已回答
trying to extract the months to create a format looks like 202404, how to do that ?
s = ""; % your string array dt = datetime('now') dt.Format = 'MMM yy'; % the format given in your example code s(1) = dt dt....
trying to extract the months to create a format looks like 202404, how to do that ?
s = ""; % your string array dt = datetime('now') dt.Format = 'MMM yy'; % the format given in your example code s(1) = dt dt....
2 months 前 | 0
已回答
How can I insert a variable into a plot legend, with a special character following the variable?
Using STRING: plot(rand(5,4)) m = pi; legend('','','',"Gradient: "+m+"\circ/mm") Using CHAR: plot(rand(5,4)) m = pi; t = ...
How can I insert a variable into a plot legend, with a special character following the variable?
Using STRING: plot(rand(5,4)) m = pi; legend('','','',"Gradient: "+m+"\circ/mm") Using CHAR: plot(rand(5,4)) m = pi; t = ...
2 months 前 | 0
| 已接受
已回答
I want to index a element of a vector after defining it
"Any correct way to do this?" Yes, but only if you want to make your code complex, awkward, and obfuscated: subsref(factor(56)...
I want to index a element of a vector after defining it
"Any correct way to do this?" Yes, but only if you want to make your code complex, awkward, and obfuscated: subsref(factor(56)...
2 months 前 | 0
| 已接受
已回答
Lineanchor not working in regexp
My guess is that you have not taken the newline characters into account. Note the difference: tx1 = sprintf('Hello\r\nWorld'); ...
Lineanchor not working in regexp
My guess is that you have not taken the newline characters into account. Note the difference: tx1 = sprintf('Hello\r\nWorld'); ...
2 months 前 | 0
已回答
How do I convert a decimal number of months to a datetime format?
"The only way I can think of is manually converting by identifying the length of the month the offset represents." Let MATLAB d...
How do I convert a decimal number of months to a datetime format?
"The only way I can think of is manually converting by identifying the length of the month the offset represents." Let MATLAB d...
2 months 前 | 1
已回答
How can I keep the first two elements from CSV values in a string
S = ["";"philosopher,historian,writer,political activist,literary critic";"philosopher";"philosopher,writer"] T = regexp(S,'^[^...
How can I keep the first two elements from CSV values in a string
S = ["";"philosopher,historian,writer,political activist,literary critic";"philosopher";"philosopher,writer"] T = regexp(S,'^[^...
2 months 前 | 0
| 已接受
已回答
How to compute mean value of a field in a struct?
Rather than nesting lots of separate structures in a cell array, why not just use one structure array?: C = load('featuresnew.m...
How to compute mean value of a field in a struct?
Rather than nesting lots of separate structures in a cell array, why not just use one structure array?: C = load('featuresnew.m...
2 months 前 | 0
| 已接受
已回答
splitting a vector into separate vectors
A much better approach using a cell array: V = [2,2,2,2,2,4,4,4,7,7,8,9] L = diff(find([1,diff(V),1])) C = mat2cell(V,1,L)
splitting a vector into separate vectors
A much better approach using a cell array: V = [2,2,2,2,2,4,4,4,7,7,8,9] L = diff(find([1,diff(V),1])) C = mat2cell(V,1,L)
2 months 前 | 0
| 已接受
已回答
Concatenating Mixed numbers looses the decimal places
"How can I retain the decimal numbers " A = [n,double([MaxI,MinI]),medianMaxIntensity, Hlg,Bren,fwhm2D]; % ^^^^^^^^ ...
Concatenating Mixed numbers looses the decimal places
"How can I retain the decimal numbers " A = [n,double([MaxI,MinI]),medianMaxIntensity, Hlg,Bren,fwhm2D]; % ^^^^^^^^ ...
2 months 前 | 0
| 已接受
已回答
How do I do char2num (assume Ascii)?
https://www.mathworks.com/help/matlab/matlab_prog/unicode-and-ascii-values.html txt = char(120:122) num = double(txt) If you ...
How do I do char2num (assume Ascii)?
https://www.mathworks.com/help/matlab/matlab_prog/unicode-and-ascii-values.html txt = char(120:122) num = double(txt) If you ...
