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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,' ','_'); ...

mehr als 7 Jahre vor | 0

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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...

mehr als 7 Jahre vor | 0

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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...

mehr als 7 Jahre vor | 0

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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...

mehr als 7 Jahre vor | 0

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

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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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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...

mehr als 7 Jahre vor | 0

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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(:)); ...

mehr als 7 Jahre vor | 0

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

mehr als 7 Jahre vor | 0

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

mehr als 7 Jahre vor | 1

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

mehr als 7 Jahre vor | 0

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

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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) ...

mehr als 7 Jahre vor | 0

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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,...

mehr als 7 Jahre vor | 1

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

mehr als 7 Jahre vor | 0

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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);

mehr als 7 Jahre vor | 0

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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),...

fast 8 Jahre vor | 1

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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);

fast 8 Jahre vor | 0

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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...

fast 8 Jahre vor | 0

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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')}; ...

fast 8 Jahre vor | 0

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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...

fast 8 Jahre vor | 0

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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...

fast 8 Jahre vor | 0

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

fast 8 Jahre vor | 1

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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...

fast 8 Jahre vor | 1

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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 ...

fast 8 Jahre vor | 1

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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...

fast 8 Jahre vor | 1

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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...

fast 8 Jahre vor | 0

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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),:);

fast 8 Jahre vor | 2

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