How can I solve the eror " Error using textscan Invalid file identifier. Use fopen to generate a valid file identifier. " for this code ?

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javad amoli 2018-2-4

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https://ww2.mathworks.cn/matlabcentral/answers/380682-how-can-i-solve-the-eror-error-using-textscan-invalid-file-identifier-use-fopen-to-generate-a-va

评论： Clément Carré 2022-3-10

function [load_time_stamp, load_value]=get_the_actual_demand_data()

filename = 'dee1.csv'; delimiter = ','; startRow = 2;

formatSpec = '%s%*s%[^\n\r]'; fileID = fopen(filename,'r');

dataArray = textscan(fileID, formatSpec, 'Delimiter', delimiter, 'HeaderLines' ,startRow-1);

%dataArray = textscan(fileID, formatSpec, 'Delimiter', delimiter, 'TextType', 'string', 'EmptyValue', NaN, 'HeaderLines' ,startRow-1, 'ReturnOnError', false, 'EndOfLine', '\r\n');

load_time_stamp = dataArray{:, 1};

fclose(fileID);

formatSpec = '%*s%f%[^\n\r]'; fileID = fopen(filename,'r');

dataArray = textscan(fileID, formatSpec, 'Delimiter', delimiter, 'HeaderLines' ,startRow-1);

%dataArray = textscan(fileID, formatSpec, 'Delimiter', delimiter, 'TextType', 'string', 'EmptyValue', NaN, 'HeaderLines' ,startRow-1, 'ReturnOnError', false, 'EndOfLine', '\r\n');

load_value = dataArray{:, 1};

fclose(fileID);

end