bytes of double may be aren't sufficient!

200201382 is getting converted to 200200000 as it is received by matlab as 2.002e+08. I need it to be as 200201382 itself an need matlab to input it as 200201382. How can I do this? Thank you in advance.

[Stephen23]

Given that numbers of class double have atleast 15 digits of precision, it is much more likely that you just need to read about the format command:

http://matlab.wikia.com/wiki/FAQ#Does_MATLAB_only_calculate_to_4_significant_digits.3F

Answer 1

[John D'Errico]

I think you need to learn about the format command. That it is DISPLAYED on the command line as such is not relevant.

The range of a double is entirely adequate for that number. It is stored properly. You simply don't know that it is.

help format

format long g

A common problem is when you have many numbers of different magnitudes in a vector or array. Then MATLAB will choose to use a scientific notation for the display, with limited number of digits displayed.

v = [.0001;200201382]
v =
   1.0000e-04
   2.0020e+08

As you can see, it LOOKS like the second element of v was not stored properly. However, MATLAB knows what it is.

v(2)
ans =
   200201382

Answer 2

[Srikar Chinam]

i'll be more specific. The text file I have has millions of numbers like 200201382 in a column i.e.,

200201382 200201383 200201384 200201385 . . .

When i'm trying to import this data, matlab is converting 200201382 to 200200000

Please have a look at the attached screenshot

[Srikar Chinam]

screenshot

[Star Strider]

Maybe I’m missing something, but it looks to me as though all the digits are there (at least in the screenshot). MATLAB is converting the numbers to exponential notation, but retaining all nine significant figures.

[Image Analyst]

Please attach the data file - just the first few lines, not the whole thing.

[John D'Errico]

How are you reading it in? While you SAY that you will be specific, so far, we have seen only hints of what you are doing. Making us guess?