MATLAB: Plot Numeric values vs Date&Time

The text files contains Date&Time and some values. Please look in the attachments. I need to plot Second column with Date&Time. I see that the plot is random not as I needed. Here is the code I wrote:
fid = fopen(filename,'r');
Data = textscan(fid,'%s %s','Headerlines',1,'delimiter','\t');
fclose(fid);
DT = datenum(Data{1});
y = cellfun(@str2double,Data{2});
plot(DT,y,'-*');
datetick('x','dd.mm.yyyy HH:MM');
I cannot even see the right Date and Time on x axis. How can I make it clearly visible to the users? Is there any way to display xtick vertically?

Best Answer

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You can display the XTickLabel values vertically in R2014b using ordinary plot commands. In earlier versions, you have to use the text function with the 'XTick' property governing the positions of the values, then rotate them to whatever angle you need.
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