Questions tagged [rounding]

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Rounding Real number

I have real numbers in array, I want to round (or truncate) these numbers to 2-digit after decimal point, then I want to write values to Excel File For example if I have ...
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1 vote
1 answer
44 views

Rounding Issue with a number containing "`"

I would like to round a number saved in a weird format (I have no idea what the "`" means, could someone explain?) to 3 digits: ...
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  • 818
4 votes
1 answer
96 views

Round to certain values

For a program I write I need some optimal values. I calculated them using Mathematica and I get something like this: ...
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  • 1,114
0 votes
0 answers
122 views

Rounding corners of lines

I can easily produce rectangles with rounder corners using RoundingRadius. However, I am unable to do for an open curve ...
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0 votes
0 answers
42 views

What is the limit of digits to show in the conversion of an exact number to an Arbitrary Precision Number?

By executing something like N[π, c] what is the maximum positive integer value c can have until the output is compromised by ...
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2 votes
1 answer
227 views

Is NumberForm double rounding numbers?

A number like 0.644696875 is represented internally as 0.6446968749999...: N[FromDigits[RealDigits[0.644696875, 2], 2], $MachinePrecision] (* 0.6446968749999999 *) ...
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8 votes
3 answers
660 views

Count number of occurences of particular numbers in list

I have a list of numbers which I have rounded and now all numbers are divisible by 5. ...
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  • 185
2 votes
1 answer
134 views

Efficient Round edition with different rounding direction

As pointed out in this post, Mathematica has a special version of Round that Round rounds numbers of the form x.5 toward the nearest even integer. A comment by ...
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  • 15.6k
3 votes
3 answers
257 views

Problems with rounding giving too many digits

My current code is: ...
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  • 676
0 votes
0 answers
71 views

Return the precision of the first non zero digit in a number for measurement error representation function

I'd like to return the precision of the first non zero digit in a number. The motivation is so that I can quickly construct my error notation which is the bracketed notation, e.g. $x = 1.234$ with ...
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  • 2,291
1 vote
1 answer
3k views

Rounding a number to decimal places and keeping a trailing zero

It's often useful for me to round numbers to some decimal place for printing on a graph or figure. I usually do this by: ...
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  • 2,291
1 vote
2 answers
110 views

How can I Influence the number of digits when printing a polynomial expression or when I want to make it a String?

I have an expession (it is the result of Fit) but I want to print or display an abbreviated form with all numbers in it rounded to say 6 decimal digits. ...
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2 votes
0 answers
83 views

Why does Mathematica round numbers in this way where the fractional part is 0.5? [duplicate]

I was trying to comment on sequence https://oeis.org/A047229 in the OEIS, when one of the editors pointed out that the rounding is done wrong in this Mathematica one-liner: ...
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1 vote
1 answer
369 views

Chop not working [closed]

I am running a function that has a large output in matrix format with small, complex parts added to the numbers- basically a rounding error. I am trying to use Chop to obtain use-able results, but ...
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2 votes
1 answer
263 views

Create an accumulator array from a function

I am making some images for a project about the hough transform line detection, I am showing the slope-intercept form , the normal form and their accumulator arrays to show the peaks. I am kind of new ...
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  • 63
5 votes
3 answers
531 views

Opposite Collatz Conjecture

I'm trying to explore what would happen if you change the collatz conjecture to flip the equations for odds and evens. So if you have an even number you multiply by 3, add 1, and divide by 2. If you ...
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  • 153
1 vote
3 answers
206 views

Keep leading/trailing zeroes (like Defer except with numbers) in a given number

I'm trying to write a function that counts the number of significant figures a given number has so I can ensure my calculations are rounded correctly; however, I am having a lot of trouble preventing ...
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  • 113
0 votes
1 answer
288 views

Why doesn't the Round function work on decimals and how to fix it or work around it [duplicate]

I'm trying to specify yaxis tick labels from 0 to 1.0 in steps of 0.1. This is what I get: ...
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6 votes
2 answers
1k views

Round vs. Floor vs. Ceiling for non-integers non-orders-of-magnitude

I understand that Round give the nearest even integer for cases where the number is between two integers, i.e. Round[2.5] = 2 ...
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  • 415
6 votes
1 answer
162 views

Is the divergence between Round and setting an explicit precision intentional or a bug?

Introductory remark: I take it (from Mathematica's online documentation), that Precision is effectively the number of significant digits, as seen by the system. ...
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3 votes
3 answers
3k views

Rounding to the nearest decimal and pasting such output into an Input cell

This question is very closely related to two earlier ones: Rounding to the nearest decimal and How do you round numbers so that it affects computation? but confronts an additional issue not ...
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