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How I can read notbad file Line by Line?

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Ameligege 2015-3-28

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关闭： MATLAB Answer Bot 2021-8-20

I saved matrices in text file line by line and now I want to read these matrices in same way that I saved?

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Geoff Hayes 2015-3-28

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Ameligege - what is the code that you used to save the data to file?

Ameligege 2015-3-28

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dlmwrite('Features.txt',reshapemat,'-append', 'newline', 'pc');

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Image Analyst 2015-3-28

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Try dlmread(), csvread(), importdata(), fgetl(), textscan(), or readtable(). Lots of ways to do it. Examples are in the help. Just pick one or two and give it a try. In the event someone did want to do it for you, you didn't attach your file, so they can't.

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Jan 2015-3-28

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And fscanf.

Image Analyst 2015-3-28

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在 MATLAB Online 中打开

So you used dlmwrite() to write it out

dlmwrite('Features.txt',reshapemat,'-append', 'newline', 'pc');

but dlmread() is not working? What is your code for dlmread()?

Ameligege 2015-3-28

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编辑：Ameligege 2015-3-28

I used dlmread() as follwing

dlmread('Features.txt') but the result is not identical to the text file for example In the notebad file here is one of the values 407.66 but the output is 0.4077 what is the reason?

Image Analyst 2015-3-28

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Well, what can I say if you're not willing to attach your file? Just keep working on it, or call the Mathworks on Monday for help. It looks like somewhere you're dividing the array by 100. Are you sure it's not just being displayed in scientific notation?

Ameligege 2015-3-28

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How can I send it in private way??????

Image Analyst 2015-3-28

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Why does it need to be private? It's just numbers. If there are secret words in some column headers, just change them, and then upload it here.

Ameligege 2015-3-28

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Features.txt

Here is the file .

Image Analyst 2015-3-28

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OK, so the first number in the file is 377. Was that the value in MATLAB before you created the file? And what number do you get after calling dlmread()? 377 or 0.377?

Ameligege 2015-3-28

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编辑：Ameligege 2015-3-28

I extract these values from image,so I can not check the value

when I called dlmread() this what I get 0.3775

Image Analyst 2015-3-28

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在 MATLAB Online 中打开

I can't reproduce:

m = dlmread('features.txt');
m(1, 2)  % Print second number on first row to command line.

In the command window, it shows:

ans =
   377.46

It works just fine for me. There's something you're not showing or telling me, like you're using im2double() or dividing by 100 or something.

Ameligege 2015-3-29

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编辑：Ameligege 2015-3-29

Here are all my steps

1-Read Images

2-Apply Filter function after convert the image using im2double()

3-convert it to black and white

4-Apply DWT

5-Apply kraskuallwallis

6-reshape the result to save it in notbad file row by row

7-write the reult to notbad file

That all what I did before I saved the result in notbad file I can send the code but in private.

Image Analyst 2015-3-29

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在 MATLAB Online 中打开

Right before step 7 (dlmwrite), do this:

save('myarray.mat', 'reshapemat');
dlmwrite('Features.txt',reshapemat,'-append', 'newline', 'pc');

Then attach myarray.mat back here so we can look at it.

Ameligege 2015-3-29

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myarray.mat

Here is

Image Analyst 2015-3-29

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This has totally different numbers than your first example (311 is not the first number anymore) so that means you're also going to have to attach the features.txt file that has the same numbers. Please hurry as I'm planning on leaving for some errands soon.

Ameligege 2015-3-29

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Features.txt

here is

Ameligege 2015-3-29

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how i can display the content of myarray

Ameligege 2015-3-29

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311 is already the first element in the text file

Image Analyst 2015-3-29

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编辑：Image Analyst 2015-3-29

在 MATLAB Online 中打开

Here is the code I used:

s=load('myarray.mat')
m = s.reshapemat;

Then examine m with the variable editor. And you attached the same features.txt as before. It totally does not match your reshapemat in the slightest.

Ameligege 2015-3-29