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How to plot datetime in garfh?

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Gili Kurtser
Gili Kurtser 2019 年 10 月 19 日
回答済み: Peter Perkins 2019 年 10 月 30 日
hello,
I have a grafh that looks like this.
Insted of the numbers in the X-axis I have a list of dates in the format ot datetime (DD/MM/YYYY)
this list is taken from a table.
I want to name the X-axis by the Dates (for exapmle 1=(datelist(1)) and so on...
how can I do this?
I am Using the contourf function to plot.
Thank you

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darova
darova 2019 年 10 月 19 日
Did you tried this?
set(gca,'YTickLabel',[1 2 3])

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回答 (2 件)

Payas Bahade
Payas Bahade 2019 年 10 月 22 日
Hi Gili,
Function xticklabels’ can be used to change the x-axis labels. For that labels needs to be specified as a string array eg. {‘dd/mm/yyyy’,‘dd/mm/yyyy’}. If your list of dates is not in string array format, you can use function ‘char’ to convert your list into string array.
Following sample code illustrates use of ‘xticklabels’:
A={'22/01/2019','23/01/2019','24/01/2019','25/01/2019','26/01/2019'};% string array of dates
x=[1 2 3 4 5];% x-axis data
y=[4 7 11 8 16];% y-axis data
plot(x,y); % plotting x&y
xticks([1 2 3 4 5]); % specifying x-axis data whose labels needs to be displayed
xticklabels(A);% changing x-axis labels to dates stored in variable ‘A’
For more details please refer to the following documentation of ‘xticklabels’: https://www.mathworks.com/help/matlab/ref/xticklabels.html?s_tid=doc_ta#bvaeark-1
HTH!

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Peter Perkins
Peter Perkins 2019 年 10 月 30 日
Gili, you say datetime and table, so I'm going to assume you are using those datatypes. contour does not currently support datetimes, but it should be straight-forward to use an integer vector to define that axis of the mesh, and then use something like Payas' suggestion, using
timestamps = string(myTable.MyTimes)
as the text tick labels.

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