colorkey min/max values

[montyvesselinov]

The new version of Gadfly seems to be overriding the min/max values set in color_continuous().

The code below

plot(x=rand(12), y=rand(12), color=rand(12), Scale.color_continuous(minvalue=-1, maxvalue=100)) 

produces a colorkey from -50 to 100.

How to force Gadfly to produce a colorkey from -1 to 100?

[DomHin]

I observe something similar with the colorkey values. Changing from float to int and minvalue maxvalue have no effect anymore.

So my basic advise is actually to use floats with minvalue maxvalue if someone provides these such as in my example p3. For better clarity in some plots this makes sense to have the colorbar ranging from 0.5 to 3.4 or so instead of 0 to 4.

using Gadfly, Colors

y = [0.1, 0.4, 0.9, 0.3, 0.25, 0.53, 1.1, 1.6, 1.9, 2.5]
p1 = plot(x=[1:1:length(y)...], y=[1:1:length(y)...], color=y, Geom.rectbin,
 Scale.color_continuous(colormap=p->RGB(0,p,0)))

y = [0.1, 0.4, 0.9, 0.3, 0.25, 0.53, 1.1, 1.6, 1.9, 2.8]
p2 = plot(x=[1:1:length(y)...], y=[1:1:length(y)...], color=y, Geom.rectbin,
 Scale.color_continuous(colormap=p->RGB(0,p,0)))

p3 = plot(x=[1:1:length(y)...], y=[1:1:length(y)...], color=y, Geom.rectbin,
 Scale.color_continuous(colormap=p->RGB(0,p,0),minvalue=0.1,maxvalue=2.8))

set_default_plot_size(10inch,4inch)
hstack(p1,p2,p3)

Is there a reason why the values change from floats to ints (p1 -> p2 if some value is larger)