Numbers in command window printed 10000 times smaller

Hello,

I have this assignment and I wrote the code for the first paragraph.

The problem now is that the numbers printed in the command window seem to be 10000x smaller than those in the txt file.

I have linked both documents and s snippet from my code.

Thanks

Answer 1

[Star Strider]

I suspect there is an exponent indication out-of-view in the image you posted.

When I read and reshape your file as in your previous Quesion, then display part of it:

format short
MatrixSegment = Dm(:, 1:2000:end)

the result is:

MatrixSegment =

   1.0e+03 *

         0    0.0250    0.0500    0.0750    0.1000    0.1250    0.1500    0.1750
    0.0221    0.5001    0.6421    0.7601    1.0171    1.1331    1.2931    1.4421
    0.8147    0.7449    0.4271    0.2323    0.6791    0.1538    0.5812    0.3430
    0.5000    0.0147    0.2661    0.8725    0.9134    0.3267    0.0030    0.4337

Note the ‘1.0e+3 *’. That is the multiplier for the entire matrix.

EDIT — (26 Oct 2020 at 17:02)

Corrected typographical error.

[Alex Dimko]

If I apply what Walter Roberson said I get the following.

How do I make the Command Window show all the numbers from the beginning?

[Star Strider]

Experiment with various format options. You can then set them just as I did with:

format short

then display the elements you want. You can probably find a format setting that works for you, since I do not know what that is. Click on the link to see the available options.

Also, I believe the reshape arguments you use in your code are incorrect, and will not produce the result you want. If you use the settings I used, and the associated code that I demonstrated (in my Answer to your other Question), you will likely get a usable result.

[Alex Dimko]

I get what I want now.

I somehow manage to do it.

THe only problem is how do I now rearrange the matrix so that the 2, 6, 10, 14,18,.... value is in the second column?

[Alex Dimko]

for example I want 22.08, 315.16,311.24,.. I want all of these numbers to be in the 2nd column

[Star Strider]

‘I get what I want now.’

Perhaps, however what you want is not what you need in order to complete this assignment. I used reshape to get the correct and appropriate vectors, and plotted them, demonstrating that my code (in my Asnwer to your previous Question) worked. Your matrix as you are calculating it will not work to get the result you need. My code produces a (4x14401) matrix. Yopu can easily transpose it to get a 4-column matrix. All you then need to do is to change the subscript references to it.

It is not good to get lost in the formatting issues and get a useless matrix.

[Alex Dimko]

Are you refering to the answer from yesterday? Because I have to keep the original for loop in the code as this is required. I can only change the reshape. Whete is the code where you used reshape?

[Star Strider]

Yes.

You did not post any code with a for loop that I have seen.

Note that in addition to reshape, I use an appropriate for loop with the resulting matrix to do the subplot plots.

[Alex Dimko]

fid = fopen("UE1.txt", "r");

S=fread(fid,inf, "char=>char");
fid = fclose(fid);

data = [];
start = 1;

for index = 1:length(S)
    if S(index) == ","
        new_value = str2double(S(start:index-1));
        data = [data new_value];
        start = index+1;
    end
    
end

data = reshape(data, 4, []);

data = data'
format long g

WORKS!

[Alex Dimko]

I changed the reshape with your reshape and transposed everything.

Now it works.

After 2 days of torture.

Thanks.

[Star Strider]

As always, my pleasure!

If my other Answer worked for you, I would appreciate it if you would Accept it as well!

Answer 2

[Walter Roberson]

My recommendation would be that you go into Preferences -> Command Window -> Text Display, and choose numeric display "long g", and also Preferences -> Variables -> Default array format: and select "long g" (this affects the Variable Browser)

Then give the command

format long g

and display your numbers again.

What you overlooked is that the first line of output said

1e4 *

[Alex Dimko]

This is what I get.

now there are 2 columns, the numbers are aligned weird and I still cannot see the beginning.

But now the numbers are as they should be.

[Alex Dimko]

If I delete format long i get 4 columns