I wish to restrict the number of significant digits displayed on the REPL according to a context-dependent format like format in MATLAB or Octave. I have looked through the documentation, but have not seen what I am looking for. Is this function available as standard or via a package?

[image] stevengj: Implementing something both flexible and composable requires a bit of care, but is do-able by someone who understands Julia’s I/O and IOContext architecture, I think. It’s not a 15-minute job, though, and someone has to volunteer do the work. I volunteered. :wink: A possib…

Check this post for a Matlab-like solution.

I have written a function to invoke within the REPL, called say, display_digits like so: function display_digits(n) using Printf Base.show(io::IO, f::Float64) = @printf(io, "%.nf", f) end I have these questions: Where should this function file reside so that Julia sees it automatically? H…

To use a variable in the Printf format string, see for example this post . You could define your function in the startup.jl file.

Related discussions: How to display Float64 with more digits How to print a number to X digits? julia - Jula REPL number formatting - Stack Overflow function to change numeric output format · Issue #6493 · JuliaLang/julia · GitHub

But why doesn’t the language itself provide a solution for this? Users interest is not lacking. And what do these errors mean? julia> function format(n) Base.show(io::IO, f::Float64) = Printf.format(io, "%.nf", f) end ERROR: syntax: Global method definition around REPL[9]:1 needs to be placed at …

[image] joa-quim: And what do these errors mean? You can’t overload a global function (e.g. Base.show) inside another function, without using eval. Note that overloading Base.show like this is generally a bad idea — it will effect everything, not just the REPL. (e.g. code doing I/O to files…

@MA_Laforge has discussed these issues in NumericIO.jl.

How do I restrict the number of digits in the REPL display?

New to Julia

ctkelley December 12, 2023, 6:45pm 7

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How do I restrict the number of digits in the REPL display?

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