CODEWITHSUNDEEP
matlabplotmatlab-figure
Axiom22
Axiom22

Reputation: 3

Suppress opening a MATLAB figure

How can I prevent MATLAB from plotting an object and it's transformation? I am trying to rotate a surface and am using a transformation matrix to do it, but I don't want the surface to be plotted at any point, How can I stop it?

% Defines the input variables for the SC at the orbital point.
FoV = deg2rad(FoV);
dist = sqrt(xp^2 + yp^2 + zp^2);

xp = 168.820350140000;
yp = 22703.2636668300
zp = 40331.2908433900

% Generates a line from the orbit point to the centre of the Earth.
xl = linspace(0,xp);
yl = linspace(0,yp);
zl = linspace(0,zp);   

% Plots the orbits, orbit point, and Earth object onto the same plot.
plot3(xl,yl,zl);
hold on
scatter3(xp,yp,zp,100,'x','blue')

% Creates a cone for the FoV of the SC that targets the Earth's centre.
[x,y,z] = cylinder([dist*tan(FoV) 0],100);
h = surface(y,dist*z,x);
t = hgtransform('Parent',ax);
set(h,'Parent',t);
x_temp = get(h,'xdata');y_temp = get(h,'ydata');z_temp = get(h,'zdata'); % Duplicates data.

% Determines the coordinate rotations needed to align the cone with the
% orbit point and transforms the cone using object R.   
% This if loop calibrates the cone for the 4 quadrants of 2 tangents.
xa = atan(yp/xp);
za = atan(zp/sqrt(xp^2+yp^2));
if xp>0
   xa = xa-pi/2;
else
   xa = xa+pi/2;
end
R = makehgtform('zrotate',xa,'xrotate',za);
set(t,'Matrix',R);

% Performs the same numerical transformation of the duplicate data and
% creates a sew sets of coordinates that match the transformation.
for i = 1:101
    new_first_row(i,:) = (R * [x_temp(1,i);y_temp(1,i);z_temp(1,i);1])';
    new_second_row(i,:) = (R * [x_temp(2,i);y_temp(2,i);z_temp(2,i);1])';
end
xr = new_first_row(:,1)';       % Transformed x data.
xr(2,:) = new_second_row(:,1)';
yr = new_first_row(:,2)';       % Transformed y data.
yr(2,:) = new_second_row(:,2)';
zr = new_first_row(:,3)';       % Transformed z data.
zr(2,:) = new_second_row(:,3)';

I want xr, yr, and zr to be calculated, but don't want any plots to be created from this specific script. I later want to create a different plot using this data. If there are any other ways of doing this, please let me know.

Upvotes: 0

Views: 231

Answers (1)

Adriaan
Adriaan

Reputation: 18177

As Ander Biguri already said, there are probably better ways than to cram a round peg into a square hole.
As to the question itself: figure visibility is controlled through figure('Visible', 'off'), where 'on' is obviously the default. Don't forget to close your figure though:

fig = figure('Visible', 'off'); % Create invisible figure with handle
h = surface(...); % Your plot
% (...) your other processing
close(fig); % Close figure to save RAM

Upvotes: 2

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