MATLAB: Floating point question

MATLAB

Hello. I imported a .csv file to into matlab which has 10 million rows and 2 columns. I truncated the number of rows to 100 thousand. The first column has doubles but matlab only displays 4 digits after the decimal point. Is there a way to get more digits like 8 or 9?

Best Answer

The digits are there; they just aren't displayed.

format long

to view them

Related Solutions

MATLAB: How to get floating point number upto 4 decimal points

vpa(sym(x), 4)

will give you 4 digit symbolic numbers.

arrayfun(@(X)  sprintf('%.4f',X), x, 'uniform', 0)

cellstr(num2str(x(:), '%.4f')).'

will give you a cell array of strings representation.

round(x*10000)

will give you integers with an implied decimal point.

But if you are looking for floating point values with exactly 4 decimal places then the symbolic version is as close as you can get. The fraction 1/10 requires an infinite repeating value in binary, just like 1/7 requires an infinite repeating value in decimal. You just cannot represent 0.8462 exactly in binary.

MATLAB: I can’t display all the decimal digits in a plot

format long

Best Answer

Related Solutions

MATLAB: How to get floating point number upto 4 decimal points

MATLAB: I can’t display all the decimal digits in a plot

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