Making a nice and small 'Loding Data' Script

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Wenzel Gaßner 2020-4-10

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https://ww2.mathworks.cn/matlabcentral/answers/516843-making-a-nice-and-small-loding-data-script

评论： Rik 2020-4-12

采纳的回答： Rik

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Hey,

I am currently trying to write a script that should be at the beginning of a larger one.

The user would run the script and be asked by the program:

-Where is the file ?

-Filename?

-other (for later)?

The script should then load the requested file into Matlab. It is measurement data in a .txt file.

I searched a lot and tried it like this:

But it doesn't work as hoped

box = msgbox('Hello,  blablabla');
%set(box, 'position', [500 500 200 100]);
pause(1.2)
Folder = uigetdir();
Folder_string=string(Folder);
prompt = {'Filename:','other:'};
dlgtitle = 'blablabla';
%size of the window             
width = 75;             
height = 1;
dims = [height, width];
definput = {'Filename','other'};
answer = inputdlg(prompt,dlgtitle,dims,definput);
Dataname=string(answer(1,1));
other=string(answer(2,1));
%% Import
% Use Var: 'Dataname' and 'Folder' for Import:
Data = load(fullfile(Folder_string,Dataname));

After choosing the path an the filename an error appears. :(

"Error using load Number of columns on line 3 of ASCII f

ile C: \ bla \ bla \ bla \ bla \ bla \ filename must be the same as previous lines.

Error in dialog (line 45) Data = load (fullfile (Folder_s, Dataname));"

Now i dont know what to do......

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Rik 2020-4-10

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That looks like a very strange file. It looks like 3 files were merged.

You can select the lines you're interested in like this:

file_contents=fileread('SBA15_Data.txt.txt');
file_contents=strsplit(file_contents,'\n');
file_contents=file_contents(6:605);

Then you only need to parse them to numeric values.

Wenzel Gaßner 2020-4-10

Thank you I'll try it like this tomorrow!

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采纳的回答

Rik 2020-4-11

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/516843-making-a-nice-and-small-loding-data-script#answer_425331

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The code below should read your file and convert it to a double array.

file_contents=fileread('SBA15_Data.txt.txt');
file_contents=strsplit(file_contents,'\n');
file_contents=file_contents(6:605);
parse_val=@(str) cellfun(@str2double,strsplit(strtrim(str),' '));
x=reshape(file_contents,[],1);
x=cellfun(parse_val,x,'UniformOutput',false);
x=cell2mat(x);