I need help with converting hourly data to daily summation inside a cell

Dear all,

I have a cell that contains hourly data of precipitation for the period 1987-2016. I want to convert these hourly data to the daily sum. I tried doing this using timetable and then retime,

daily_precip = cellfun(@(x) table2timetable(x,'RowTime','date'), example, 'uniformoutput', false);
output = retime(daily_precip,'daily','sum');

but I got an error.

Error in @(x)table2timetable(x,'RowTime','date')

So how to convert my hourly data to the daily sum for all the three tables inside the cell?

I attached my cell (namely example).

Thank you

Answer 1

[Yazan]

Note that the data type in the column date is char, not datetime. Try the following:

clc, clear

load('example.mat');

data = cell(size(example));
for ncell=1:length(example)
    data{ncell} = timetable(datetime(example{ncell}.date, 'Format', 'dd-MMM-yyyy HH:mm:ss'), example{ncell}.precip);
end

daily_precip = cellfun(@(x) retime(x, 'daily', 'sum'), data, 'UniformOutput', false);

[BN]

Thank you so much