How do i create a realtime line graph

I am hoping to create a realtime line graph with price on the Y axis. Wanting to create a stock market simulation line graph that moves randomly +/- x amount of cents every second. Unsure how i might start this.

any help would be appreciated. thanks.

Well for starters you'd have a variable price that you adjust every second, for example it changes somewhere between -10 and +10 every second:

System -> Every 1 second: Set value "price" = price + random(-10,10)

Then you'd store this into an array. The length would be how long into the past you want to show the graph, for example, 1 minute = 60 seconds, so your array should be length 60. You'd use the FIFO method construct.net/en/make-games/manuals/construct-3/plugin-reference/array which will remove the oldest value (older than 60 seconds) and add the newest value to the front.

Finally you use canvas to draw the line. Clear the canvas, then loop through your array.

construct.net/en/make-games/manuals/construct-3/plugin-reference/drawing-canvas

Then draw a line for each value from the previous value to the current value

Array for Each: Draw line from X: (array.currentX-1)*20 Y: array.at(array.currentX-1) to X: array.currentX*20 Y: array.currentValue

This is off the top of my head, you might need to tinker with some values etc.