MATLAB Problem

[drinkmorejava]

NM, got it. I'm just exporting the bode data with, [mag,phase]=bode(G,w); and redoing the plots
http://www.drinkmorejava.com/Prelab%203.m


Basically, we were given a theoretical transfer function and the physical circuit, then took experimental measurements, and now need to plot the experimental values for Gain and Phase on top of the transfer function graph.

I used

figure(1)
N=[45454.5]
D=[1 45454.5]
G=tf(N,D)
bode(G)

My question is, how can I plot the experimental points on top of the Bode plot? Trying something like

hold on
plot(-5e4,-30,'*')

Will let me draw on the Phase plot, but how can I get on the Magnitude plot? I tried playing with subplot(2,1,1), but it doesn't seem to do anything but squish the entire plot.

Thanks in advance

 

[pray4mojo]

cant you just use the plot editor and click on the plot and plot points that way?

 

[drinkmorejava]

Originally posted by: pray4mojo
cant you just use the plot editor and click on the plot and plot points that way?

Can only select points along the plot to display their properties

 

[Fenixgoon]

yeah, not sure how to add points onto the bode plot, and i'm digging through the m files themselves (bode.m, ltiplot.m, etc.)

 

[drinkmorejava]

Originally posted by: Fenixgoon
yeah, not sure how to add points onto the bode plot, and i'm digging through the m files themselves (bode.m, ltiplot.m, etc.)

Thanks for looking

I did it in my convoluted way, and it seems to work

http://www.drinkmorejava.com/Prelab%203.m