matlab reads the.geo file

Question

Chenglin Li 2022-12-17

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1880082-matlab-reads-the-geo-file

回答： Voss 2022-12-18

rec.txt

Hello!I have a.geo file, I want to extract all the information in it in matlab, all the Point, Line, Line Loop, Plane Surface, how can I extract the following data according to its string in matlab and convert it into a matrix。

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KSSV 2022-12-17

What is attached .txt file? Where is .geo file?

Chenglin Li 2022-12-17

The.geo file cannot be uploaded, but it has the same content as the.geo file.

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Answer 1

Voss 2022-12-18

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1880082-matlab-reads-the-geo-file#answer_1130887

在 MATLAB Online 中打开

rec.txt

Here's one way:

fid = fopen('rec.txt','r');
text = fread(fid,'*char').';
fclose(fid);
data = regexp(text,'([\w ]+)\((\d+)\) = {(.+?)}','tokens');
data = vertcat(data{:});
data(:,1) = strrep(data(:,1),' ','_');
data(:,[2 3]) = cellfun(@str2num,data(:,[2 3]),'UniformOutput',false);
args = unique(data(:,1)).';
args(end+1,:) = {[]};
result = struct(args{:});
for ii = 1:size(data,1)
    result.(data{ii,1}) = subsasgn( ...
        result.(data{ii,1}), ...
        substruct('()',{data{ii,2},':'}), ...
        data{ii,3});
end
result
result = struct with fields:
             Line: [13×2 double]
        Line_Loop: [6×4 double]
    Plane_Surface: [6×1 double]
            Point: [9×4 double]
     Surface_Loop: [1 2 4 5 3 6]
           Volume: 1
result.Point
ans = 9×4
     0     0     0     1
     0     0     0     1
     4     0     0     1
     4     4     0     1
     0     4     0     1
     0     0     1     1
     4     0     1     1
     4     4     1     1
     0     4     1     1
result.Line
ans = 13×2
     5     1
     1     3
     3     4
     4     5
     5     9
     9     6
     6     7
     7     7
     7     8
     8     9
result.Line_Loop
ans = 6×4
    10     6     7     9
    10    -5    -4   -13
     9    13    -3   -12
     5     6    11    -1
     7    12    -2   -11
     4     1     2     3
result.Plane_Surface
ans = 6×1
     1
     2
     3
     4
     5
     6