How to edit grid lines on a 3D plot

Question

Hans123 2020-5-14

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/525533-how-to-edit-grid-lines-on-a-3d-plot

回答： Tommy 2020-5-14

I am trying to change the traditional grid on a MATLAB figure to one that I have calculated according to my data points.

I have a used

[X,Y,Z] = meshgrid(xdim,ydim,zdim);

and using grid on wiil not cause the grid on my 3D plot to have the same divisions.

Could someone point out how I can fix this?

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Hans123 2020-5-14

编辑：Rik 2020-5-14

在 MATLAB Online 中打开

According to https://www.mathworks.com/matlabcentral/answers/95511-in-matlab-is-there-a-way-to-set-the-grid-at-a-spacing-different-from-the-ticks-on-the-axes

Below is a method to do what I am hoping for, but it is not as elegant as I hoped and involves multiple plots that mimic grid lines

x=[20:0.1:80];
y=sin(x);
plot(x,y,'r','Linewidth',2)
ylim([0 4]);
xlim([0 100]);
% gridlines ---------------------------
hold on
g_y=[0:0.1:4]; % user defined grid Y [start:spaces:end]
g_x=[0:2:100]; % user defined grid X [start:spaces:end]
for i=1:length(g_x)
   plot([g_x(i) g_x(i)],[g_y(1) g_y(end)],'k:') %y grid lines
   hold on    
end
for i=1:length(g_y)
   plot([g_x(1) g_x(end)],[g_y(i) g_y(i)],'k:') %x grid lines
   hold on    
end
print(1,'-dpng','-r300','K1') %save plot as png (looks better)

Hans123 2020-5-14

编辑：Rik 2020-5-14

在 MATLAB Online 中打开

for i=1:length(g_x)
   plot3([g_x(i) g_x(i)],[g_y(1) g_y(end)],[g_z(1) g_z(end)],'k') %xz grid lines
   hold on    
end
for i=1:length(g_y)
   plot3([g_x(1) g_x(end)],[g_y(i) g_y(i)],[g_z(1) g_z(end)],'k') %xy grid lines
   hold on    
end
for i=1:length(g_z)
   plot3([g_x(1) g_x(end)],[g_y(1) g_y(end)],[g_z(i) g_z(i)],'k') %zy grid lines
   hold on  
end

Is my fix for a 3D plot, however it dows not work as I expect to. I am trying to get a xz,xy, and, yz plane all to intersect and form a grid

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Answer 1

Tommy 2020-5-14

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/525533-how-to-edit-grid-lines-on-a-3d-plot#answer_432513

在 MATLAB Online 中打开

It seems to me that Dillen.A's answer from your link is pretty elegant.

Adapting that code to work with 3D axes:

f = figure;
ax1 = axes(f);
surf(ax1, peaks(50)); % example plot
grid(ax1, 'off');
axis(ax1, 'tight');
% Second invisible axes:
ax2 = axes('Position',ax1.Position,...
  'Color','none',... 
  'YLim',ax1.YLim,...
  'XLim',ax1.XLim,...
  'ZLim',ax1.ZLim,...
  'TickLength',[0 0],...
  'YTickLabel',[],...
  'XTickLabel',[],...
  'ZTickLabel',[],...
  'View',ax1.View);
% Set the ticks to whatever you want:
ax2.YTick = linspace(ax1.YLim(1),ax1.YLim(2),5);
ax2.XTick = linspace(ax1.XLim(1),ax1.XLim(2),5);
ax2.ZTick = linspace(ax1.ZLim(1),ax1.ZLim(2),5);
% Show the gridlines, link the axes:
grid(ax2, 'on');
linkprop([ax1, ax2],{'CameraUpVector', 'CameraPosition', 'CameraTarget', 'XLim', 'YLim', 'ZLim'});