plotting a temperature graph over a data of years

i have data of about 18 years i want to make a temperature graph versus time.

my matlab code for doing this is

temp=dataa(:,2)

time=dataa(:,1)

plot(time,temp)

i am getting very complex graph which is hard to interpret anything so i need assistance in doing this work. the file having the years data with temperature is attached.

[KALYAN ACHARJYA]

Look for bar plot, which may be easier to interpret. x axis time and y axis temp. Though the data set is quite long, is it date wise/ min / hour?

[nouman shehzad]

it's year wise data. kindly click the link to get an idea that how i want to see my graph

https://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&ved=2ahUKEwiv0Ij36v3iAhWtxYUKHfpOBS4QjRx6BAgBEAU&url=https%3A%2F%2Fearthobservatory.nasa.gov%2Ffeatures%2FGlobalWarming%2Fpage2.php&psig=AOvVaw1V6cRsOMk9NfxmZ8itpU_v&ust=1561318534565337

Answer 1

[Fikret Dogru]

Could you show the plot to give you feedback?

[nouman shehzad]

here is the graph which i am getting. graph is attached looking for the help brother

[nouman shehzad]

the data is is arranged yearwise and we have to show the plot temperature vs year. can u please tell me by writing the code that how we can plot it.?

[Fikret Dogru]

Thanx for showing the plot. First you should convert your date using date2num then

Dates for example 20160702 means 2016 year 07 month 02 day

Dates=str2num("your dates");

yy=round(Dates./10000);

mm=round((Dates-yy.*10000)./100);

dd=round((Dates-yy.*10000-mm.*100))

xti=datetime(yy,mm,dd);xtime=datenum(xti);;

h1=plot(xtime,"your variable (temperatures)");

hold on

datetick('x','mmm','keepticks')

mmm gives only months with 3 character if you want to yearly make it

datetick('x','yyyy','keepticks') there are several options can u find in the help yyyy-MMM or etc.

Hope it helps u.