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Getting statistics from a struct
If measurementA is just one value, you can do: mean([myResults.MeasurementA]) Try it for your data and look at the resul...

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Draw Legend in MATLAB
For the plot you DO NOT want to show in the legend, do: h = plot(x,y,'-+); %your data set(get(get(h,'Annotation'),'Lege...

presque 12 ans il y a | 0

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How to read many arbitrary text files in MATLAB?
k = 1; while exist(['ClCdCm',num2str(k),'.txt'],'file') %insert code to read file k = k + 1; end

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fprintf not printing correct string
Use: fprintf('%4s %15s \n',str_dat(i,:),num2str(dat(i))) You were not telling matlab to use all the columns of the array...

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Get new variable based on the average of a column - Matlab
See file

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Easy textscan question. What is this input?
Yes, 1 is the number of times it repeats the ignore 2 strings, read number instruction. You can use fgetl to read one line at a...

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PushButton HitCounter / simple question
Add handles.counter = 0; in the GUI opening function. Then in the pushbutton, increment the counter handles.counte...

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Using ODE45 to solve a state space system.
First, the size of the array of initial conditions has to be the same of the number of equations you want to solve. So, in your ...

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How to loading a vector with values from a logical index
Vout = Vin(Idx)

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HOW TO WRITE THE FOLLOWING FUNCTION IN A MATLAB PROGRAM ? ALSO TELL THE WAY TO PLOT F(X)
x = linspace(1e-6,2-1e-6,100); f1 = x(x>0&x<1); f2 = x(x>1&x<2)/2+5; plot(x,[f1,f2])

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How to take the average of each column of a matrix without including a certain number
Let's call your array "a": my_mean = zeros(size(a,2),1); for i = 1:size(a,2) d = a(:,i);d = d(d~=0); my_me...

presque 12 ans il y a | 1

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Problem with fsolve for non linear system
Do this: - in your main function, after calculating P1,P2,P3, put: P0 = [P1(i,1); P2(i,1); P3(i,1)]; options = optimo...

presque 12 ans il y a | 1

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Multiple logic outputs not working
You need to wrap everything into a loop DTS = false(3,1); for i = 1:numel(month) ...your code end and use month...

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Issue with GUI editbox callback
You need to save your variables (i.e. the strings from the editboxes) as fields of the structure handles. So correct your functi...

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Importdata does not import whole .txt file
I don't know what is wrong with importdata. This version will work. The size of k was based on your file, it may need to be chan...

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Undefined function t for autonomous ODE
You need to put this part in a separate function and run the new function you create options = odeset('RelTol', 1e-4, '...

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how to compare special characters in string
If index is empty, $ is not in the string str='$(0)parameter'; index = strfind(str,'$');

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How to have a function have any number of input arguments
function myfunction(varargin) if(nargin == 1) ..code if there is only one input ...e.g., x = varargin{1}; ...

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How to find repeated array in a matrix
d = []; for i = 1:numel(b) d = [d;find(a==b(i))]; end

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How to create a new matrix with some known rows
c = b(a,:)

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Different outcome by using self time iteration and ode15s.
If you look into your ode, there are a number of variables that you reinitialize any time the function is called, whereas in you...

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How can I write in excel multiple columns as vectors?
You can create dynamically the range to write to. For instance, starting from A1: xlswrite('myfile.xlsx',Y, ['A1:',char(64+...

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Removing data points that are out of a specific boundary
[i,~] = find(A(:,1) > 5 & A(:,2) < 4); A(i,:) = []

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How do you operate on only the non-zero elements of columns within an array?
For sum: netcfq(netcfq<0) = 0; mysum = sum(netcfq,1) for other functions, you could use a loop on the columns and a t...

presque 12 ans il y a | 1

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How to apply conditional statements so as to select certain rows or columns on a given dataset.
clc clearvars % Read file filecontent = cell(1000,1); k = 0; fid = fopen('mydata.txt','r'); while 1 ...

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What should be modified inside the for loop?
Change these lines: f_x_loop = (F*x_a)/(s*Q) f_x_loop_save(i) = f_x_loop(i) into: f_x_loop_save(i) = (F*x_a)/(s*...

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Adding cell array elements
If all the cells are consistent: mysum = C{1}; for i = 2:numel(C) mysum = mysum + C{i}; end

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for loop and xlswrite
K is not an integer so you can't use it to select the excel cell. Do this: j = 0; for k=1:0.5:5 j = j + 1; ...

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I have X vector and Y vector. I have plotted graph. Now I sorted out some peak values (from Y). Stored in pks. Now, corresponding to these peaks values(pks), how I can find its corresponding X values?
If there is a biunivocal correspondence between X and Y (i.e. to each value of X corresponds only one value of Y and vice versa)...

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Assignment between structures with common fields
If you do not want to assign all the fields of A to B, I'd do: f = {'field1','field2'}; % list of fields for i ...

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