价值观在不应该出现的地方停止

Question

我的图形输入了365（天），但是在某处停止制作图形 这是我的图形结果： My Graphic

在这里，我应该得到的原始图形： Original Graphic

这是我的完整代码：

days = 1:365;
%Formulas of the Equation of Time
earth_tilt = -7.655*sin(2*pi*days/365)
elliptical_orbit = 9.873*sin(4*pi*days/365+3.588)
time_variation = earth_tilt + elliptical_orbit
plot(days,earth_tilt,'g--')
hold on
plot(days,elliptical_orbit,'r-.')
plot(days,time_variation,'black')
ax = gca;
ax.XAxisLocation = 'origin';
ax.XAxis.TickLabels = {'Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'}';
ax.XAxis.Limits = [0 500];
title('Time Variation')
xlabel('Day of The Year','FontWeight','bold')
ylabel('Minutes','FontWeight','bold')
legend({'Earth Elliptic Orbit','Tilt of Earth Axis','Orbit+Tilt'},'FontSize',14)
% Location information of legend
set(legend, 'Location', 'NorthWest')

Answer 1

ax.XAxis.TickLabels = {'Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'}';

标签名称已更改，但是没有提及这些标签的显示位置。默认情况下，它们将平均分布在图表（ax.XAxis.Limits = [0 500];的500天中

正确设置刻度位置

ax.XAxis.Tick=cumsum([31 28 31 30 31 30 31 31 30 31 30 31])-30;

Answer 2

您正在设置标签 text ，而不是标签 position ，让MATLAB选择希望它们位于的位置。具体来说，您的报价位于：

ax.XAxis.TickValues

ans =

     0    50   100   150   200   250   300   350   400   450   500

与您输入的标签不符。更改这些位置：

days = 1:365;
%Formulas of the Equation of Time
earth_tilt = -7.655*sin(2*pi*days/365)
elliptical_orbit = 9.873*sin(4*pi*days/365+3.588)
time_variation = earth_tilt + elliptical_orbit
plot(days,earth_tilt,'g--')
hold on
plot(days,elliptical_orbit,'r-.')
plot(days,time_variation,'black')
ax = gca;
ax.XAxisLocation = 'origin';
ax.XAxis.TickLabels = {'Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'}';
ax.XAxis.Limits = [0 500];

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
ax.XAxis.TickValues=[0:30:360]; % yeah its not 100% right, change it to @Brice's answer data.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

title('Time Variation')
xlabel('Day of The Year','FontWeight','bold')
ylabel('Minutes','FontWeight','bold')
legend({'Earth Elliptic Orbit','Tilt of Earth Axis','Orbit+Tilt'},'FontSize',14)
% Location information of legend
set(legend, 'Location', 'NorthWest')

您需要将TickValues更改为正确的天数（我假设每个月有20天），并可能更改为Xaxis的限制，为避免数据后出现不必要的空白，我将其留给读者，因为我认为询问者有500个。