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Output

A Plot is only displayed when returned (a semicolon will suppress the return), or if explicitly displayed with display(plt), gui(), or by adding show = true to your plot command.

Tip: You can have MATLAB-like interactive behavior by setting the default value: default(show = true)

Standalone window

Calling gui(plt) will open a standalone window. gui(), like plot!(...), applies to the "current" Plot. Returning a Plot object to the REPL is like calling gui(plt).

Jupyter / IJulia

Plots are shown inline when returned to a cell. The default output format can be changed by the html_output_format attribute, with alias fmt:

plot(rand(10), fmt = :png)

Juno / Atom

Plots are shown in the Atom PlotPane when possible, either when returned to the console or to an inline code block. At any time, the plot can be opened in a standalone window using the gui() command. The default behavior can be switched to match the REPL behavior (i.e. opening a standalone window) by setting ENV["PLOTS_USE_ATOM_PLOTPANE"] = "false" before loading Plots.

Note that javascript-based libraries (for example: PlotlyJS) cannot be shown in the PlotPane due to issues within Atom's internals.

savefig / format

Plots support 2 different versions per save-command. Command savefig chooses file type automatically based on the file extension.

savefig(fn) # save the most recent fig as fn
savefig(plot_ref, fn) # save the fig referenced by plot_ref as fn

In addition, Plots offers shorthands like png(fn), etc. In this case the string fn containing the filename does not need a file extension.

png(fn) # save the current fig as png with filename fn
png(plot_ref, fn) # save the fig referenced by plot_ref as png with filename fn

File formats supported by most graphical backends

  • png (default output format)
  • svg
  • PDF

Supported output file formats

Note: not all backends support every output file format ! A simple table showing which format is supported by which backend

format backends
eps inspectdr, plotlyjs, pyplot
html plotly, plotlyjs
pdf gr, inspectdr, pgfplots, plotlyjs, pyplot
png glvisualize, gr, inspectdr, plotly, plotlyjs, pyplot
ps gr, pyplot
svg gr, inspectdr, pgfplots, plotly, plotlyjs, pyplot
tex pgfplots
text hdf5, unicodeplots