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Locking figure axis for quiver loop

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Alexandr Lozak
Alexandr Lozak el 19 de Ag. de 2019
Editada: Alexandr Lozak el 19 de Ag. de 2019
I have code for figure with superimposition of temperature image and quiver plot in loop.
But it image shifts every loop if side arrows exceed length of 1 pixel. How i can lock image or scale arrows?
[x,y]=meshgrid(1:1:31,1:1:38);
k=4997;
cnt=0;
heat_conductivity=28;
d=4;
for i=1:k
[dTdx,dTdy] = gradient(V(:,:,i));
u(:,:,i) = -heat_conductivity*dTdx;
v(:,:,i) = -heat_conductivity*dTdy;
end
f=figure('Renderer', 'painters', 'Position', [10 10 600 620]);
ax=gca;
ax.XLim = [1 38];
ax.YLim = [1 31];
%f.WindowState='maximized';
for i=1:k
%figure
imagesc(V(:,:,i));
axis tight
hold on
q=quiver(x,y,v(:,:,i),u(:,:,i))
%q.AutoScale='on';
q.AutoScaleFactor=0.9;
q.ShowArrowHead='on';
%q.MaxHeadSize= 1;
q.AlignVertexCenters='on';
q.LineWidth=0.5;
q.MaxHeadSize=1;
q.Color='black';
%axis tight
colormap jet
colorbar
caxis([26 35])
cnt=i;
title(cnt);
pause (0.1)
clf;
end
untitled.png
untitled2.png
  4 comentarios
Alexandr Lozak
Alexandr Lozak el 19 de Ag. de 2019
Editada: Alexandr Lozak el 19 de Ag. de 2019
Problem was with quiver itself and arrows. Thats why adding X,Y limits after quiver function helped. Hope it will be helpful for others
f=figure('Renderer', 'painters', 'Position', [10 10 600 620]);
% ax=gca;
% ax.XLimMode='manual';
% ax.YLimMode='manual';
% ax.XLim = [1 38];
% ax.YLim = [1 31];
%f.WindowState='maximized';
for i=1:k
%figure
imagesc(V(:,:,i));
axis tight
hold on
q=quiver(x,y,v(:,:,i),u(:,:,i))
%q.AutoScale='on';
q.AutoScaleFactor=0.9;
q.ShowArrowHead='on';
%q.MaxHeadSize= 1;
q.AlignVertexCenters='on';
q.LineWidth=0.5;
q.MaxHeadSize=1;
q.Color='black';
%axis tight
xlim manual
ylim manual
axis ([1 31 1 38 ])
colormap jet
colorbar
caxis([26 35])
cnt=i;
title(cnt);
pause (0.1)
clf;
end
Adam
Adam el 19 de Ag. de 2019
axis tight
in the loop is what caused the original behaviour, by fitting tightly around each new set of quivers

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