MATLAB: Not understanding the function input arguments

function

I have found some function but the author has not given what type of input arguements we have to give in that function. Can someone help me in running the function "datared" and what type of input i need to give.

Best Answer

X_full (first paramter): A column vector of floating point data

Y_full (second parameter): A column vector of floating point data.

cs_s (third parameter): A scalar floating point number.

X_full and Y_full are intended to be data coordinates. cs_s is some kind of reduction factor.

According to the authors, datared() is a data reduction function. If you search their publication you can see it being called from other functions.

http://orbit.dtu.dk/files/5425815/Lennart.pdf

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With only a description, I can only guess. However, assuming that your data are row vectors, something like this will work:

x = -20:20;                                     % Create Data

y = exp(-(x.^2)/11) + rand(1,size(x(x>0),1));   % Create Data
y = y + [zeros(1,size(x(x<=0),2)) 0.5*rand(1,size(x(x>0),2))];
x_full = [x(x<=0), -fliplr(x(x<0))];            % Define & Flip X-Values For ‘(x<=0)’

y_full = [y(x<=0),  fliplr(y(x<0))];            % Define & Flip Y-Values For ‘(x<=0)’

figure(1)
plot(x_full, y_full)                            % Plot Result
grid

If they are column vectors, use flipud instead of fliplr, and replace the commas with semicolons:

x_full = [x(x<=0); -flipud(x(x<0))];            % Define & Flip X-Values For ‘(x<=0)’
y_full = [y(x<=0);  flipud(y(x<0))];            % Define & Flip Y-Values For ‘(x<=0)’

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