2 months 前 | 0
| 已接受
已回答
writematrix: how to get formatted txt-output?
M = [100,0,4500;0,1,38.29;1,1,38.22] S = join(compose("%10.2f",M),''); writelines(S,"test.txt") Checking: type test.txt
writematrix: how to get formatted txt-output?
M = [100,0,4500;0,1,38.29;1,1,38.22] S = join(compose("%10.2f",M),''); writelines(S,"test.txt") Checking: type test.txt
2 months 前 | 0
已回答
Random number vector with only two values
Indexing is a basic MATLAB superpower. You can easily use indexing to select from a vector of any values: V = [0,pi]; W = V(ra...
Random number vector with only two values
Indexing is a basic MATLAB superpower. You can easily use indexing to select from a vector of any values: V = [0,pi]; W = V(ra...
2 months 前 | 1
| 已接受
已回答
Character string to numeric vector
txt = ' ( 0.0357 -0.0001 0.0051) ' vec = sscanf(txt(3:end),'%f',[1,3]) or vec = sscanf(strtrim(txt),'(%f%f%f',[1,3])
Character string to numeric vector
txt = ' ( 0.0357 -0.0001 0.0051) ' vec = sscanf(txt(3:end),'%f',[1,3]) or vec = sscanf(strtrim(txt),'(%f%f%f',[1,3])
2 months 前 | 0
已回答
how to delete the files in a folder using matlab?
delete(fullfile(inpath,baseGran,'sigma*.img'))
how to delete the files in a folder using matlab?
delete(fullfile(inpath,baseGran,'sigma*.img'))
2 months 前 | 1
已回答
Looping string array into parsed timestamp
"... that is causing issues with the indexing." Because you are mixing up indexing into string arrays with the characters conta...
Looping string array into parsed timestamp
"... that is causing issues with the indexing." Because you are mixing up indexing into string arrays with the characters conta...
2 months 前 | 1
| 已接受
已回答
Combining text with non-zero elements of a 2D array
Without an intermediate matrix: N = [10,0,0,0,0;,0,20,0,0,0;,10,0,20,0,0;,0,0,0,10,0;,0,0,0,0,30] C = {'ABC';'DEF';'GHI';'JKL'...
Combining text with non-zero elements of a 2D array
Without an intermediate matrix: N = [10,0,0,0,0;,0,20,0,0,0;,10,0,20,0,0;,0,0,0,10,0;,0,0,0,0,30] C = {'ABC';'DEF';'GHI';'JKL'...
2 months 前 | 0
| 已接受
已回答
In a table, when I try assigning a value to a new column based on some criteria, I get error that "assignment to elements using simple assignment statement is not supported"
"I don't think I should need a for loop to iterate through each row and replace the value at the "indx" location" You do not ne...
In a table, when I try assigning a value to a new column based on some criteria, I get error that "assignment to elements using simple assignment statement is not supported"
"I don't think I should need a for loop to iterate through each row and replace the value at the "indx" location" You do not ne...
2 months 前 | 0
| 已接受
已回答
How to replace values in a table with the outputs of another code?
Use curly brace indexing to access the content of the table: https://www.mathworks.com/help/matlab/matlab_prog/access-data-in-a...
How to replace values in a table with the outputs of another code?
Use curly brace indexing to access the content of the table: https://www.mathworks.com/help/matlab/matlab_prog/access-data-in-a...
2 months 前 | 0
| 已接受
已回答
Matlab function only giving me 1 output
"why is my Vmax just giving me 1 value." Because you used mrdivide / (matrix right division) instead of rdivide ./ (array right...
Matlab function only giving me 1 output
"why is my Vmax just giving me 1 value." Because you used mrdivide / (matrix right division) instead of rdivide ./ (array right...
2 months 前 | 2
已回答
Customizing plots that are matrices of column vectors?
X = 1:9; Y = rand(9,2); S = scatter(X,Y); set(S,{'Marker'},{'o';'*'})
Customizing plots that are matrices of column vectors?
X = 1:9; Y = rand(9,2); S = scatter(X,Y); set(S,{'Marker'},{'o';'*'})
3 months 前 | 1
已回答
How to use lazy quantifiers in look ahead?
