图：jl：更改logscale tick的更改形式为正常格式

发布于 2025-01-22 18:38:57 字数 1059 浏览 5 评论 0原文

考虑以下图

using Plots
pyplot()

radix_range_xticks = -4:4
radix_range = LinRange(-4, 4, 100)
xs = 2.0 .^ radix_range_xticks
pf = 50.0
bw = 25.0
roofline(x, bw, pf) = min(bw*x, pf)
ys = roofline.(xs, bw, pf)
p = plot(xs, ys; xscale=:log2, yscale=:log10)
xticks!(p, xs)

会导致图片的图。

X-Ticks和Y-Ticks都格式为指数。添加关键字参数xformatter =：Scientific无济于事，因为它只是更改radix而不是整个数字。

那么，我如何在科学符号中格式化tick呢？我想完全摆脱base^endegons符号。

我还尝试将字符串 s的迭代性传递到XTICKS！，但没有在其上派遣。

我试图看在文档中可能会有所帮助。

在Julia lang话语上进行交叉封闭“>在这里

原文

Consider the following plot

using Plots
pyplot()

radix_range_xticks = -4:4
radix_range = LinRange(-4, 4, 100)
xs = 2.0 .^ radix_range_xticks
pf = 50.0
bw = 25.0
roofline(x, bw, pf) = min(bw*x, pf)
ys = roofline.(xs, bw, pf)
p = plot(xs, ys; xscale=:log2, yscale=:log10)
xticks!(p, xs)

This results in a plot that looks like this.

The x-ticks and y-ticks both are formatted as exponentials. Adding the keyword argument xformatter=:scientific does not help, as it just changes the radix instead of the whole number.

So, how can I format the ticks in e.g. scientific notation? I would like to get rid of the base^exponent notation altogether.

I also tried passing an iterable of Strings to xticks!, but it does not dispatch on it.

I tried to look here in the documentation, but could not anything else that might help.

Crossposted on the Julia lang discourse here

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嘿咻 2025-01-29 18:38:57

仅通过一个峰值的字符串将无法工作，该图还需要有关将这些字符串放在X轴上的信息。以下工作可以完成工作。

xticks!(p, xs, string.(xs))

将最后一个参数替换为tick所需的任何格式。

Passing only an iterable of strings would not work, the plot also needs information about where to place those strings on the x-axis. The following does the job.

xticks!(p, xs, string.(xs))

Replace the last argument with whatever formatting is required for the ticks.

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梨涡少年 2025-01-29 18:38:57

您可能需要检查ControlSystems/plotting.jl（getLogticks）。
它似乎有使用科学符号的案例。以下使用壁虱数量来决定使用纯指数还是科学：

function getLogTicks(x, minmax)
    minx, maxx =  minmax
    major_minor_limit = 6
    minor_text_limit  = 8
    min               = minx <= 0 ? minimum(x) : ceil(log10(minx))
    max               = floor(log10(maxx))
    major             = exp10.(min:max)
    if Plots.backend() ∉ [Plots.GRBackend(), Plots.PlotlyBackend()]
        majorText = [latexstring("\$10^{$(round(Int64,i))}\$") for i = min:max]
    else
        majorText = ["10^{$(round(Int64,i))}" for i = min:max]
    end
    if max - min < major_minor_limit
        minor     = [j*exp10(i) for i = (min-1):(max+1) for j = 2:9]
        if Plots.backend() ∉ [Plots.GRBackend(), Plots.PlotlyBackend()]
            minorText = [latexstring("\$j\\cdot10^{$(round(Int64,i))}\$") for i = (min-1):(max+1) for j = 2:9]
        else
            minorText = ["$j*10^{$(round(Int64,i))}" for i = (min-1):(max+1) for j = 2:9]
        end

        ind       = findall(minx .<= minor .<= maxx)
        minor     = minor[ind]
        minorText = minorText[ind]
        if length(minor) > minor_text_limit
            minorText = [" " for t in minorText]#fill!(minorText, L" ")
        end
        perm = sortperm([major; minor])
        return [major; minor][perm], [majorText; minorText][perm]

    else
        return major, majorText
    end
end

You might want to check out ControlSystems/plotting.jl(getLogTicks).
It seems to have a case for using scientific notation. The following uses number of ticks to decide whether to use pure exponent or scientific:

function getLogTicks(x, minmax)
    minx, maxx =  minmax
    major_minor_limit = 6
    minor_text_limit  = 8
    min               = minx <= 0 ? minimum(x) : ceil(log10(minx))
    max               = floor(log10(maxx))
    major             = exp10.(min:max)
    if Plots.backend() ∉ [Plots.GRBackend(), Plots.PlotlyBackend()]
        majorText = [latexstring("\$10^{$(round(Int64,i))}\quot;) for i = min:max]
    else
        majorText = ["10^{$(round(Int64,i))}" for i = min:max]
    end
    if max - min < major_minor_limit
        minor     = [j*exp10(i) for i = (min-1):(max+1) for j = 2:9]
        if Plots.backend() ∉ [Plots.GRBackend(), Plots.PlotlyBackend()]
            minorText = [latexstring("\$j\\cdot10^{$(round(Int64,i))}\quot;) for i = (min-1):(max+1) for j = 2:9]
        else
            minorText = ["$j*10^{$(round(Int64,i))}" for i = (min-1):(max+1) for j = 2:9]
        end

        ind       = findall(minx .<= minor .<= maxx)
        minor     = minor[ind]
        minorText = minorText[ind]
        if length(minor) > minor_text_limit
            minorText = [" " for t in minorText]#fill!(minorText, L" ")
        end
        perm = sortperm([major; minor])
        return [major; minor][perm], [majorText; minorText][perm]

    else
        return major, majorText
    end
end

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