Problem with reading text file and making changes

2018 1 2
2 个回答
回答已采纳
更新时间：2018 1 3
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0 个投票

I have a file in a txt format with the following data
0 584547.75 4052042.76
1 584543.25 4052030.13
2 584542.06 4052009.10
3 584556.55 4052005.46
4 584565.18 4052000.66
5 584576.33 4051992.03
6 584594.05 4051981.91
7 584599.05 4051986.77
8 584609.27 4052003.61
9 584604.24 4052007.05
10 584603.98 4052020.41
11 584602.32 4052021.53
12 584605.89 4052029.20
13 584601.43 4052036.84
14 584597.00 4052041.34
15 584584.83 4052048.62
16 584576.23 4052056.49
17 584569.15 4052051.59
18 584555.92 4052047.8
I want to know through which commands, it can be openned, so as to abolish the first row and so as for a comma to be put between the second and the third column. I started with the following code:
fileID = fopen(C:\Users\GB\Desktop\topo);
c = textscan(fileID,'%f %f %f')

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GEORGIOS BEKAS
GEORGIOS BEKAS 2018-1-3

0 个投票

I have found the answer:
M = dlmread('C:\Users\G\Desktop\topo.txt',' '); %replace path as appropriate
M(:,1) = []
dlmwrite('C:\Users\G\Desktop\myfile.txt',M,',')

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Guillaume
Guillaume 2018-1-3
编辑：Guillaume 2018-1-3
"I have found the answer"
... to a different question than you asked. The above will put a comma between all the columns not just "between the second and the third column" as you asked.

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Guillaume
Guillaume 2018-1-2

0 个投票

If I understood correctly:
filecontent = fileread('C:\somewhere\somefile.txt'); %replace path as appropriate
filecontent = regexprep(filecontent, '.*[\n\r]+', '', 'once', 'dotexceptnewline'); %remove first line
filecontent = regexprep(filecontent, '(\s+)([0-9.]+\r?)$', ',$2', 'lineanchors'); %replace whitespaces by , before last column
fid = fopen('C:\somewhere\newfile.txt', 'w'); %replace path as appropriate
assert(fid > 0, 'failed to open file for writing');
fwrite(fid, filecontent);
fclose(fid);

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