Changing from logarithmically spaced

I currently have a function which gives me center frequencies, but I want to change the chape to be more like the attached. What I have right now is similar to this but flipped, how can I change my code to give me center frequencies shapes like the image? Thank you for your time!

fs = 20e3; 
numFilts = 32; % 
filter_number = 5;
order = 4;
CenterFreqs = logspace(log10(50), log10(8000), numFilts);
figure
plot(CenterFreqs)
title('Center Frequncies')

Answer 1

[Mann Baidi]

Hi,

As per the information provided, I can understand that you would like to shape your graph same as the shape of image shared. I would suggest you to plot the data of the 'CenterFreqs' by multiplying it -1 and plot the graph in the -ve -axis. So, basically plotting the mirror image w.r.t the origin (0,0). You can use this modified code:

fs = 20e3; 
numFilts = 32; 
filter_number = 5;

CenterFreqs = logspace(log10(50), log10(8000), numFilts);

plot(CenterFreqs)
title('Original Graph')

figure
CenterFreqs=-1*CenterFreqs; % Mirror image w.r.t to x-axis
plot(-1:-1:-32,CenterFreqs) % Mirror image w.r.t to y-axis
title('Desired Graph')

Hoping this will help in resolving the issue!

Answer 2

[Dyuman Joshi]

fs = 20e3;
numFilts = 32;
filter_number = 5;
order = 4;
CenterFreqs = logspace(log10(50), log10(8000), numFilts);
figure
plot(CenterFreqs, 'DisplayName', 'Original Plot')
hold on

%flipping x and y values accordingly
plot(flip(1:numel(CenterFreqs)), max(CenterFreqs)-CenterFreqs,  'DisplayName', 'Modified Plot')
title('Center Frequncies')
legend('Location', 'best')

[S]

The shape is now correct, but I use center frequencies later so I do not want to change just the plot I want to also change the values. I tried this, but the shape is incorrect, how could I modify this?

fs = 20e3; 
numFilts = 32; % 
filter_number = 5;
order = 4;
CenterFreqs = logspace(log10(50), log10(8000), numFilts);
CenterFreqs=flip(1:numel(CenterFreqs));
figure

[S]

@Dyuman Joshi

[Dyuman Joshi]

Sorry, but I don't understand what you meant to say.

Do you want to get the values of the flipped/mirrored plot?

Then use this -

flipx_values = flip(1:numel(CenterFreqs));
flipy_values = max(CenterFreqs)-CenterFreqs;

[Dyuman Joshi]

Any updates, @S?

[S]

@Dyuman Joshi Yes so if I want to resave these flipped y values under centerfreqs, I could just do

CenterFreqs=flipy_values because when I do this it messes up the rest of my script when it should just be the reverse of the original CenterFreqs