minor grid in consecutive plots

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G A
G A 2021-4-9
评论： G A 2021-4-10
If I run the following code (within a script or command window) several times, then the minor grids will be 'on' only every other time. Why?
x=-2*pi:0.1:2*pi;
y=sin(x);
figure(1)
hold on
plot(x,y);
grid on
grid minor

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Walter Roberson
Walter Roberson 2021-4-9
grid minor toggles the visibility of the minor grid lines. Minor grid lines lie between the tick marks. Not all types of charts support minor grid lines.
https://www.mathworks.com/help/matlab/ref/grid.html
You probably want
set(gca, 'XMinorGrid', 'on', 'YMinorGrid', 'on')
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Walter Roberson
Walter Roberson 2021-4-10
grid minor toggles the visibility of the minor grid lines
https://www.mathworks.com/help/matlab/ref/grid.html
So the first time you call it, it turned it from default off to on. The second time you call it, it turns it off. The third time you call it, it turns it on...

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