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Create 100 random particles(all the same size) in an empty plot with dimensions (x-axis from -16 to 16) and (y-axis from -16 to 16) and (angle from 0 to 2*pi)
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Paul Hoffrichter
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Create 100 random particles(all the same size) distributed uniformly in an empty plot with dimensions (x-axis from -16 to 16) and (y-axis from -16 to 16) and (angle from 0 to 2*pi). I must avoid the furniture or the obstacles in my map so my map function as below:
xw=-16; xe=16; ys=-16; yn=16; %map dimensions, west, east, south, north
mrx=0.05; mry=0.05; % map resolution {x,y}
[xm ym]=meshgrid(xw:mrx:xe,ys:mry:yn);
m=0*xm.*ym; % initialize the map m
for i=1:size(xm,2)
for j=1:size(ym,1)
r=sqrt(xm(1,i)^2+ym(j,1)^2);
ang=atan2(ym(j,1),xm(1,i))+pi;
if 9<=r && r<=10 && (pi/15<=ang && ang<=29*pi/15)
m(j,i)=1;
elseif 6<=r && r<=7 && ~(pi-pi/6<=ang && ang<=pi+pi/6)
m(j,i)=1;
elseif -14<=xm(1,i) && xm(1,i)<-9 && -2.8<=ym(j,1) && ym(j,1)<=-1.8
m(j,i)=1;
elseif -11<=xm(1,i) && xm(1,i)<-9 && 1.8<=ym(j,1) && ym(j,1)<=2.8
m(j,i)=1;
elseif -14<=xm(1,i) && xm(1,i)<-13 && -2.8<=ym(j,1) && ym(j,1)<=14
m(j,i)=1;
elseif -11<=xm(1,i) && xm(1,i)<-10 && 2.8<=ym(j,1) && ym(j,1)<=11
m(j,i)=1;
elseif -14<=xm(1,i) && xm(1,i)<14 && 14<=ym(j,1) && ym(j,1)<=15
m(j,i)=1;
elseif -11<=xm(1,i) && xm(1,i)<11 && 11<=ym(j,1) && ym(j,1)<=12
m(j,i)=1;
elseif 14<=xm(1,i) && xm(1,i)<15 && -15<=ym(j,1) && ym(j,1)<=15
m(j,i)=1;
elseif -5<=xm(1,i) && xm(1,i)<14 && -15<=ym(j,1) && ym(j,1)<=-14
m(j,i)=1;
elseif 10<=r && r<=16 && 0.95*pi/3.5<=ang && ang<=1.05*pi/3.5
m(j,i)=1;
elseif xm(1,i)<0.98*xw || 0.98*xe<xm(1,i) || ym(j,1)<0.98*ys || 0.98*yn<ym(j,1) % Boundaries
m(j,i)=1;
end
end
end
mesh(xm,ym,m); axis image; view(0, 90); %xlabel('x'); ylabel('y');
11 commentaires
Rik
le 28 Avr 2021
What issues are you having in implementing that? Do you have issues generating random numbers? Or detecting if the points are invalid?
Walter Roberson
le 28 Avr 2021
And no one helped me till now.
Then Paul and I are "no one" ???
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