Could anyone help me with the following code

code:
user=[2 4 ];
R=[2 3] 
Xmax=1
Ymax=1

for t = 1:length(user)
for i = 1:length(R)

      radius = R(i) 
      xsd=ones(1,user(t))*Xmax
      ysd=ones(1,user(t))*Ymax
      rrx=radius*sqrt(rand(1,user(t)))
      thetarx=2*pi*rand(1,user(t))
      xrx=xsd+rrx.*cos(thetarx)
      yrx=ysd+rrx.*sin(thetarx)
      th = 0:pi/100:2*pi
      xunit = radius * cos(th) + Xmax
      yunit = radius * sin(th) + Ymax
       figure
      plot(xunit, yunit)
      hold on
      plot(ysd,xsd,'r^')
      hold on
      plot(yrx,xrx,'ko')
      hold on
  end
  end

I want to have the graph for 2 user with respect to R=[2 3] on the same figure such that the 2 users should be scatterd.Similarly for 4 user with respect to R=[2 3] on the same figure such that the 4 users should be scatterd.Could anyone please help me on this.

Answer 1

[Adam Danz]

The template below will create a figure for each t-user and on each figure will be plotted all Rs for each t_th user.

for t = 1:length(user)
    figure
    axis
    hold on
    for i = 1:length(R)
        plot()
    end
end

This second template will create only 1 figure and all data will be plotted on the same axis.

figure
axis
hold on
for t = 1:length(user)
    for i = 1:length(R)
        plot()
    end
end

Did that answer your question?

[Prabha Kumaresan]

I used the first template in my code 
user=[2 4]
Xmax=1
Ymax=1
R=[2 3] 

for t = 1:length(user)

      figure
      axis
      hold on
  for i = 1:length(R)
      radius = R(i) 
      xsd=ones(1,user(t))*Xmax
      ysd=ones(1,user(t))*Ymax
      rrx=radius*sqrt(rand(1,user(t)))
      thetarx=2*pi*rand(1,user(t))
      xrx=xsd+rrx.*cos(thetarx)
      yrx=ysd+rrx.*sin(thetarx)
      th = 0:pi/100:2*pi
      xunit = radius * cos(th) + Xmax
      yunit = radius * sin(th) + Ymax
      figure(1)
      plot(xunit, yunit)
      hold on
      plot(ysd,xsd,'r^')
      hold on
      plot(yrx,xrx,'ko')
      hold on
  end
  end

But i am unable to get the graph as stated in the first template. Could you please help me on this.

[Adam Danz]

I need to know more specifically what the problem is with the new version of your code. Also, there's no need for you to call 'figure(1)' in your for-loop. Also, you can remove all the 'hold on' commands within the for-loop. Could you describe your goal?

[Prabha Kumaresan]

the reason to call figure(1) is to have two different radius on the same graph.If i remove hold on i am unable to get the circle on the graph.

What I actually need is i need to have 2 graph one for user=2 with two different radius and another for user=4 with two different radius. Could you please help me on this.

[Adam Danz]

Do you want two separate figures or do you want one figure with different axes on the figure?

[Adam Danz]

I want two separate figures one with respect to user=2 containing two different radius and other with respect to user =4 with two different radius.

My template #1 does exactly what you're asking. As I mentioned, you can (and should) remove the 'hold on' lines within your for-loop since you're holding the axis as soon as it's created.

This code produces two figures (one for each user) Each figure has one axis. Each figure contains two circles.

user=[2 4 ];
R=[2 3]
Xmax=1
Ymax=1
for t = 1:length(user)
    figure();               %CREATE A FIGURE FOR EACH USER
    axh = axes();           %CREAT AXIS
    hold(axh, 'on')         %HOLD THE AXIS
    for i = 1:length(R)
        radius = R(i)
        xsd=ones(1,user(t))*Xmax
        ysd=ones(1,user(t))*Ymax
        rrx=radius*sqrt(rand(1,user(t)))
        thetarx=2*pi*rand(1,user(t))
        xrx=xsd+rrx.*cos(thetarx)
        yrx=ysd+rrx.*sin(thetarx)
        th = 0:pi/100:2*pi
        xunit = radius * cos(th) + Xmax
        yunit = radius * sin(th) + Ymax
        plot(axh, xunit, yunit)
        plot(axh, ysd,xsd,'r^')
        plot(axh, yrx,xrx,'ko')
        axis equal          %MAKE ASPECT RATIO EQUAL SO CIRCLES LOOK LIKE CIRCLES
    end
end

Run this code. If it's not doing what you want it to do try again at describing what you'd like.

[Prabha Kumaresan]

ok.I am getting two separate figures each with two different radius.But for user=2 i need to have in total of 2 users in one figure,but i am getting 4 instead of 2.In the same way in another figure i am getting 8 instead of 4.Could you please help me on this.

[Adam Danz]

I don't know what you're code is supposed to do so I can only take guesses. I think the error might be in how you're using the ones() and rand() functions.

users = [2,4]; 
t = 2; 
ones(1,user(t));  %== ones(1,4); you're creating 4 ones.
rand(1,user(t));  %== rand(1,4); you're creating 4 random numbers

Do you mean

rand(1,length(user)) %? This creates 2 numbers, one for each user.

Since you're creating 4 ones in xsd and ysd of course you'll get 8 data points at the end of that loop.

This is where learning how to use debug mode is critical in troubleshooting your code.

[Prabha Kumaresan]

i want two separate figures with respect to 2 user and 4 user. If it is with respect to 2 user the figure should contain only 2 users with respect to two different radius.But according to the code i am getting 2 users each for different radius which i doesnt need.so in total with respect to two radius i need to get 2 users which i actually need.Could you please help me on this.

[Adam Danz]

Prabha, I don't understand what you need. Please describe each figure or draw a picture and upload it.

Tell me what's wrong here:

1. you want two figures
2. In figure 1, there will be data from 2 users (4 data points).
3. In figure 2, there will be data from 4 users (8 data points).
4. In figure 1, there should be two circles.
5. In figure 2, there should also be two circles.

More importantly, is this your code or are you trying to adapt someone else's code? Have you tried stepping through the code in debug mode to understand what the problem is? Please reply to those questions first before I can help you more.

Answer 2

[Prabha Kumaresan]

I want two separate figures one with respect to user=2 containing two different radius and other with respect to user =4 with two different radius.