Plots.jl/docs/pyplot_examples.md
2015-09-17 17:05:08 -04:00

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# Examples for backend: pyplot
- Supported arguments: `args`, `axis`, `color`, `kwargs`, `label`, `legend`, `linestyle`, `linetype`, `marker`, `markercolor`, `markersize`, `nbins`, `size`, `title`, `width`, `windowtitle`, `xlabel`, `ylabel`, `yrightlabel`
- Supported values for axis: `:auto`, `:left`, `:right`
- Supported values for linetype: `:none`, `:line`, `:step`, `:stepinverted`, `:sticks`, `:scatter`, `:heatmap`, `:hexbin`, `:hist`, `:bar`
- Supported values for linestyle: `:auto`, `:solid`, `:dash`, `:dot`, `:dashdot`
- Supported values for marker: `:none`, `:auto`, `:rect`, `:ellipse`, `:diamond`, `:utriangle`, `:dtriangle`, `:cross`, `:xcross`, `:star1`, `:hexagon`
- Is `subplot`/`subplot!` supported? No
### Initialize
```julia
using Plots
pyplot!()
```
### Lines
A simple line plot of the 3 columns.
```julia
plot(rand(100,3))
```
![](../img/pyplot/pyplot_example_1.png)
### Functions
Plot multiple functions. You can also put the function first.
```julia
plot(0:0.01:4π,[sin,cos])
```
![](../img/pyplot/pyplot_example_2.png)
###
You can also call it with plot(f, xmin, xmax).
```julia
plot([sin,cos],0,4π)
```
![](../img/pyplot/pyplot_example_3.png)
###
Or make a parametric plot (i.e. plot: (fx(u), fy(u))) with plot(fx, fy, umin, umax).
```julia
plot(sin,(x->begin # /home/tom/.julia/v0.4/Plots/docs/example_generation.jl, line 33:
sin(2x)
end),0,2π,legend=false)
```
![](../img/pyplot/pyplot_example_4.png)
### Global
Change the guides/background without a separate call.
```julia
plot(rand(10); title="TITLE",xlabel="XLABEL",ylabel="YLABEL",background_color=RGB(0.5,0.5,0.5))
```
![](../img/pyplot/pyplot_example_5.png)
### Two-axis
Use the `axis` or `axiss` arguments.
Note: Currently only supported with Qwt and PyPlot
```julia
plot(Vector[randn(100),randn(100) * 100]; axiss=[:left,:right],ylabel="LEFT",yrightlabel="RIGHT")
```
![](../img/pyplot/pyplot_example_6.png)
### Vectors w/ pluralized args
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`).
```julia
plot(Vector[rand(10),rand(20)]; marker=:ellipse,markersize=8,colors=[:red,:blue])
```
![](../img/pyplot/pyplot_example_7.png)
### Build plot in pieces
Start with a base plot...
```julia
plot(rand(100) / 3; reg=true,fillto=0)
```
![](../img/pyplot/pyplot_example_8.png)
###
and add to it later.
```julia
scatter!(rand(100); markersize=6,color=:blue)
```
![](../img/pyplot/pyplot_example_9.png)
### Heatmaps
```julia
heatmap(randn(10000),randn(10000); nbins=100)
```
![](../img/pyplot/pyplot_example_10.png)
### Suported line types
All options: (:line, :orderedline, :step, :stepinverted, :sticks, :scatter, :none, :heatmap, :hexbin, :hist, :bar)
```julia
types = intersect(supportedTypes(),[:line,:step,:stepinverted,:sticks,:scatter])
n = length(types)
x = Vector[sort(rand(20)) for i = 1:n]
y = rand(20,n)
plot(x,y; linetypes=types,labels=map(string,types))
```
![](../img/pyplot/pyplot_example_11.png)
### Supported line styles
All options: (:solid, :dash, :dot, :dashdot, :dashdotdot)
```julia
styles = setdiff(supportedStyles(),[:auto])
plot(rand(20,length(styles)); linestyle=:auto,labels=map(string,styles))
```
![](../img/pyplot/pyplot_example_12.png)
### Supported marker types
All options: (:none, :auto, :ellipse, :rect, :diamond, :utriangle, :dtriangle, :cross, :xcross, :star1, :star2, :hexagon)
```julia
markers = setdiff(supportedMarkers(),[:none,:auto])
scatter(0.5:9.5,[fill(i - 0.5,10) for i = length(markers):-1:1]; marker=:auto,labels=map(string,markers),markersize=10)
```
![](../img/pyplot/pyplot_example_13.png)
### Bar
x is the midpoint of the bar. (todo: allow passing of edges instead of midpoints)
```julia
bar(randn(1000))
```
![](../img/pyplot/pyplot_example_14.png)
### Histogram
note: fillto isn't supported on all backends
```julia
histogram(randn(1000); nbins=50,fillto=20)
```
![](../img/pyplot/pyplot_example_15.png)