plotting wind direction V/S time in months (timeseries)

hi friends, i want to plot wind direction data that i have, the data is day wise and have seporate files for each year from 2007- 2013 , i have to plot in one plot....

[Hugo]

I would like to help. Could you please be more specific? When you say "one plot" what do you mean: one figure with one subplot per year, or only one plot, with the vertical axis indicating angles and years simultaneously and the x axis indicating the day?

In principle, you could just plot the time series with time in the x axis (both days and years) and angles in the y axis (0-360, for example). That should be straight-forward. Most of the work will be dedicated to format the x axis labels properly. To that end you should use the properties XTick and XTickLabels, in addition to the command text. You can also make things more complicated, like plotting an arrow for each day, but please first clarify the question.

Best regards

[Mitson Monteiro]

ya ya what you say is the same thing that i want... can u give me the code for it ... thanks

[Mitson Monteiro]

this is an example of the data file i need to plot wind direction v/s yymmdd what are the possible wind direction plots using this data YYYYMMDD HHMM UWND VWND WSPD WDIR 20071118 1200 -3.7 -3.2 4.9 228.7 20071119 1200 -4.5 -4 6 227.8 20071120 1200 -3.6 -4.8 6 217.2 20071121 1200 -4 1.3 4.2 288.1 20071122 1200 -0.9 3.2 3.3 344.8 20071123 1200 1.1 2.8 3 22 20071124 1200 -4.8 1.3 4.9 285.1 20071125 1200 -6.9 -0.5 6.9 265.5 20071126 1200 -5.9 -1.9 6.2 252.1

Answer 1

[Hugo]

Suppose you have the data in a matrix A, each row representing a measurement. The day would be in the first column and the direction of the wind in the sixth column. Then you can do:

plot(A(:,1),A(:,6));
set(gca,'YLim',[0,360]); % Range of angles
set(gca,'XTickLabel',[]);
for ind=1:size(A,1),
text(A(ind,1),-25,num2str(A(ind,1)),'Rotation',45,'VerticalAlignment','middle','HorizontalAlignment','center');
end