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Plot date labels in x-axis

16 次查看（过去 30 天）
hmhuang
hmhuang 2021-9-9
回答： Walter Roberson 2021-9-9
I have a plot with dates in form of mm/dd as x-axis data. Now I have
xData = ["01/22" "01/23" "01/24" "01/25" "01/26" "01/27" "01/28" "01/29"]
which is a string array of size 1 x 8.
How do I plot with
yData = [557 655 941 1433 2118 2927 5578 6167]
by using something like
plot(xData, yData)
with ["01/22" "01/23" "01/24" "01/25" "01/26" "01/27" "01/28" "01/29"] as the x-axis tick labels?
Currently I got the error messages "Error using plot.
Not enough input arguments." when running plot(xData, yData) as above, which I don't know what it exactly means.

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采纳的回答

Walter Roberson
Walter Roberson 2021-9-9
Ran in:
xData = ["01/22" "01/23" "01/24" "01/25" "01/26" "01/27" "01/28" "01/29"]
xData = 1×8 string array
"01/22" "01/23" "01/24" "01/25" "01/26" "01/27" "01/28" "01/29"
yData = [557 655 941 1433 2118 2927 5578 6167]
yData = 1×8
557 655 941 1433 2118 2927 5578 6167
x = datetime(xData, 'inputFormat', 'MM/dd', 'Format', 'MM/dd')
x = 1×8 datetime array
01/22 01/23 01/24 01/25 01/26 01/27 01/28 01/29
plot(x, yData)

更多回答（1 个）

Chunru
Chunru 2021-9-9
Ran in:
xData = ["01/22" "01/23" "01/24" "01/25" "01/26" "01/27" "01/28" "01/29"]
xData = 1×8 string array
"01/22" "01/23" "01/24" "01/25" "01/26" "01/27" "01/28" "01/29"
yData = [557 655 941 1433 2118 2927 5578 6167]
yData = 1×8
557 655 941 1433 2118 2927 5578 6167
% Convert the string to datetime
x = datetime(xData, 'InputFormat', 'MM/dd')
x = 1×8 datetime array
22-Jan-2021 23-Jan-2021 24-Jan-2021 25-Jan-2021 26-Jan-2021 27-Jan-2021 28-Jan-2021 29-Jan-2021
plot(x, yData)
datetick('x', 'mm/dd') % note the different case for month

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