Respondida
How to Import excel document with alot of sheets that does not ignore date in first column
fn = 'Path_to_your_file\MachineLearning.xlsx'; [~,sheet_name] = xlsfinfo(fn); sheet_name = strrep(sheet_name,' ','_'); ...

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Respondida
what should be the program for following output?
>> a0 = {'Sr_no' 'Threshold' 'TP' 'TN' 'FP' 'FN' 'FAR' 'FRR' 'GAR'}; a=[1 0 0 100 0 100 0 1 0 2 0.1 19 100 0 81 0 0.81 1...

más de 7 años hace | 0

Respondida
how can i apply 1 of k coding scheme on 2D MATRIX
C = randi([1,3],2,4) [m,n] = size(C); k = max(C(:)); out = zeros(n,k,m); [ii,kk] = ndgrid(1:m,1:n); out(sub...

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Respondida
Finding neighbours in a matrix
Let |a| - your double array. m = size(a)+2; b = nan(m); b(2:end-1,2:end-1) = a; iii = reshape(1:numel(b),m); ii...

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Respondida
Convert cell array to two row vector
cell2mat(hvix(:)')

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Respondida
sum of consecutive months value in an array
a = [1988 6 223.12 1994 7 1033.0 1994 8 464.67 1995 9 251.33 1997 6 121.41 1997 8 624.58 1999 9 221.60 20...

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Respondida
table name res5500 ,row size 762,three column, third column each row have different length,compare the value of each row is same or different. count number of same row and different row, please help me
f = fopen('path_to_file\res_5500.csv'); c = textscan(f,'%s','delimiter','\n'); fclose(f); n = cellfun(@numel,re...

más de 7 años hace | 0

Respondida
How do I create a loop to increment the number of terms of a function?
m = @(x)1+a(:).'*(x - b(:)) use >> a = [1 2 3 4 5]; b = [6 7 8 9 10]; m = @(x)1+a(:).'*(x - b(:)); ...

más de 7 años hace | 0

Respondida
why do I need to add eps ?
To avoid the uncertainty of |"0/0"| situation when calculating |z|. When |x = 0| and |y = 0|.

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Respondida
array indexing with repeated index, index size larger than the array
One way: A = {'a' 'b' 'c' 'd'}; I = [1 1 3 1 1 1 2 2 1]; B = A(I);

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Respondida
How do I solve the error "Improper assignment with rectangular empty matrix" caused by an error in the find command?
[~,C] = ismember(A,B);

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Respondida
What is wrong with this code?
for ii = 1:8760 if v(ii)<vci || v(ii)>vco P(ii)=0; elseif vci<=v(ii) && v(ii)<vr P(ii)=(0....

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Respondida
How do convert array x to array z?
or just: [~,~,z] = unique(x,'stable'); or more [~,z] = ismember(x,[4 8 5]);

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Respondida
how to reverse an integer
flip(sprintf('%d',4530),2)

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Respondida
how to take a matrix of certain values taken from the matrix
q = 125; [~,inx] = mink(abs(A(:,2) - q),2); B = A(inx,:); or for old MATLAB q = 125; [~,inx] = sort(abs(A(:,2) ...

más de 7 años hace | 0

Respondida
Get the max value and the indices of max value across a series of matrices
Let A - your cell array (25 x 50) with double matrix 128 x 128. n = size(A,1); maxvalue = cell(n,1); maxidx = cell(n,...

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Respondida
how to have a vector that counts how many repetitive numbers there is in another vector?
out = [(1:51)',histcounts(A,1:52)']

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Respondida
how can i create 12 monthly maxima from a uniform distribution between 0 and 6? (using unifrnd)
R = unifrnd(a,b(end),[1,12]); or R = rand(1,12)*b(end);

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Respondida
Collapsing data that are within one integer value of each other
n = diff(z(:)) == 1; lo = [n;0] | [0;n]; nn = [diff([0;n]) == 1;0]; nn(~lo) = 1; out = ceil(accumarray(cumsum(nn),...

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Respondida
How to merge adjacent NaN values into single NaN value in a vector?
a = [1 2 3 NaN NaN 0 1 2 NaN 9 8 7 6 NaN NaN NaN 1 1]; lo = ~isnan(a); lo(strfind(lo,[0 1])) = true; out = a(lo);

más de 7 años hace | 0

Respondida
Sir, am having the four mat files, which of two contains features from minutie and other two contains feature from invarient moment, can i make fusion of those features by combining it then how?
V = {load('db1.mat'),load('db2.mat'),load('db3.mat'),load('db4.mat')}; n = cellfun(@fieldnames,V,'un',0); V1 = cellfun...

más de 7 años hace | 0

Respondida
Error in following code while converting cell to matrix
fusion = cell2mat(cat(1,out{:})); or just V = {load('db1.mat'),load('db2.mat'),load('db3.mat'),load('db4.mat')}; ...

más de 7 años hace | 0

Respondida
How to create matrix from descending number of vector elements without loop?
A = [1 2 5 3 4]; n = numel(A); out = ones(n,1)*A.*flip(triu(ones(n)),2); or just ( |MATLAB >= R2016b|) out = A...

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Respondida
How can I select rows based on the value in a specific column and calculate the mean of those rows for all other columns to create a new table containing just the means?
TT = table2timetable(Port1a(:,2:end),'RowTime',datetime(Port1a{:,1})); out = varfun(@mean,TT(:,[1:20,end]),'GroupingVariabl...

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Respondida
Converting a 3D matrix into a 2D in the correct order.
permute(T,[3,2,1])

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Respondida
find data in array
i1 = find(header(:)==53); p = hankel(header(1:end-1),header(end-1:end)); i2 = find(ismember(p,[53*ones(4,1),(0:3)'],'row...

casi 8 años hace | 1

Respondida
Import excel sheet, multiply each column with a variable, and save the results as a new cell array
>> d d = 1 1 1 2 2 2 3 3 3 1 1 1 2 2 2 3 3 ...

casi 8 años hace | 1

Respondida
How to find the neighbors of each element in a matrix
s = size(A); B = zeros(s); n = numel(A); out = cell(s); for ii = 1:n B(ii) = 1; out{ii} = A(bwdist(B,'ch...

casi 8 años hace | 1

Respondida
How to Convert milliseconds to dd:mm:yyyy hh:mm:ss?
T = datetime(1970,1,1,0,0,0,0,'TimeZone','UTC','F','uuuu-MM-dd''T''HH:mm:ss.SSS Z'); addMS = milliseconds(cumsum([0;randi(2...

casi 8 años hace | 0

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Respondida
How to remove duplicate rows from a matrix?
[~,b,c] = unique(Results(:,1:5),'rows','stable'); out = Results(b(histcounts(c,1:numel(b)+1) == 1),:);

casi 8 años hace | 2

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