How to change my x axis value

140 次查看（过去 30 天）
Nurul Ain Basirah Zakaria
评论： Nurul Ain Basirah Zakaria 2021-1-15
Hello. Is it possible for me to change my x axis value? My data is from 1982-2017. I plot and came out like this:
but I want it to be like this:
The x-axis showing the year.
Thank you in advance!

请先登录，再回答此问题。

采纳的回答

the cyclist
the cyclist 2021-1-14
编辑：the cyclist 2021-1-14
It would be helpful if you posted your data, so we know exactly how it is stored (e.g. do you just have the years stored as numeric values, or do you have whole dates stored as datetime type?).
But, it looks like you did
plot(y)
which will default to plotting x = 1:N, where N is the number of data points in y.
Instead, you should
plot(date_data,y)
  12 个评论
显示 10更早的评论
the cyclist
the cyclist 2021-1-14
Assuming that the dates generated like that do correspond to the dates you want to associate with your data, then yes it works:
load 'SPI3 PBS.mat'
t1 = datetime(1982,01,01);
t2 = datetime(2017,12,31);
date_months=t1:calmonths(1):t2;
plot(date_months,SPI3)
I would recommend against using date as the name of your variable, since date() is the name of a MATLAB function.

请先登录，再进行评论。

更多回答（1 个）

WalterWhite
WalterWhite 2021-1-14
xticks(1980:5:2020)
  5 个评论
显示 3更早的评论
WalterWhite
WalterWhite 2021-1-14
xticks(1980:5:2020) %try pasing this code under your plot(spi3)
the cyclist
the cyclist 2021-1-14
编辑：the cyclist 2021-1-14
To be clear about what I was saying, if OP has plotted with one variable, like this
rng default
figure
plot(rand(1,9))
they will get the plot
and this plot will not be fixed by adding
xticks(1980:5:2020)
which will create ticks at x-axis positions 1980:5:2020, and the plot will then look like this
because the data are at 1:9, and the ticks are far away to the right at 1980-2020. Instead, they could use
xticklabels(1980:5:2020)
to change the labels of the existing tick marks at 1:9 into 1980:5:2020, yielding
But I think it is fundamentally better to actually plot the date data, as suggested in my solution.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Annotations 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by