Hi @iac381
- For example, you can use the instruction “ONCE” to give a value to a parameter and this value is only read 1 time (therefore “ONCE”) by the program.
So, suppose you have the parameter x and you want to give it 1 time a starting value of 10, then you put “ONCE x = 10” at the beginning of the program. You can then have the program adjust the value of x again, but the starting value is 10.
- n is indeed the period over which the momentum is calculated and this n can be adjusted as desired.
- Hline (short for Horizontal Line) is the parameter (the value) that specifies the height at which the horizontal line should be drawn.
Hline = 0 is then used in the command “DrawHLine” which ensures that the horizontal line is drawn. DrawHLine[0] would have the same effect.
The term “Coloured” behind DrawHLine ensures that the horizontal line gets a certain color. Coloured(R,G,B) means R = Red, G = Green, B = Blue and you can set these colors with a certain value (0 to 255). (0 is no color)
So when you want a red line you say Coloured (255,0,0) and when you want a blue line you say Coloured(0,0,255).
You do the same with xMom, when xMom goes up through the zero line you want it to turn green so you say R=0 (no Red) G=255 (only green).
And when xMom drops through the zero line, you want it to turn red, so you say R=255 (Red only) and G=0 (no Green).
Each indicator must be closed with the command “Return” and behind Return you can specify what needs to be drawn so here:
Return xMom (draw the xMom line) Coloured (give the xMom line the following colors) (r, g, 0). So when xMom rises through the zero line in the program, the value for G=255 and R=0, xMom is then drawn with Coloured(0,255,0)
I hope it’s a little clear because it’s always hard to describe.
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