Plot the same data once normalized values on the left y-axis and once with units on the right ; the same for bottom and top x-axis

I want to plot the same data once with normalized values on the left y-axis and once with units (GW) on the right ; the same for bottom and top x-axis. I tried the code below based on research in Matlab answers, but it does not work (I include the error I am getting below). Also, I want to have the same for x axis too, but I do not know how to implement the yyaxis for the x axis. Could you help me please? Thanks.

c=[2.88          1.27  100780000.00   44526000.00
          2.88          1.27  100860000.00   44561000.00
          2.89          1.28  100940000.00   44599000.00
          2.93          1.16  102320000.00   40641000.00
          2.93          1.16  102400000.00   40673000.00
          2.87          1.40  100200000.00   48844000.00
          2.87          1.40  100280000.00   48886000.00
          2.87          1.40  100360000.00   48924000.00
          2.87          1.40  100440000.00   48963000.00
          2.88          1.40  100520000.00   49001000.00];


wn=c(:,1);
sn=c(:,2);
w=c(:,3);
s=c(:,4);


figure();
yyaxis left
plot(wn,sn,'-ok');
set(gca, 'YLim', [min(sn), max(sn)])  % #important

yyaxis right

set(gca,'YTick',s, 'YLim', [min(s), max(s)]) % #important
ylabel('PS GW');

% go back to left axes (main axes)
yyaxis left
grid on;
xlabel('Pw Normalized');
ylabel('PS Normalized');

I am getting this error below. However if I sort the order then it will not be the same vector.

Error using matlab.graphics.axis.Axes/set
Value must be a numeric vector whose values increase.

Error in TwoTwoNewRevApplast (line 27)
set(gca,'YTick',s, 'YLim', [min(s), max(s)]) % #important
 

Answer 1

[Hassaan]

% Sample Data
c = [2.88 1.27 100780000.00 44526000.00; 2.88 1.27 100860000.00 44561000.00; 2.89 1.28 100940000.00 44599000.00; 2.93 1.16 102320000.00 40641000.00; 2.93 1.16 102400000.00 40673000.00; 2.87 1.40 100200000.00 48844000.00; 2.87 1.40 100280000.00 48886000.00; 2.87 1.40 100360000.00 48924000.00; 2.87 1.40 100440000.00 48963000.00; 2.88 1.40 100520000.00 49001000.00];
wn = c(:,1);
sn = c(:,2);
w = c(:,3)/1e6; % Convert to GW for illustration
s = c(:,4)/1e6; % Convert to GW for illustration

% Normalizing data for illustration
wn_norm = (wn - min(wn)) / (max(wn) - min(wn));
sn_norm = (sn - min(sn)) / (max(sn) - min(sn));

% Assuming wn and w are your original x-data and the converted scale you wish to display.

figure;
yyaxis left
plot(wn, sn_norm, '-ok'); % Plot normalized data vs. original x-data
ylabel('Normalized PS');

yyaxis right
plot(wn, s, '-.xr'); % Plot original units data vs. original x-data
ylabel('PS (GW)');

xlabel('Pw');
grid on;
title('Dual Y-axis Example');

% Creating a top X-axis for a different scale or unit representation
ax1 = gca; % Get the current (left) axes
ax1_pos = ax1.Position; % Get the position of the original axes for alignment

% Create a new axes for the top X-axis
ax2 = axes('Position', ax1_pos, 'XAxisLocation', 'top', 'Color', 'none', 'YTick', [], 'YColor', 'none');

% Set the limits of the new axes to match the original
ax2.XLim = ax1.XLim;

% Assumming wn represents the x-data. For the top X-axis, we want to display

% One approach can be to use linspace to generate ticks over the range of wn
numTicks = 5; % Example: Number of ticks you want
newTicks = linspace(min(wn), max(wn), numTicks);
ax2.XTick = newTicks;

% Assuming 'w' contains the data in the transformed scale or units we want to display,
% calculate a representative set of labels based on the new tick positions
% A simplistic approximation and should be adjusted according to needs
newLabels = linspace(min(w), max(w), numTicks);
ax2.XTickLabel = arrayfun(@num2str, newLabels, 'UniformOutput', false);

xlabel(ax2, 'Transformed Scale or Units');

% Ensuring the left y-axis (yyaxis left) is active for further interactions
axes(ax1); % Makes the left y-axis active

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[Katerina F]

Thanks. I think I should clarify.

What I want to plot is already there in my code, no need for conversions because are already converted. I want to plot the vector sn versus wn in y and x axis in correspondance and the vector s versus w in the secondary y axis (right) and on the secondary x axis (top). But they are the same data, that is there should be just one line in the end not two.