Regular expressions are the wrong tool for this. It might be possible with some effort, but personally I would just use the corr...
How to use lazy quantifiers in look ahead?
Regular expressions are the wrong tool for this. It might be possible with some effort, but personally I would just use the corr...
3 months 前 | 0
| 已接受
已提交
Interactive Regular Expression Tool
Develop and refine regular expressions in an interactive figure that shows all of REGEXP's outputs.
3 months 前 | 10 次下载 |
已回答
Loop through a table using a specific condition and generate new table satisfying the particular condition
ID = ["ID1";"ID1";"ID2";"ID3"]; Value = [5;7;3;1]; T = table(ID,Value) G = groupsummary(T,'ID','sum')
Loop through a table using a specific condition and generate new table satisfying the particular condition
ID = ["ID1";"ID1";"ID2";"ID3"]; Value = [5;7;3;1]; T = table(ID,Value) G = groupsummary(T,'ID','sum')
3 months 前 | 0
已回答
locate within the first column of a matrix a sequence of numbers and extract those rows
Use DIFF, which is a key MATLAB function. M = load('M.mat').M X = diff([0;find(diff([M(:,1);0])<0)]); Y = size(M,2); C = mat...
locate within the first column of a matrix a sequence of numbers and extract those rows
Use DIFF, which is a key MATLAB function. M = load('M.mat').M X = diff([0;find(diff([M(:,1);0])<0)]); Y = size(M,2); C = mat...
3 months 前 | 0
| 已接受
已回答
Rearrange elements of matrix based on an index matrix
Yes, it is awkward. x=randn(5,3) z=randn(5,3) [~,I] = sort(x,2) Perhaps S = size(I); [R,~] = ndgrid(1:S(1),1:S(2)); J = s...
Rearrange elements of matrix based on an index matrix
Yes, it is awkward. x=randn(5,3) z=randn(5,3) [~,I] = sort(x,2) Perhaps S = size(I); [R,~] = ndgrid(1:S(1),1:S(2)); J = s...
3 months 前 | 0
| 已接受
已回答
Is this a bug of MATLAB?
"I think the correct answer should be longer. Is it a bug or an expected behavior?" It is not a bug: the default number of dig...
Is this a bug of MATLAB?
"I think the correct answer should be longer. Is it a bug or an expected behavior?" It is not a bug: the default number of dig...
3 months 前 | 1
| 已接受
已回答
converting string to num and table
Tip for the future: upload your raw data, not a data extract that you have already imported and modified. S = load('sample1.mat...
converting string to num and table
Tip for the future: upload your raw data, not a data extract that you have already imported and modified. S = load('sample1.mat...
3 months 前 | 1
| 已接受
已回答
Faster alternate to all() function
N = 10000; varname = rand(246658,4) idxkeep = randi(size(varname,1),1,N); tic for i=1:N idx = idxkeep(i); idy = ...
Faster alternate to all() function
N = 10000; varname = rand(246658,4) idxkeep = randi(size(varname,1),1,N); tic for i=1:N idx = idxkeep(i); idy = ...
3 months 前 | 1
| 已接受
已回答
Finding mean value over certain amount of values in a matrix
Avoid SQUEEZE. More robust: A = [1,2,3;4,6,8;7,12,7;14,4,23] N = 2; C = size(A,2); B = reshape(mean(reshape(A,N,[],C),1),[],...
Finding mean value over certain amount of values in a matrix
Avoid SQUEEZE. More robust: A = [1,2,3;4,6,8;7,12,7;14,4,23] N = 2; C = size(A,2); B = reshape(mean(reshape(A,N,[],C),1),[],...
3 months 前 | 2
已回答
subdivide numbers inside a file .xlsx
Simpler: C = readcell('file.xlsx'); M = str2double(split(C(6:end),', ')) T = array2table(M, 'VariableNames',split(C(5),', '))...
subdivide numbers inside a file .xlsx
Simpler: C = readcell('file.xlsx'); M = str2double(split(C(6:end),', ')) T = array2table(M, 'VariableNames',split(C(5),', '))...
3 months 前 | 0