As far as I can understand, you need to just replace the values under the Res[f(p)] column (wherever it appears) with the corresponding value multiplied by 1.1, right?
This can be achieved through the following steps:
- Define the input and output file paths
- Define the row ranges to extract
- Define a function, modify_row, that will extract and modify the appropriate value from a given row
- Open the input file for reading
- Read the data from the input file into a cell array
- For each row range, extract and modify the appropriate value for each row in that range
- Replace the original value in each row with the modified value
- Open the output file for writing
- Write the modified data to the output file
- Close both files
The following script performs the above steps:
% Define the input and output file paths
input_file = 'Res.txt';
output_file = 'OutputRes.txt';
% Define the row ranges to extract
row_ranges = {[46, 60], [68, 82], [141, 155], [163, 177], [236, 250], [258, 272]};
% Open the input file for reading
fid_in = fopen(input_file, 'r');
% Read the data from the input file into a cell array
data = textscan(fid_in, '%s', 'Delimiter', '\n');
data = data{1};
% Extract and modify the appropriate value for each row in the specified range
for range_index = 1:length(row_ranges)
% Get the current row range
start_index = row_ranges{range_index}(1);
end_index = row_ranges{range_index}(2);
% Iterate through the each row in the range
for row_index = start_index:end_index
% Extract the appropriate value from the row and modify it
current_row = data{row_index};
value_to_modify = modify_row(current_row);
modified_value = sprintf('%.5E', value_to_modify);
% Replace the original value in the row with the modified value
row_data = strsplit(current_row, ' ');
row_data{4} = modified_value;
modified_row = strjoin(row_data, ' ');
data{row_index} = modified_row;
end
end
% Open the output file for writing
fid_out = fopen(output_file, 'w');
% Write the modified data to the output file
for row_index = 1:length(data)
fprintf(fid_out, '%s\n', data{row_index});
end
% Close both files
fclose(fid_in);
fclose(fid_out);
% Define a function to extract and modify the appropriate value from a given row
function modified_value = modify_row(row)
% Split the row into its whitespace-separated values
row_values = strsplit(row);
% Get the 4th value from the row (corresponding to the "Res[f(p)]" column) and convert it to a double
value_string = row_values{4};
value_double = str2double(value_string);
% Multiply the value by 1.1 and return the result
modified_value = value_double * 1.1;
end
The modify_row function extracts the 4th value from a row (which corresponds to the value under the Res[f(p)] column) and multiplies it by 1.1. It parses the space-separated values in the input row, retrieves its 4th value, converts it to a number (double), and multiplies it by a factor of 1.1. The output modified_value is a scalar double.
