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Read Excel and write output

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MINATI PATRA
MINATI PATRA 2024-1-13
评论： MINATI PATRA 2024-1-15
Ran in:
R = xlsread('Book1.xlsx') %% Excel sheet (Book1.xlsx) is in 'D' drive
R = 20×3
0.0100 0.0100 0.0100 0.0300 0.0100 0.0100 0.0100 0.0300 0.0100 0.0300 0.0300 0.0100 0.0100 0.0100 0.0300 0.0300 0.0100 0.0300 0.0100 0.0300 0.0300 0.0300 0.0300 0.0300 0.0100 0.0200 0.0200 0.0300 0.0200 0.0200
A = 1; B = 2; C = 3;
Nu = A*p1 + B*p2 + C*p3;
Unrecognized function or variable 'p1'.
I want Matlab to read Excel sheet, columns C, D, and E, then calculate Nu (column F) by the above formula and write the respective values in column F in that excel sheet automatically.

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采纳的回答

Voss
Voss 2024-1-13
Ran in:
filename = 'Book1.xlsx'; % path to your file, e.g., 'D:\PK79\Book1.xlsx'
% read the file to a table:
T = readtable(filename)
T = 20×4 table
p1 p2 p3 NU ____ ____ ____ ___ 0.01 0.01 0.01 NaN 0.03 0.01 0.01 NaN 0.01 0.03 0.01 NaN 0.03 0.03 0.01 NaN 0.01 0.01 0.03 NaN 0.03 0.01 0.03 NaN 0.01 0.03 0.03 NaN 0.03 0.03 0.03 NaN 0.01 0.02 0.02 NaN 0.03 0.02 0.02 NaN 0.02 0.01 0.02 NaN 0.02 0.03 0.02 NaN 0.02 0.02 0.01 NaN 0.02 0.02 0.03 NaN 0.02 0.02 0.02 NaN 0.02 0.02 0.02 NaN
% update the NU column:
A = 1; B = 2; C = 3;
T.NU = A*T.p1 + B*T.p2 + C*T.p3
T = 20×4 table
p1 p2 p3 NU ____ ____ ____ ____ 0.01 0.01 0.01 0.06 0.03 0.01 0.01 0.08 0.01 0.03 0.01 0.1 0.03 0.03 0.01 0.12 0.01 0.01 0.03 0.12 0.03 0.01 0.03 0.14 0.01 0.03 0.03 0.16 0.03 0.03 0.03 0.18 0.01 0.02 0.02 0.11 0.03 0.02 0.02 0.13 0.02 0.01 0.02 0.1 0.02 0.03 0.02 0.14 0.02 0.02 0.01 0.09 0.02 0.02 0.03 0.15 0.02 0.02 0.02 0.12 0.02 0.02 0.02 0.12
% write the table back out to file:
writetable(T,filename,'WriteMode','overwritesheet')
% check the result:
T = readtable(filename)
T = 20×4 table
p1 p2 p3 NU ____ ____ ____ ____ 0.01 0.01 0.01 0.06 0.03 0.01 0.01 0.08 0.01 0.03 0.01 0.1 0.03 0.03 0.01 0.12 0.01 0.01 0.03 0.12 0.03 0.01 0.03 0.14 0.01 0.03 0.03 0.16 0.03 0.03 0.03 0.18 0.01 0.02 0.02 0.11 0.03 0.02 0.02 0.13 0.02 0.01 0.02 0.1 0.02 0.03 0.02 0.14 0.02 0.02 0.01 0.09 0.02 0.02 0.03 0.15 0.02 0.02 0.02 0.12 0.02 0.02 0.02 0.12
  1 个评论
MINATI PATRA
MINATI PATRA 2024-1-14
Dear Voss
A Salute to your ideas, it worked for me. It is actually a sample of my original work. I applied your technique with bvp5C code but unable. Please have a look into the link of same type work.
https://in.mathworks.com/matlabcentral/answers/2069731-read-excel-and-write-the-output-in-same-sheet-in-three-columns

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更多回答（1 个）

Image Analyst
Image Analyst 2024-1-13
What is p1, p2, and p3? You might try
R = xlsread('Book1.xlsx') %% Excel sheet (Book1.xlsx) is in 'D' drive
A = R(:, 1);
B = R(:, 2);
C = R(:, 3);
Nu = A*p1 + B*p2 + C*p3;
  3 个评论
显示 1更早的评论
Image Analyst
Image Analyst 2024-1-14
You accepted Voss's answer so I guess you got it all figured out now.

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