can do what you want. Its bitmap image has three parallel vertical lines with one dashed horizontal line cutting it. You can use this tool to place repeating vertical lines on screen at preset intervals.
Drag and drop the tool and then double-click it to manually do the settings.
Some tips on doing the manual settings: Keep value of Start Y and End Y same. Manually enter start time as 9:30 AM and end time as 10:00 AM.
Extra tip: Keep color extremely faint
Good idea
for code to draw vertical lines every 30 minutes on lower time frame chart
Code:
Plot((floor(((TimeNum()%10000)/100)-0.01)==29),"",colorDarkGrey,styleOwnScale|styleNoLabel|styleHistogram,0,1);