draw a straight line

[Bilal44]

Design a system that can plot a straight line from the coordinates of two given points

using for loop and formula from block diagram

can someone help

[altenbach]

My guess that this is homework, why else would there be such specific requirements (FOR loop, formula, etc.). You don't really need any of that but it's a good learning experience.

• Start with the training resources listed at the top of the forum.
• Look at your class notes
• talk to your classmates

How far did you get so far?

• Did you figure out how to create a new VI? (it's not a "system!)
• Did you find the front panel and block diagram?
• Did you find the FOR loop?
• Did you find a way to enter the coordinates on the front panel?
• For arbitrary lines, use an xy graph. did you find that? Did you read the help for it?
• Given two points, a plot of the xy graph can draw a line between them. No extra code needed.
• Personally, I would use plain graphical code, no formula node
• etc.

[JÞB]

The length component of the problem was solved a few millennia ago by a guy named Pythagoras. 

It sounds like you have a point A to start at  and a point B to end at already.  All you need then is to figure out which way to go and how far to go that way.

That sounds like a nice continuation of the Greek theme!  Maybe you could find some Math Functions that have parameters of Rho and Theta 😉

I cannot understand why you would need a loop and all the functions needed are easily available. 

[altenbach]

I did not see any "length" component in the problem description, but the term "plot" could of course mean many things. For simplicity, I assumed a virtual line on an xy graph, but it could easily also be about how to drive two stepper motors of an xy stage moving a real pen around. 😄

[JÞB]

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@altenbach wrote:

I did not see any "length" component in the problem description, but the term "plot" could of course mean many things. For simplicity, I assumed a virtual line on an xy graph, but it could easily also be about how to drive two stepper motors of an xy stage moving a real pen around. 😄

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Oh, in that case we only need M and B!  Double check me but, isn't get scale (linear) on the Math pallet still?  I thought that accepted an array of points as cluster <x,y>

[altenbach]

We still don't know what a "system" is (as in "... design a system ...").

All we probably need is a size=2 complex 1D array defining the two points, a wire, and a xy graph. 🙂