Trying to add Minor Ticks and grid with duration data

Question

Kyle Cox 2022-1-27

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编辑： Kyle Cox 2022-1-27

I am trying to add minor ticks and grids to some data I am plotting. I have created a simple example below. When I use duration, I don't get any Minor Ticks or Grid but if I plot x_seconds directly then the Minor Ticks and Grid works just fine. For my application, the time format given by duration is much prefered for the plot vs the raw seconds. I mainly use R2017b but same thing happens in R2018b.

Edit: I realize now that I have been using my plots mostly for data exploration and that having the grid and ticks set automatically such as when I zoom is important. I may have to give up using duration on my plots.

% simple data example

x_seconds = 5000:0.3:5500;

x_duration = duration(0,0,x_seconds);

y = 1:length(x_seconds);

% Using duration

figure

plot(x_duration,y)

ax1 = gca();

ax1.XAxis.MinorTick = 'on';

ax1.XMinorGrid = 'on';

% using raw seconds

figure

plot(x_seconds,y)

ax2 = gca();

ax2.XAxis.MinorTick = 'on';

ax2.XMinorGrid = 'on';

I don't understand what I am doing wrong. Please help, thanks.

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Answer 1

ANKUR KUMAR 2022-1-27

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https://ww2.mathworks.cn/matlabcentral/answers/1637640-trying-to-add-minor-ticks-and-grid-with-duration-data#answer_883280

在 MATLAB Online 中打开

If you want grid line and ticks both in the plot, you can prefer handling ticks direclty on the majorticks. Here is an example of that. You just have to edit the xticks as per your requirement.

Instead of depending of MATLAB to auto put the xticks, I would recommend you to specifiy ticks on your own in the xticks.

x_seconds = 5000:0.3:5500;

x_duration = duration(0,0,x_seconds);

y = 1:length(x_seconds);

% Using duration

figure

plot(x_duration,y)

xticks(x_duration(1:250:end))

grid on

set(gca,'GridLineStyle',':')

figure

x_seconds = 5000:0.3:5500;

x_duration = duration(0,0,x_seconds);

y = 1:length(x_seconds);

% Using duration

for i = 1:4

subplot(2,2, i)

plot(x_duration,y)

xticks(x_duration(1:150*i:end))

grid on

set(gca,'GridLineStyle',':')

xtickangle(45)

end

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Kyle Cox 2022-1-27

That is a pretty good option, thanks. Although, I am realizing now that I have mostly been using my plots for data exploration so having the ticks and grid lines automatically change is the feature I really want. I may have to settle for plotting against raw seconds.

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Trying to add Minor Ticks and grid with duration data

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