file-io - 在 Matlab 中读取文本

Question

我有一个包含数字和大量文本行的文本文件。但我只需要在 Matlab 中将数字读取为两个单独的矩阵。文件是这样的：

finite element method 
Node Number
1 2 3
1 3 4
2 3 4
coordinates:
10 20
0 20
20 20
14 0

Answer 1

---

fid=fopen('filename.txt'); %opening the file
while ~feof(fid) %reading up to end of the file

tline = fgetl(fid); %reading line by line
if   strcmp(tline, 'Node Number') %finding the line containing " Node Number"
    break    %stop reading if the "Node Number" was detected
end
end

Nnum =transpose( fscanf(fid,'%d ' , [3 Inf])) %reading the lines after the line which we were stop
                                          % reading would stop as soon
                                          % as the format of reading
                                          % doesn't match anymore


while ~feof(fid) %continuing reading line by line again

tline = fgetl(fid);
if   strcmp(tline, 'coordinates:')%stop when the line "coordinates" 
                                  was detected
    break    
end
end

Coordinate =transpose( fscanf(fid,'%d ' , [2 Inf])) %reading lines after line
                                                "coordinate"