In the past, many users requested more interactivity for
GR console applications. Embedding
For this reason, a new library was developed that was designed from the beginning to provide the basic functionality for interactive graphics applications. What was previously reserved for GUI or web applications can now be used in console applications without changing any script.
To use this functionality, it is sufficient to set an environment variable before starting Julia:
Of course, this can also be done directly in the Julia scripts before importing the
ENV["GRDISPLAY"] = "plot" using GR
using GR plot(randn(20,5), labels=("a", "b", "c", "d", "e"))
The plot can be zoomed or panned with the mouse wheel - regions of interest can be selected (with the right mouse button) and reset (with a double click), and the corresponding X and Y coordinates are displayed when moving over the points. Reducing and enlarging the entire plot is of course also possible.
Of course, this also works with a well-known example:
using GR using DelimitedFiles data = readdlm("covid19.csv", ',') ncountries, ncols = size(data) ndays = ncols - 4 countries = ["Germany", "Austria", "Belgium", "Netherlands", "France", "Italy", "Spain", "US"] cummulated = Dict() for i in 1:ncountries country = data[i,2] if country in countries if !haskey(cummulated, country) cummulated[country] = zeros(ndays) end cummulated[country] .+= collect(data[i,5:end]) end end day = collect(Float64, 1:ndays); confirmed = hcat([cummulated[country] for country in countries]...) plot(day, confirmed, xlim=(0, ndays+1), ylim=(10, 100_000_000), ylog=true, title="Confirmed SARS–CoV–2 infections", xlabel="Day", ylabel="Confirmed", labels=countries, location=4)
In the case of three-dimensional representations, e.g. surface plots, these can be rotated with the mouse. To do this, the mouse must be moved accordingly while holding down the left mouse button.
using GR surface(peaks())
Even though the functionality shown here is still experimental in nature, it can already be put to good use. In a future version, simple editing options for plots will also be provided.
However, there are still some hurdles to overcome in order to integrate these functionality into
Plots.jl. It is probably easier to implement all the functionality of
Plots in a new
GRM backend. The technical requirements for this would be given in
GRM in any case.