Is there a function to clip an array to a maximum value? e.g. set values in an array greater than 1.0 to 1.0 Note that the original poster on Slack cannot see your response here on Discourse. Consider transcribing the appropriate answer back to Slack, or pinging the poster here on Discourse so they…

Yup, it’s called clamp!: help?> clamp! search: clamp! clamp clamp!(array::AbstractArray, lo, hi) Restrict values in array to the specified range, in-place. See also clamp.

Just for clamping the maximum, and not the minimum, you can use x .= min.(x, hi)

[image] rdeits: Yup, it’s called clamp! I wonder why we kept the clamp! function, given that it seems equivalent to array .= clamp.(array, lo, hi) Probably it was just an oversight that it didn’t get removed when we removed the other vectorized functions in favor of dot calls?

Yeah, I was actually surprised to find it as well–it does feel like a vestige from the era before broadcasting.

The redundancy has been mentioned before in stackoverflow . Curiously, I get different timing for clamp vs. clamp!: using BenchmarkTools X0 = randn(100,100); X = copy(X0); @btime clamp!($X, -0.5, 0.5); # 1.803 μs (0 allocations: 0 bytes) clampme!(X, lo, hi) = X .= clamp.(X, lo, hi) X = copy(X0); @…

I think slowness may be related to this issue

I don’t think so, since that issue is for 1d arrays, but in this case it’s almost the same speed for 1d arrays: julia> X = randn(100*100); julia> @btime clamp!($X, -0.5, 0.5); 1.723 μs (0 allocations: 0 bytes) julia> @btime clampme!($X, -0.5, 0.5); 1.721 μs (0 allocations: 0 bytes) It seems …

I think this is 43153 , broadcasts which re-use an array.

Is there a function to clip an array to a maximum value? e.g. set values in an arr

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Is there a function to clip an array to a maximum value? e.g. set values in an arr

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