how to plot phasors

[odlanor]

I am just looking for a routine to plot a group of electrcal phasors like:
polar representation
1.00 1.00 1.00
-30.00 -150.00 90.00

or

equivalent rectangular representation
0.8660 - 0.5000i
-0.8660 - 0.5000i
0.0000 + 1.0000i

 

[electricpete]

http://stackoverflow.com/questions/1962332/how-to-draw-vectors-physical-2d-3d-vectors-in-matlab

=====================================
(2B)+(2B)' ?

 

[flash3780]

Have you looked into the compass command?

A = [0.866-0.5*i, 0.866+0.5*i, 0.000+1,0*i]'
compass(A)

//signed//
Christopher K. Hubley
Mechanical Engineer
Sunpower Incorporated
Athens, Ohio

 

[flash3780]

I suppose I should plot the output as well .

Check my blog for some tips on making great plots in Octave or Matlab:

http://engineeringliberty.wordpress.com/2011/10/07/making-great-plots-in-octave-and-matlab-too/

//signed//
Christopher K. Hubley
Mechanical Engineer
Sunpower Incorporated
Athens, Ohio

 

[odlanor]

Phasor 2D graphic, is an Alternating Current conception
I guess everybody make mistake. Attachment are explanation and a matlab program, I found out after.
Thank you.

 

[odlanor]

matlab programa

 

[flash3780]

The [tt]compass[/tt] function produces the same output as Phasor.m, no?

//signed//
Christopher K. Hubley
Mechanical Engineer
Sunpower Incorporated
Athens, Ohio

 

[odlanor]

No.

 

[flash3780]

Strange... seems to work for me. Did you check you inputs to the compass function against what it's expecting? Mind you, I'm using Octave rather than Matlab, so perhaps there's a Matlab bug that I'm unaware of. Here's my test code, and I've attached the resulting plot:

clear; clc; close all;
A = [0.8660 - 0.5000*i;  -0.8660 - 0.5000*i;  0.0000 + 1.0000*i];
B = [  1,    1,  1];
C = [-30, -150, 90];

h = figure(1);
subplot(2,2,1);
compass(A);
title('Compass Function Plotting Rectangular Representation');

subplot(2,2,2);
Phasor(A);
title('Phasor Function Plotting Rectangular Representation');

subplot(2,2,3);
U = B.*cos(C.*pi/180);
V = B.*sin(C.*pi/180);
compass(U,V);
title('Compass Function Plotting Polar Representation');

subplot(2,2,4);
Phasor([B;C]');
title('Phasor Function Plotting Polar Representation');

W = 5; H = 4;
set(h,'PaperUnits','inches')
set(h,'PaperOrientation','portrait');
set(h,'PaperSize',[H,W])
set(h,'PaperPosition',[0,0,W,H])
FS = findall(h,'-property','FontSize');
set(FS,'FontSize',6);
print(h,'-dpng','Phasor-v-compass.png')

//signed//
Christopher K. Hubley
Mechanical Engineer
Sunpower Incorporated
Athens, Ohio

 

[odlanor]

flash3780,
I make mistake.you´re all right.
I am not expert in matlab.

 

[flash3780]

No worries, I hope that I was able to help. Check out my blog post for some tips to help produce professional plots with Matlab/Octave.

//signed//
Christopher K. Hubley
Mechanical Engineer
Sunpower Incorporated
Athens, Ohio
--

http://engineeringliberty.wordpress.com