how to mirror plots?

i hv theta value as 60 and 61 each theta value has phi of 120 240 with corresponding total values.

i hv to mirror data that is phi values data from 120 to 180 should be mirrored to 180 to 240 and then its plot is plotted. aim is to get plots symmetry xaxis is phi y axis is total with respect to theta percentile plots.i hv tried with excel sheet but my data is in .tab file how to import that format file and plot from it

a=xlsread('1GHzHH.xlsx');
theta=a(:,1);
phi=a(:,2);
total=a(:,3);
figure
plot(phi,total)

% f=[1];
% pol=['HH''VV'];
% 
% for i=1:size(pol)
%     m=strcat(pol,'GHz')
%     j=strcat(f,m)            %i  m trying to read file which i hv imported file name is 1GHzHH.tab

% theta=data(:,1);
% phi=data(:,2);
% total=data(:,3);
% for  j=1:nume1(theta)
%     for k=1:nume1(phi)
% 
%     end
% end
% end

Answer 1

[Cris LaPierre]

I'm not aware of a function for this, but it can be achieved with logical indexing and some math.

data1GHH=readtable('1GHzHH.xlsx')

data1GHH = 242x3 table
    theta    phi    total
    _____    ___    _____

     60      120     -4  
     60      121     -3  
     60      122     -2  
     60      123     -1  
     60      124      0  
     60      125      1  
     60      126      2  
     60      127      3  
     60      128      4  
     60      129      5  
     60      130      6  
     60      131      7  
     60      132      8  
     60      133      9  
     60      134     10  
     60      135     11  

ind = data1GHH.phi<=180;
data1GHH.phi(ind) = abs(data1GHH.phi(ind)-180)+180;

plot(data1GHH,"phi","total")

[Torsten]

??

[ramya]

i hv to get symmetry data and plot from given file

[Sam Chak]

@ramya, Please confirm if is the line of reflection.

data1GHH= readtable('1GHzHH.xlsx');
phi     = data1GHH.phi;
total   = data1GHH.total;

subplot(211)
plot(phi(1:61), total(1:61)), xlim([120, 240]), grid on
xline(180, '--', 'color', 'red')
title('When \theta is 60')
xlabel('\phi'), ylabel('total')

subplot(212)
plot(phi(122:183), total(122:183)), xlim([120, 240]), grid on
xline(180, '--', 'color', 'red')
title('When \theta is 61')
xlabel('\phi'), ylabel('total')

[ramya]

I hv to plot on a single plot x-axis will be phi and y axis total values..and all this I hv to plot with respect to theta.. Symmetry in this I meant as I m taking a very small example to explain A=1 2 3 4 5 6; B=0.2 0.5 0.6 0.7 0.8 After mirroring the data from middle b will be B= 0.2 0.5 0.6 0.5. 0.2 And then plot the results

So similiar I hv to do for phi and total values

[Cris LaPierre]

So the raw data looks like this

A=[1 2 3 4 5];
B=[0.2 0.5 0.6 0.7 0.8];
plot(B,A)

but should look like this

B= [0.2 0.5 0.6 0.5 0.2];
plot(B,A)

If I adapt the code I shared above for this example, it would look like this.

total=[1 2 3 4 5];
phi=[0.2 0.5 0.6 0.7 1]; % modifying your values so they are in fact symmetric
ind = phi>0.6;
phi(ind) = 0.6 - (phi(ind)-0.6)

phi = 1x5

0.2000 0.5000 0.6000 0.5000 0.2000

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plot(phi,total)