Answered
How to do calculation on time values imported from Excel?
If a is your array a=[0.8153 ,0.2944,0.4792,0.8208,0.2917] out=datestr(a,'HH:MM:SS')

10 years ago | 0

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add colums in a cell array of strings
s={'674' '719' '618' '631' '618' '631' '618' '631' '618' '674'} out=repmat({''},1,19) out(1:numel(s))=s

10 years ago | 0

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index must be a positive integer or logical
when you write p(i), make sure that i is a positive integer, not equal to 0. in your case, you have p(i-1), if i is equal to 1,...

10 years ago | 0

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how to add disturbance factor ?
* Use these a <http://www.mathworks.com/help/simulink/slref/clock.html clock block> to generate a time t, * multiply the time ...

10 years ago | 1

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Substitute numbers in array
X=[1 2 3 4 5 6 7 8] XX=[fliplr(X(1:4)) fliplr(X(5:end))]

10 years ago | 0

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how to change decimal places after point
v={'data_70.000_32.125';'data_70.124_32.120';'data_74.120_32.123'} w=cell(size(v)) for k=1:numel(v) a=regexp(v{k},'_','...

10 years ago | 0

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Answered
Matlab confirm is input is not an array
n = input('Enter in a positive integer: ') while n<0 | numel(n)>1 | fix(n)~=n n = input('Enter in a positive integer: ')...

10 years ago | 0

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Answered
Sorting elements of a matrix ignoring NaN
have = [5 NaN 4 9; 4 0 NaN 9; -6 NaN 2 3; 1 7 NaN -3] idx=isnan(have) [n,m]=siz...

10 years ago | 0

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Answered
How to multiply the constants of a symbolic vector?
r = 2 p = sym('p', [1 r]) syms k a =prod(p)

10 years ago | 0

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Answered
How can I combine data from multiple cells into one matrix?
A={rand(4,23) rand(5,23) rand(10,23)} B=cell2mat(A')

10 years ago | 0

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Answered
Plot window is coming up blank. Why?
t = 0:0.01:10; vs = 3.*exp(-t /3).*sin(pi*t); vl=vs; vl(vs<=0)=0; plot(t,vl)

10 years ago | 0

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Answered
Matrix dimension must agree
There are many mistakes in your code fc=[10 30]; the size of fc is [1 2], then fc(i,:) is not defined for i=2. also ...

10 years ago | 0

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Split 3d array into 'i' equal mat files
v=rand(4,6,8) for ii= 1:6 filename=sprintf('my_data%d.mat',ii); s=v(:,ii,:) save(filename,'s'); end

10 years ago | 0

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How to delete repeated elements in column
D={'Run' '' 'play' ''; '' 'go' '' 'sit' ; 'Run' '' 'play' ''; '' 'go' ''...

10 years ago | 0

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Answered
Can any one help me to correct this code
function h=dd1(n) h=zeros(1, length(n)); % n = [1 2 3 4 5 6 7]; % What this line is doing here? h(n==0) = 1; The call ...

10 years ago | 0

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Answered
Compare two strings, in different length, in two data sets in MATLAB, using if loop.
v={'ct' 12;'er' 14 ;'ct' 20 ; 'gf' 45 ;'ct' 78 ; 'er' 47} [ii,jj,kk]=unique(v(:,1)) out=[ii accumarray(kk,(1:numel(kk))',[]...

10 years ago | 0

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Hi friends.I have a problem.There is error that is index must be integer or logical.
You can't write y(0), Matlab does not allow index equal to zero. the index should be positive integer

10 years ago | 0

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Answered
Read a txt file with engineering format
What kind of trouble? try this filename = 'Source.txt'; format long [B,delimiterOut]=importdata(filename);

10 years ago | 0

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Answered
All Possible combinations of rows
[ii,jj]=meshgrid((1:s1),(1:s2)); v=[ jj(:) ii(:) ones(s1*s2,1)]';

10 years ago | 0

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Merging text files into one
s=[ 'copy ' sprintf('0906%d.txt+',15:22)] s(end)=[] system(s)

10 years ago | 0

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Why I get this Error (State Space)?
Your diagram doesn't match your equation, you should have B*[dxr;xr]

10 years ago | 0

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Answered
Filter the rows of a matrix based on the values of one column
idx=ismamber(A(:,1),B) C=A(idx,:)

10 years ago | 0

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Answered
How I can write this in MATLAB ?
n=1:20 x=3*(-1/4).^n stem(n,x)

10 years ago | 0

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Answered
what is the problem with this code ?!!
syms n z a = ztrans(3*(-1/4)^n); b=subs(a,1:20) subplot(2,1,1) stem(b)

10 years ago | 0

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Answered
Why Ramp block output is continuous even when a discrete solver is chosen?
You can choose how your scope displays your plot. change the parameters of your scope, in "style,line": choose "no line".

10 years ago | 0

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xlsread returns empty when reading a cell with a formula
[num,text,both] = xlsread('h&vlookup_if_and_or_Capacity_Planning.xlsx','Sheet1','B26','basic')

10 years ago | 0

Answered
Reading a *.txt document and extracting specific words/phrases
filetoread ='yourfile.txt'; fid = fopen(filetoread) k=1; v=cell(1,1) while 1 tline = fgetl(fid); ...

10 years ago | 0

Answered
removing zeros from matrix
v=[0 0 2 3 4 0; 1 0 2 0 0 1; 3 2 1 0 0 0; 0 1 0 3 0 1] out=reshape(v(v~=0),size(v,1),[])

10 years ago | 1

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How to delete an element of a vector?
v=[1 10 3 4 10] w=v(v~=10) %or v(v==10)=[]

10 years ago | 1

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Answered
Covert a cell to multidimensional matrix
%------------Example--------------------------- s=arrayfun(@(x) randi(5,randi(5),100),1:5,'un',0) %---------------the code--...

10 years ago | 0

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