Hi, I have a plot where I want to display some dash. But as the density of points increases, the dashes merge and become a straight line. This can be seen on the left of the plot near x=0.02. Does anybody knows how to avoid this behavior? Thank you for your help, [Screen Shot 2020-02-02 at 17.…

Use something like Interpolations.jl and sample your functions at regular intervals?

Indeed, if there is no built in solution in Plots, that would be a good way! Thank you

Which Plots backend are you using? Shouldn’t happen with gr(): using GR x = 1:100 setlinetype(2) plot(log.(x),x) [Screen Shot 2020-02-02 at 21.16.52]

It is GR…here is a MWE: N = 5 x = 1:(2N) ls = vcat([:solid for _=1:N], [:dash for _=1:N]) plot(log.(x),x; linestyle = ls) N = 5: [Screen Shot 2020-02-02 at 22.00.28] N=50 [Screen Shot 2020-02-02 at 22.00.48]

Unfortunately I still cannot see where the problem is in GR, especially since PyPlot and PlotlyJS give exactly the same results … What should the plot look like after repeated overdrawing? Do you probably want the internal dash offset be the same?

[image] jheinen: What should the plot look like after repeated overdrawing? I want the dash to be visible, constant density is maybe asking too much

This would mean drawing the dash pattern with the line and the (window) background color. In GR this is theoretically possible, but only via an internal (software) emulation. Is this really what you want, or did I misunderstand the purpose?

[image] jheinen: Is this really what you want, or did I misunderstand the purpose? I can reformulate to be sure. It is linked to this post . I want to be able to draw curves and specify, with an argument, the linestyle of the points so as to be able to control which parts of the curve are con…

Ok - I understand. But, IMO that’s a functionality that should be provided/implemented in Plots.jl - not in the backend code. The main reason is, that most underlying (low-level) systems would not support multiple line attributes within a path.

Constant dash density in Plots.jl

General Usage

rveltz February 3, 2020, 8:29am 6

Note that I am using broadcasting of arguments as in this discourse post

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Constant dash density in Plots.jl

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