Time series plots for a Project: Urgent

I have a Speed and time stamp huge data sets. Speed is in numeric but time stamp is in char. I would like to plot speed vs time stamp. My x axis should have the format 'mm-year'. can I also know how to adjust the intervals on x axis in matlab.

for an example: Speed=[ 20 30 50 60]; Timestamp= [ 12-Dec-2014, 12-Jan-2015, 12-Feb-2015, 12-Mar-2015]; (its in char)

Now I would like to plot Speed vs Time stamp, with my x labels to be in mm-year. How can I do this????

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/29922-why-your-question-is-not-urgent-or-an-emergency

Answer 1

[Star Strider]

This works:

Speed=[ 20 30 50 60];
Timestamp= ['12-Dec-2014';  '12-Jan-2015'; '12-Feb-2015'; '12-Mar-2015'];

dnv = datenum(Timestamp, 'dd-mmm-yyyy');

figure(1)
plot(dnv, Speed)
datetick('x', 'mm-yyyy')
grid

Answer 2

[Peter Perkins]

Another option, if you are using MATLAB R2014b or later, is this:

Speed = [20 30 50 60];
Timestamp = ['12-Dec-2014';  '12-Jan-2015'; '12-Feb-2015'; '12-Mar-2015'];
Time = datetime(Timestamp);
plot(Time,Speed,'DatetimeTickFormat','MMM-yyyy')

This makes a plot that can be panned and zoomed.