resize and fill table
显示 更早的评论
Hello, How can I resize the table, I mean fill out missing values in column A so that the pattern repeat itself. For example, 0 1 2 3 0 1 2 3.........
And then replace the corresponding rows to these values by NaN in column B and C. After resizind it, the table will have 97 rows it currently has 86 rows.
Thank you!
采纳的回答
Here's one way, using a table:
t = readtable('file.xlsx');
disp(t);
[N,M] = size(t);
ii = 2;
single_row_table = array2table(NaN(1,M),'VariableNames',t.Properties.VariableNames);
while ii <= N
if t{ii,1}-t{ii-1,1} ~= 1 && (t{ii,1} ~= 0 || t{ii-1,1} ~= 3)
single_row_table{1,1} = mod(t{ii-1,1}+1,4);
t = [t(1:ii-1,:); ...
single_row_table; ...
t(ii:end,:)];
N = N+1;
end
ii = ii+1;
end
disp(t);
Here's the same method, but using a matrix:
m = readmatrix('file.xlsx');
disp(m);
[N,M] = size(m);
ii = 2;
while ii <= N
if m(ii,1)-m(ii-1,1) ~= 1 && (m(ii,1) ~= 0 || m(ii-1,1) ~= 3)
m = [m(1:ii-1,:); ...
mod(m(ii-1,1)+1,4) NaN(1,M-1); ...
m(ii:end,:)];
N = N+1;
end
ii = ii+1;
end
disp(m);
4 个评论
Sanley Guerrier
2023-7-17
Voss
2023-7-17
You can use a table or a matrix, whichever is more convenient. I showed both ways since I wasn't sure which is more convenient for you.
Sanley Guerrier
2023-7-17
Voss
2023-7-17
You're welcome!
更多回答（1 个）
Does this work for you?
data = readmatrix('file.xlsx');
% Note: sometimes 0's are missing from colum 1 for some reason.
% Is this the way it's supposed to be???
[rows, columns] = size(data)
finalRow = 97;
data(end : finalRow, 2:3) = nan;
% Fill up tail of column 1 with 0;1;2;3;0;1;2;3; etc.
for row = rows+1 : finalRow
data(row, 1) = mod(row+2, 4);
end
% Optional: Convert from array to table
t = table(data(:, 1), data(:, 2), data(:, 3), 'VariableNames', {'QHR', 'A', 'B'})
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