Why is errorbar plotting returning error when all inputs are doubles?

Hello,

I am attempting to plot a years worth of data in hour incriments, with the time on the x axis and the units of my data on y. I have a value of error for each hour point, and the code for the data plot is

errorbar(datetime(data(:,1:6)),data(:,7), data(:,8))

datetick('x','mmm')

Where the data looks like this

And it gives the error

Error using errorbar (line 76)

Input arguments must be numeric or objects which can be converted to double.

I am very confused as the data is in a double, and it has no problem plotting without the errorbars if I just use the code plot(datetime(data(:,1:6)),data(:,7)).

What can I do to make this plot with the error bars? I have tried assigning them as x, y, err outside of the function, but that also didn't work.

Thank you for any help.

[the cyclist]

Can you upload the data, instead of an image of the data? We can't work with an image.

[Phoebe Harris]

Oh sure! Sorry, I didn't consider that.

Hopefully this will work

Answer 1

[Sulaymon Eshkabilov]

Hi,

You have overlooked the conversion into date.

Here is the corrected solution code:

clc; clearvars
D=xlsread('datafile.xlsx');
Date1=datenum(D(:,1:6));
errorbar(Date1,D(:,7), D(:,8))
datetick('x','mmm')

Probably, you may need to compute the averages and then error plot. Or go over by monthly.

As is, the plot contains way too many data that is faily difficult to see the process dynamics.

Good luck.

[Phoebe Harris]

Thank you! I didn't realise that datetick wouldn't function as I wanted