212 lines
4.6 KiB
Markdown
212 lines
4.6 KiB
Markdown
# Examples for backend: qwt
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- Supported arguments: `args`, `axis`, `background_color`, `color`, `fillto`, `foreground_color`, `group`, `heatmap_c`, `kwargs`, `label`, `legend`, `linestyle`, `linetype`, `marker`, `markercolor`, `markersize`, `nbins`, `reg`, `ribbon`, `show`, `size`, `title`, `width`, `windowtitle`, `xlabel`, `xticks`, `ylabel`, `yrightlabel`, `yticks`
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- Supported values for axis: `:auto`, `:left`, `:right`
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- Supported values for linetype: `:none`, `:line`, `:path`, `:steppre`, `:steppost`, `:sticks`, `:scatter`, `:heatmap`, `:hexbin`, `:hist`, `:bar`
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- Supported values for linestyle: `:auto`, `:solid`, `:dash`, `:dot`, `:dashdot`, `:dashdotdot`
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- Supported values for marker: `:none`, `:auto`, `:rect`, `:ellipse`, `:diamond`, `:utriangle`, `:dtriangle`, `:cross`, `:xcross`, `:star1`, `:star2`, `:hexagon`
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- Is `subplot`/`subplot!` supported? Yes
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### Initialize
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```julia
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using Plots
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qwt()
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```
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### Lines
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A simple line plot of the 3 columns.
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```julia
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plot(rand(50,5),w=3)
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```
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### Functions
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Plot multiple functions. You can also put the function first.
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```julia
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plot(0:0.01:4π,[sin,cos])
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```
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###
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You can also call it with plot(f, xmin, xmax).
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```julia
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plot([sin,cos],0,4π)
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```
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###
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Or make a parametric plot (i.e. plot: (fx(u), fy(u))) with plot(fx, fy, umin, umax).
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```julia
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plot(sin,(x->begin # /home/tom/.julia/v0.4/Plots/docs/example_generation.jl, line 33:
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sin(2x)
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end),0,2π,legend=false,fillto=0)
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```
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### Global
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Change the guides/background without a separate call.
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```julia
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plot(rand(10); title="TITLE",xlabel="XLABEL",ylabel="YLABEL",background_color=RGB(0.2,0.2,0.2))
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```
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### Two-axis
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Use the `axis` or `axiss` arguments.
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Note: Currently only supported with Qwt and PyPlot
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```julia
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plot(Vector[randn(100),randn(100) * 100]; axis=[:l,:r],ylabel="LEFT",yrightlabel="RIGHT")
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```
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### Vectors w/ pluralized args
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Plot multiple series with different numbers of points. Mix arguments that apply to all series (singular... see `marker`) with arguments unique to each series (pluralized... see `colors`).
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```julia
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plot(Vector[rand(10),rand(20)]; marker=:ellipse,markersize=8,colors=[:red,:blue])
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```
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### Build plot in pieces
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Start with a base plot...
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```julia
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plot(rand(100) / 3; reg=true,fillto=0)
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```
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###
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and add to it later.
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```julia
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scatter!(rand(100); markersize=6,c=:blue)
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```
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### Heatmaps
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```julia
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heatmap(randn(10000),randn(10000); nbins=100)
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```
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### Line types
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```julia
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types = intersect(supportedTypes(),[:line,:path,:steppre,:steppost,:sticks,:scatter])
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n = length(types)
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x = Vector[sort(rand(20)) for i = 1:n]
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y = rand(20,n)
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plot(x,y; t=types,lab=map(string,types))
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```
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### Line styles
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```julia
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styles = setdiff(supportedStyles(),[:auto])
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plot(cumsum(randn(20,length(styles)),1); style=:auto,label=map(string,styles),w=5)
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```
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### Marker types
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```julia
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markers = setdiff(supportedMarkers(),[:none,:auto])
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scatter(0.5:9.5,[fill(i - 0.5,10) for i = length(markers):-1:1]; marker=:auto,label=map(string,markers),markersize=10)
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```
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### Bar
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x is the midpoint of the bar. (todo: allow passing of edges instead of midpoints)
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```julia
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bar(randn(1000))
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```
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### Histogram
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```julia
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histogram(randn(1000); nbins=50)
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```
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### Subplots
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subplot and subplot! are distinct commands which create many plots and add series to them in a circular fashion.
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You can define the layout with keyword params... either set the number of plots `n` (and optionally number of rows `nr` or
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number of columns `nc`), or you can set the layout directly with `layout`.
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Note: Gadfly is not very friendly here, and although you can create a plot and save a PNG, I haven't been able to actually display it.
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```julia
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subplot(randn(100,5); layout=[1,1,3],linetypes=[:line,:hist,:scatter,:step,:bar],nbins=10,legend=false)
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```
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### Adding to subplots
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Note here the automatic grid layout, as well as the order in which new series are added to the plots.
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```julia
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subplot(randn(100,5); n=4)
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```
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###
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```julia
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subplot!(randn(100,3))
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```
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