Plot doesn't work, doesn't display in the pane in Atom

General Usage
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1

Hey everyone !
It’s my first topic on this forum and i’m here to ask a little question about the use of plot. I have done the following code to display a landmark in 3D. But when i call the function “affichage_R”, nothing display. I have made some research, tried some things like gui() after the plot but still nothing. Do u have any ideas?
Kind Regards,
Dailysight

using Plots
l = 1; 

function affichage_R(Tc, l)

x=zeros(3);
y=zeros(3);
z=zeros(3);

P=Tc[1:3,4];
P1=Tc[1:3,4]+Tc[1:3,1]*l;#Pour Sc
P2=Tc[1:3,4]+Tc[1:3,2]*l;#Pour Nc
P3=Tc[1:3,4]+Tc[1:3,3]*l;#Pour Ac

#Affichage Sc
x[1]=P[1];
x[2]=P1[1];
y[1]=P[2];
y[2]=P1[2];
z[1]=P[3];
z[2]=P1[3];

plot3d(x,y,z)
gui()
#Affichage Nc
x[1]=P[1];
x[2]=P2[1];
y[1]=P[2];
y[2]=P2[2];
z[1]=P[3];
z[2]=P2[3];
plot3d!(x,y,z)

#Affichage Ac
x[1]=P[1];
x[2]=P3[1];
y[1]=P[2];
y[2]=P3[2];
z[1]=P[3];
z[2]=P3[3];
plot3d!(x,y,z)

end

affichage_R(T01,l)
2

Hi! Welcome to Julia’s discourse forum!

The problem in here is that you need to either return the plot object from the function, or to call display() before. This is done automatically when you call plot directly in the REPL (and not inside a function).

example:

using Plots; gr()

function plotsomething()
    p1 = plot(rand(10))
    1+1 # doing something else
    return p1
end

or calling display inside

using Plots; gr()

function plotsomething()
    p1 = plot(rand(10))
    1+1 # doing something else
    display(p1)
    sleep(10)
end

You can read about it in the documentation, which says:

Plotting in Scripts

Now that you’re making useful plots, go ahead and add these plotting commands to a script. Now call the script… and the plot doesn’t show up? This is because Julia in interactive use calls display on every variable that is returned by a command without a ; . Thus in each case above, the interactive usage was automatically calling display on the returned plot objects.

In a script, Julia does not do automatic displays (which is why ; is not necessary). However, if we would like to display our plots in a script, this means we just need to add the display call. For example:

display(plot(x, y))

If we have a plot object p , we can do display(p) at any time.

3 Likes
3

Oh i understand ! Seems logic after all !
Thank you to unlock me :slight_smile:
Kind Regards