problem from reading data from a .txt file

2012 10 31
1 个回答
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Hello I have 20000 data located in a .txt file.this data genarated by randi function of matlab..
my notepad is looks like this
Columns 1 through 20
160 7 121 126 83 106 41 6 183 132 68 105 42 62 194 214 122 73 194 187
Columns 21 through 40
16 253 10 199 249 106 79 154 34 46 116 83 122 11 6 .......more
now I need to read data from this .txt.. my code is
fid = fopen('D:\data_1.txt');
A = fscanf(fid, '%g', [2 inf]);
fclose(fid);
X=reshape(A,20000,1);
but I am getting error on RESHAPE function...it says "To RESHAPE the number of elements must not change."
in workspace A is blank..whats going wrong?

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回答（1 个）

Jing
Jing 2012-10-31

0 个投票

Hi,
Can you try to use the default setting of FSCANF function?
Like A=fscanf(fid,'%g');

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tusu
tusu 2012-10-31
No that also gives error...How to read data from a file when the data in the notepad are 1*20000 double format?
Sachin Ganjare
Sachin Ganjare 2012-10-31
A = fscanf(fid, '%g', [2 inf]);
This is wrong.For this to work your data should have been in below format:
Columns 1 through 20000
160 7 121 126 83 106 41 6 183 132 68 105 42 62 194 214 122 73 194 187........100(20000th element)
tusu
tusu 2012-10-31
Yup I think so....what to do now which command should I use...the problem is creating "Columns 1 through 20" and so on...any suggestion?
tusu
tusu 2012-10-31
any suggestions for reading data from following files

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tusu
tusu
2012-10-31

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