tbreloff/Plots.jl

Powerful convenience for Julia visualizations and data analysis http://juliaplots.github.io/

gideonsimpson

@gideonsimpson

hi, i have a problem that the tick labels on my color bar are partially cut off because i used larger font sizes. how can I extend the figure size so they're fully rendered?

BridgingBot

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[slack] <loki._.> you can set the figure size with size = ( width, height )

BridgingBot

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[slack] <daschw> Or you could increase the margin, like e.g bottom_margin = http://5Plots.mm , you have to find the value and unit that fits your needs.

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Roman Bange

@rbange

hey guys, any idea on how to decrease the padding between multiple subplots in a layout?

BerndR

@bernd1995

Hey guys, is it somehow possible to 'load' a previously created plot again into julia and retrieve data like x-, y- and z-components?
In particular I would be interested to do this for a *.html file created with the plotly-backend.

HelgavonLichtenstein

@HelgavonLichtenstein

Hello, how could I plot negative numbers with log10? I have

@df df_final_biomass_diff_array_fw_10_industry_high scatter(:body_mass_fw_1,:bio_diff_S33_1, xaxis = :log10, yaxis = log10.(:bio_diff_S33_1 .+ 10))
Which works, but then the yaxis disappears.

I am using Plots with Julia 1.5

Roman Bange

@rbange

@HelgavonLichtenstein obviously you cannot simply calculate the log10 of negative values, thats why Plots fails to do this

had the same issue a while ago

i modified my data by applying a log-modulus transformation beforehand https://blogs.sas.com/content/iml/2014/07/14/log-transformation-of-pos-neg.html

HelgavonLichtenstein

@HelgavonLichtenstein

Yes, I understand, but I try to make the values positive by adding 10 to the yaxis

A MWE

x = -10:0.01:10
y = x
plot(x, y)
plot(x, y, yaxis = log10.(y .+ 100))

It works, but the scale disappears from y

Roman Bange

@rbange

Ah i see

HelgavonLichtenstein

@HelgavonLichtenstein

I like this log-modulus transformation you shared

Roman Bange

@rbange

Its nice as you can boundlessly plot negative to positive values

I also tested the sample you shared, it does work as expected, but yaxis = log10.(y .+ 100) only yields values from 1.95 to 2.04 so its a straight line

Maybe the yaxis is displayed, but outside of the value space? Meaning y samples are distributed e.g. 0-100, but the yaxis is shown at e.g. y=300

HelgavonLichtenstein

@HelgavonLichtenstein

How do you change the value space?

Roman Bange

@rbange

Guess its fitted to the given data

i think the proper solution is

@df df_final_biomass_diff_array_fw_10_industry_high scatter(:body_mass_fw_1,log10.(:bio_diff_S33_1 .+ 10), xaxis = :log10)

HelgavonLichtenstein

@HelgavonLichtenstein

Neato, using the log-modulus transformation it looks like

@df df_final_biomass_diff_array_fw_10_industry_high scatter(:body_mass_fw_1, sign.(:bio_diff_S33_1).*log10.(abs.(:bio_diff_S33_1).+1), xaxis = :log10)

Roman Bange

@rbange

Nice! Glad to help

HelgavonLichtenstein

@HelgavonLichtenstein

Thanks!

Do you know how to make the yaxis show 10^ like on the xaxis? That would be perfect if possible

Roman Bange

@rbange

I only know the workaround by specifing the ticks manually yticks!([-1:1:1;], ["min", "zero", "max"])

guess you can also pass a tuple to the yticks attribute withtin the scatter() call, there is an example somewhere in the documentation

Ah yes, like this yticks = ([0:0.2:1;], ["$i\\%" for i in 0:20:100])

HelgavonLichtenstein

@HelgavonLichtenstein

I don't understand the second half of that

Roman Bange

@rbange

the content doesnt matter, this is just from one of my plots and generates the yaxis labels

scatter(..., yticks = (ticks, labelsforeachtick))

HelgavonLichtenstein

@HelgavonLichtenstein

Unfortunately I can't figure it out plot(x, sign.(y).*log10.(abs.(y).+1),yticks = ([-1.0:0.1:1.0], 10^$ticks)) doesn't work because $ is only for strings.

Nonetheless, thank you very much for your suggestion!

BridgingBot

@GitterIRCbot

[slack] <dpsanders> Is it possible to change the way that arrows are displayed by Plots (with GR backend) in plot(x, y, arrow=true)?

[slack] <Moelf> I think the answer is no by looking at the

Supported arguments
in docs' GR page

[slack] <dpsanders> Hmm OK, thanks

BridgingBot

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[slack] <loki._.> Plots allows to pass an Arrow contructor to change some parameters, but I don’t know whether this is implemented in the backend

BridgingBot

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[slack] <dpsanders> How do you use that?

BridgingBot

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[slack] <loki._.> arrow = Arrow(0.5, 0.1)

BridgingBot

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[slack] <pfitzseb> Anyone know why I'm getting
```julia> graphplot(wheel_digraph(10))
ERROR: MethodError: no method matching plot(::GraphRecipes.GraphPlot)
Stacktrace:
[1] graphplot(::SimpleDiGraph{Int64}; kw::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}) at /home/pfitzseb/.julia/packages/RecipesBase/92zOw/src/RecipesBase.jl:357
[2] graphplot(::SimpleDiGraph{Int64}) at /home/pfitzseb/.julia/packages/RecipesBase/92zOw/src/RecipesBase.jl:357
[3] top-level scope at REPL[13]:1

(@v1.5) pkg> st
Status ~/.julia/environments/v1.5/Project.toml
[bd48cda9] GraphRecipes v0.5.4
[093fc24a] LightGraphs v1.3.0
[626554b9] MetaGraphs v0.6.6
[91a5bcdd] Plots v1.8.1```

[slack] <pfitzseb> maybe something going wrong with Requires or whatnot?

BridgingBot

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[slack] <daschw> It works for me with the same versions:

(@graphplots) pkg> st
Status `~/.julia/environments/graphplots/Project.toml`
  [bd48cda9] GraphRecipes v0.5.4
  [093fc24a] LightGraphs v1.3.0
  [626554b9] MetaGraphs v0.6.6
  [91a5bcdd] Plots v1.8.1

[slack] <pfitzseb> oh wait

[slack] <pfitzseb> I think I forgot to load Plots...

[slack] <pfitzseb> :bang-head-on-wall:

BridgingBot

@GitterIRCbot

[slack] <dpsanders> ```
julia> using Plots: Arrow

julia> plot([(3, 4), (5, 6)], arrow=Arrow(0.5, 0.2))
ERROR: MethodError: no method matching Arrow(::Float64, ::Float64)```

[slack] <dpsanders> Thanks. arrow=Arrow(:simple, :head, 1.0, 1.0) works, but indeed doesn’t change the arrowhead in GR 😕. I think the syntax arrow=arrow(1.0, 1.0) is also supposed to work.

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