Printing output result given different input

Question

Chiara Lanzi 2023-7-27

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https://ww2.mathworks.cn/matlabcentral/answers/2001582-printing-output-result-given-different-input

回答： Chiara Lanzi 2023-8-1

Hello everyone,

I am trying to print in txt files the outputs calculate from a code which is simulating an inversion.

I managed to print the output (let's called it model) if I include only one input variable by using the dlmwrite function (dlmwrite('Model.txt', [model ],'Delimiter',' ','precision','%.4f'))).

The code allows to run the inversion with more than one input variable so the variable named model has two results; it calculates the results considering the input file 1 and the input file 2 at the same time. At this point, I would like to print in two separate files the outputs from the two input variables. If I used the dlmwrite funtion as I wrote before I got only one result (the second variable result) but not both.

Do you have some suggestion to how use the dlmwrite function to print both?

Chiara

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Answer 1

Walter Roberson 2023-7-27

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dlmwrite can only write to one file in any given call.

dlmwrite('Model_1.txt', First_Variable, 'Delimiter', ' ', 'precision', '%.4f')
dlmwrite('Model_2.txt', Second_Variable, 'Delimiter', ' ', 'precision', '%.4f')

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Walter Roberson 2023-7-28

There is no such thing as an if loop.

If executes a section of code 0 or 1 times

for executes a section of code a pre-determined number of times (unless ended prematurely)

while executes a section of code an undetermined number of times, until conditions change or ended prematurely.

Walter Roberson 2023-7-28

在 MATLAB Online 中打开

I suspect the answer you are looking for is:

filename = sprintf('Model_%d.txt', LOOP_COUNTER_VARIABLE_GOES_HERE);
dlmwrite(filename, DATA_VARIABLE_NAME_GOES_HERE, 'Delimiter', ' ', 'precision', '%.4f');