Hello!
So I have a simple array, size 100.

I want to create a function that will plot a straight line into it, like this (this was hand drawn for the purpose of demo):

The important thing is that whatever function that will draw this line will have a variable (controlled by a slider) that defines the slope of this line, as illustrated below:

My obvious first choice would have been the [line] object, but it seems you can only use it for time domain functions, and in my case I want the lines to be drawn "instantaneously" (so far as possible) . Any suggestion?

@tomatoKetchup draw_line.pd
There might be a better way..... especially as the rate I made log to have better control.
It needs 0 (flat) to 100 (to -1 immediately) doing the calculation this way....... which is a problem for good control with a fader..... less so with data I think.....
David.

Oh nice one! Works like a charm with a [bang~] for real-time control.

This was my attempt but it was way too sluggish...

You're a star!

@tomatoKetchup Your use of [bang~] made me think of this other way:

@tomatoKetchup It could be enough to draw the line only when the fader value changes.

draw-line.pd

draw-line2.pd

@ingox You are right on this one, this would save some computing resources. I'll try your idea.

EDIT: I see you have posted 2 slightly different versions. Which one is more optimised?

@tomatoKetchup The first one sets the array to zero and only computes the necessary steps. The second one is tighter, but always computes all array values even if they are zero. So i think the first one is more efficient.

@ingox I see, thanks for the clarification.

@ingox I'm trying to decipher your code. What does the "const 0" in the message box do exactly? Never come across that and can't find it in the documentation.

@tomatoKetchup Setting the array to zero. It is in the help file of [array define].

@ingox Ah yeah, thanks!