How to plot gridded data

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Lemea Akara
Lemea Akara 2021-6-29
评论： Walter Roberson 2021-7-3
please help, I used the retime function to change my gridded temperature data from daily to yearly. I tried plotting the data using pcolor but got the error (color data input must be a matrix) How can I plot this data?
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Walter Roberson
Walter Roberson 2021-6-29
Your dt from above is 1 element longer than 16435. datetime('1-jan-2015')-datetime(1970,1,1) is 16436 days. You lost a day somewhere ??
Lemea Akara
Lemea Akara 2021-6-29
Ohk, it is 16436, that was a typo error. Thank you @walter, I will try the code you sent and surely give a feedback on it.

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Walter Roberson
Walter Roberson 2021-6-29
Ran in:
dt=(datetime(1970,01,01) :datetime(2014,12,31))';
temp_data = randi(9, 16436,900);
T = timetable (dt,temp_data);
yearlytemp = retime(T, 'yearly', 'sum');
yt = yearlytemp{:,1};
p = pcolor(1:size(yt,2), yearlytemp.dt, yt); p.EdgeColor = 'none';
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Lemea Akara
Lemea Akara 2021-7-3
Thank you for all your replies @walter.
I got an error in the third line maskedyearly(BW) = nan;
The error reads; subscripting into table using one subscript is not supported.
Walter Roberson
Walter Roberson 2021-7-3
BW = poly2mask(x, y, size(yearlytemp,1), size(yearlytemp,2))
maskedyearly = yearlytemp{:,1};
maskedyearly(BW) = nan;

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