Respondida
How can I insert a sequental columns in a matrix with a lag of three columns?
A=randi(9,4,3) n=size(A,2) B=nan(size(A,1),n*3) idx=1:3:size(B,2) B(:,idx)=A

casi 10 años hace | 0

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Respondida
How to add new rows to text file with missing data?
s=importdata('fic.txt') out=zeros(s(end,1),4) out(s(:,1),:)=s

casi 10 años hace | 1

Respondida
How to use findpeaks?
You can find what you want in the help <http://www.mathworks.com/help/signal/ref/findpeaks.html>

casi 10 años hace | 0

Respondida
How to delete empty lines in a table
If A is your table idx=all(cellfun(@isempty,A{:,:}),2) A(idx,:)=[]

casi 10 años hace | 2

Respondida
Read text file in MATLAB
M=importdata('yourfile.txt') a=regexp(M,'\S+','match'); b=strrep([a{:}],'j','j*') c=str2double(b) out=reshape(c,[],2)

casi 10 años hace | 0

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Respondida
How can I delete header from a .txt file and save it?
fid=fopen('file.txt') s=textscan(fid,'%s%s%s%s%s','headerlines',1) fclose(fid) ss=[s{:}] fid1=fopen('file.txt','w') for k...

casi 10 años hace | 0

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Respondida
Replace Cell Array with other Cell Array
a1 = { 'i', 'love', 'you', 'you', 'love'; 'i', 'you', 'love', 'i', 'much'} a2 = { [], [], [], 'so', 'much...

casi 10 años hace | 0

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Respondida
How to find the value in a column that's most close to a specific number?
A = [1;2;3;4;5;6;7] b=2.7 [~,idx]=min(abs(A-b))

casi 10 años hace | 1

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Respondida
Problem: Invalid dimensions specified for output port..
C=0 and D=0 means that your system output will be always equal to 0. Plus the feedback K*u is a 1x5 array when your state space ...

casi 10 años hace | 0

Respondida
Dividing matrix in four parts
A=rand(210,3); out=mat2cell(A,[40 60 30 80]',3) You have your 4 matrices out{1} out{2} out{3} out{4}

casi 10 años hace | 0

Respondida
How to separate log file data containing different strings?
fid=fopen('fic.txt') line=fgetl(fid); k=1; while ischar(line) a{k,1}=line; line=fgetl(fid) k=k+1 end fclos...

casi 10 años hace | 0

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Respondida
how can I generate a sequence of sinc pulses corresponding to a given sequence.like for 1 plot positive sinc and for 0 plot negative but in sequence and on same plot
t=-5:.001:5; x = randsrc(1,200,[1,-1,; .5,.5]); n=length(x); w=0.5; p=sinc(2*w*t); figure hold on for ii=1:n plot(...

casi 10 años hace | 0

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Respondida
roots of a complicated function
Use solve function <http://www.mathworks.com/help/symbolic/solve.html>

casi 10 años hace | 0

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Respondida
convert symbols to variables
syms x d f = x*sin(d) df=diff(f,d) d1=pi x1=5 out=subs(df,[d x],[d1 x1])

casi 10 años hace | 0

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Respondida
Search for an element in cell array?
A=[NaN 51.1512 4.0000 6.0000 NaN 80.7646 3.0000 6.0000 NaN 89.3755 2.0000 6.0...

casi 10 años hace | 0

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Respondida
I want to create a 3D mesh that looks like this
[xx,yy]=meshgrid(x,y) mesh(xx,yy,zz)

casi 10 años hace | 0

Respondida
Create a table with values
table function was introduced in Matlab R2013b, what version of Matlab are you using?

casi 10 años hace | 1

Respondida
Using for loops with a logical to compute means of different Names.
M={'A' '1'; 'B' '5'; 'C' '13'; 'B' '7'; 'A' '11'} [ii,jj,kk]=unique(M(:,1)) out=[ii accumarray(kk,(1:numel(kk))',[],@(x) {me...

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Respondida
What code is needed for the following for example: 'A' '1' ; 'B' '5' ; 'C' '13' ; 'B' '7' ; 'A' '11'
a={'A' '1'; 'B' '5'; 'C' '13'; 'B' '7'; 'A' '11'} b=str2double(a(:,2)) idx=ismember(a(:,1),'B') out=mean(b(idx))

casi 10 años hace | 0

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Respondida
How can i find an eleiment which comes only one in a matrix ?????
A=[1 2;1 3;1 4;1 5;2 4] [ii,jj,kk]=unique(A) b=accumarray(kk,(1:numel(kk))',[],@numel) out=ii(b==1)

casi 10 años hace | 1

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Respondida
Finding a row with a certain condition
A=[733458 91 1.01510000000000 1.01680000000000 1.01490000000000 1.01520000000000 1.01585000000000 733458 112 1.01620000000000...

casi 10 años hace | 1

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Respondida
how to remove unwanted zeros from a vector
a=[ 0 5 0 0 0 0 4 5 6 0 0 0 9 9 8 0 7 6 0 0 0 0 0 0 3 4 4 0] idx=a==0 ii1=strfind([0 idx],[0 1]) ii2=strfind([idx 0],[1...

casi 10 años hace | 1

Respondida
finding a string in a cell array
ids1={'519448(EPS1MN)' '519448(EPS2MN)' '519448(EPS3MN)' '519448(EPS4MN)' '519448(EPS5MN)' '519448(LTMD)' '519448(P)' '...

casi 10 años hace | 0

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Respondida
Concatenate cell of arrays
A={randi(5,3,5) randi(5,2,5)} B=cell2mat(A')

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Respondida
Cumulative sums of values corresponding to all duplicate values in a vector
Identification = [1 1 1 1 2 2 2 3 3 3 3 3 3 4 4 4 5 5 5 5 5] Year = [2013 2012 2011 2010 2012 2011 2010 2008 2007 2006 2005 2...

casi 10 años hace | 0

Respondida
How to plot two functions by using looping values in the same graph using Matlab?
instead plot, use scatter function scatter(j,m) Or store all your values in one array called m with same size as j, and ...

casi 10 años hace | 0

Respondida
How to convert a file containing real numbers into binary/hexadecimal?
You can use dec2bin and dec2hex function

casi 10 años hace | 0

Respondida
How to get pair of subplots in two different figures.
figure(1) plotyy(t1,x1,t2,x2) figure(2) plotyy(t3,x3,t4,x4)

casi 10 años hace | 0

Respondida
How to select elements in an array that are in sequence?
a=[1 2 3 4 31 32 33 34 35 36 37 38 39 40 41 42 56 57 58 59] id=[1 diff(a)]==1 ii1=strfind([0 id],[0 1]) ii1(2:end)=ii1(2:en...

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Respondida
How to sort or rearrange a column with respect to the other column?!
Use sortrows function. For example A=[241 5;1245 4;684 4;806 4;674 3] B=sortrows(A,2) % Or by descending order B...

casi 10 años hace | 1

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