this is my question,I write a txt named "data", when I load this data.txt,the programme is wrong..my programme and result show below,What should I do?

code: load data.txt >>??? Error using ==> load Number of columns on line 2 of ASCII file C:\Users\Administrator\Desktop\data.txt must be the same as previous lines.

[huang gangfeng]

my data.txt document is below:

313  2,143  265  2,277
216  965  224  949
196  1,195  176  1,356
190  1,021  174  1,263
171  958  162  905
149  1,259  142  1,517
107  696  109  680
93  1,086  105  1,116
79  627  69  588
72  1,336  66  1,566
70  1,680  61  1,657
56  1,203  52  1,085
52  1,119  51  1,044
51  1,066  46  641
50  1,249  42  338
48  695  39  1,099
48  616  35  657

[Star Strider]

The data are helpful, but we need to see the code you used to write the file.

Did you use the save function?

[huang gangfeng]

I write the code in the command windows.I didn't save function.the code is "load data.txt",then input ‘enter’,unfortunately,the result is wrong

Answer 1

[Stephen23]

The commas in your data file are the problem. Commas are used in many languages as the decimal radix (as opposed to the decimal point used in English), but are used in written English to separate digits groups in increments of 1000.

In either case these commas are not accepted by MATLAB's standard file parsing tools. You can either:

• remove the commas from your file before reading it with a standard MATLAB function.
• write your own file parsing function in MATLAB.

When I removed all of the commas from your file it loaded without error:

>> A = load('data.txt')
A =
    313   2143    265   2277
    216    965    224    949
    196   1195    176   1356
    190   1021    174   1263
    171    958    162    905
    149   1259    142   1517
    107    696    109    680
     93   1086    105   1116
     79    627     69    588
     72   1336     66   1566
     70   1680     61   1657
     56   1203     52   1085
     52   1119     51   1044
     51   1066     46    641
     50   1249     42    338
     48    695     39   1099
     48    616     35    657

[huang gangfeng]

thanks...but I want to know if there is a function that can remove all the commas once,because I have a similar data.txt document which have many numbers that have commas,if I remove these commas one by one by hand,It will waste much time

[Stephen23]

This is a basic feature of every text-editor. It is commonly called "Find and Replace". You can use it to locate text in a text file and replace it with some other text. It is very easy to use. Open the file in your favorite text-editor (it could be MATLAB!), press "ctrl" + "F", then search for ',' and replace all instances with ''. It will take you less time to do this than it takes you to read this comment.

Answer 2

[Walter Roberson]

textscan(strrep(fileread('new_data.txt') ',', ''), '%f%f%f%f')