MATLAB: Importing data from HFSS and ploting in matlab

csvimportpolarradiation pattern

I designed a dipole in HFSS and exported the polar radiation pattern in csv format to matlab. now, i need help on how to plot the data and get the same result as HFSS. I also attached the raw csv format.

Best Answer

Good Evening Mordecai. The following code ingests and plots the data in a figure for each Phi angle. Please let me know if you have any questions.

[num, txt] = xlsread('pat.csv');
theta_polar_deg = num(:,1);
theta_polar_rad = deg2rad(theta_polar_deg);
for i = 1:length(txt-1)
      figure('Name',txt{i},'NumberTitle','off','MenuBar','none');
      Gain = num(:,i);
      polarplot(theta_polar_rad, Gain,'r')
      rlim([min(Gain)-5 max(Gain)+5]);
      ax = gca;
      ax.RTick = [-38 -26 -14 -2];
      ax.ThetaDir = 'clockwise';
      ax.ThetaZeroLocation = 'top';
      plotTitle = sprintf('Radiation Pattern %d',i);
      title(plotTitle)
  end

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MATLAB: Polarplot with negative theta display

You can plot it by tuning axes properties, like:

% Sample data
theta = deg2rad(-150:30:180);
rho = 10*rand(size(theta));
% Polar plot with [-180 180] degree
polarplot(theta,rho)
ax = gca;
ax.ThetaLim = [-180 180];
ax.ThetaZeroLocation = 'top';
ax.ThetaDir = 'clockwise';

MATLAB: Polar Plot with a moving marker

Not entirely sure what you mean by move around the circle but here is an example:

function clicktest()
theta = 0:0.01:2*pi;
rho = sin(2*theta).*cos(2*theta);
figure
ax(1) = polar(theta,rho,'--r');
hold on
ax(2) = polar(NaN,NaN,'g*');
set (gcf, 'WindowButtonMotionFcn', {@mouseMove,ax});
function mouseMove(object, eventdata,ax)
C = get (gca, 'CurrentPoint');
[theta rho] = cart2pol(C(1,1), C(1,2));
title(gca, ['(angle,factor) = (', num2str(theta*180/pi), ', ',num2str(rho), ')']);
markerspot = sin(2*theta).*cos(2*theta);
[x y]=pol2cart(theta,markerspot);
set(ax(2),'xData',x,'yData',y,'markersize',20);

Best Answer

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MATLAB: Polarplot with negative theta display

MATLAB: Polar Plot with a moving marker

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