0 个投票

Hello all I am trying to plot data from the attached test.mat file. If I just plot the data alone using the command plot(raw_summer_0mean), I got a nice curve shown below, but when I plot it with the time(attached below) , the curve is distorted. Any suggestions. Thanks in advance.
raw_summer_0mean=raw_summer-mean(raw_summer);
figure;plot(x_data_summer,raw_summer_0mean)
line([1 length(raw_summer_0mean)],[std(raw_summer_0mean) std(raw_summer_0mean)],'Color','r','LineWidth',1,'LineStyle','--')
line([1 length(raw_summer_0mean)],-[std(raw_summer_0mean) std(raw_summer_0mean)],'Color','r','LineWidth',1,'LineStyle','--')
text(x_data_summer(3),std(raw_summer_0mean)+1,['\sigma ',num2str(std(raw_summer_0mean))])
xlabel('Time')
ylabel('Precipitation Raw')
axis([min(x_data_summer) max(x_data_summer) min(raw_summer_0mean) max(raw_summer_0mean) ])
set(gca,'XTick',x_data_summer(1):diff(x_data_summer):x_data_summer(length(x_data_summer)))
datetick('x','yyyymmm','keeplimits', 'keepticks')
rotateXlabels(gca,90)

2 个评论
显示 无 隐藏 无

Star Strider
Star Strider 2014-6-2
Suggestions to do what?
ahmed shaaban
ahmed shaaban 2014-6-2
The two curves suppose to be identical, I need suggestions to have get the same curve when I put time on x axes.

请先登录，再进行评论。

请先登录，再回答此问题。

 采纳的回答

Chad Greene
Chad Greene 2014-6-2

1 个投票

Your time vector x_data_summer is not evenly spaced. When you only plot the raw_summer_0mean data, Matlab is assuming the x axis is evenly spaced. But your date numbers skip the winters.

5 个评论
显示 3更早的评论 隐藏 3更早的评论

Chad Greene
Chad Greene 2014-6-2
You don't have data in the winter, so when you reference your raw_summer_0mean data to its corresponding dates, Matlab will connect the last summer measurement of one year to the first summer measurement of the next year with a straight line.
ahmed shaaban
ahmed shaaban 2014-6-2
ya, that is right, the data is only for June, July, august, September. Is there is any way to just enforce matlab to plot only the selected months without making such connections.
Chad Greene
Chad Greene 2014-6-2
You mean like this?
[y,m,d] = datevec(x_data_summer);
for k = y(1):y(end)
plot(x_data_summer(y==k),raw_summer_0mean(y==k),'b*-');
hold on;
end
datetick
ahmed shaaban
ahmed shaaban 2014-6-3
Yes,I try that and it give me the following figure. is there a way that I can enforce the datetick to be only in summer (July for example). The datetick here vary between all months Thanks alot
re. Thanks a lot.

请先登录，再进行评论。

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 2-D and 3-D Plots 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by