I'm trying to load in data from a text file. The first two rows are headers, following the headers the first two columns are date and time. The rest of the columns are floats.
data should have 11 columns, however, whos returns that size is only 1x3
fid = fopen('allunderway.txt', 'rt');
data = textscan(fid, '%{M/dd/yyyy}D %{HH:mm:ss}D %4.2f %2.4f %2.5f %2.4f %2.4f %2.2f %4.2f %3.1f %1.4f', 'HeaderLines', 2, 'CollectOutput', true);
fclose(fid);
whos data
date = data{1};
time = data{2};
wnd_td = data{10};
wnd_ts = data{11};

 Akzeptierte Antwort

Jeremy Hughes
Jeremy Hughes am 30 Mai 2018

1 Stimme

You're adding 'CollectOutput' which is concatenating all the numeric columns into one. If you remove that, you should get the number of columns you expect.

Weitere Antworten (1)

KSSV
KSSV am 30 Mai 2018

0 Stimmen

Try this:
fid = fopen('allunderway.txt', 'rt');
data = textscan(fid, '%{M/dd/yyyy}D %{HH:mm:ss}D %4.2f %2.4f %2.5f %2.4f %2.4f %2.2f %4.2f %3.1f %1.4f', 'HeaderLines', 2, 'Delimiter','\n', 'CollectOutput', true);
fclose(fid);
whos data
date = data{1};
time = data{2};

2 Kommentare

I tried your version and got an error message for the dates.
Error using textscan Unable to read the DATETIME data with the format 'M/dd/yyyy'. If the data is not a time, use %q to get text data.
Error in windconversions (line 21) data = textscan(fid, '%{M/dd/yyyy}D %{HH:mm:ss}D %4.2f %2.4f %2.5f %2.4f %2.4f %2.2f %4.2f %3.1f %1.4f', 'HeaderLines', 2, 'Delimiter','\n', 'CollectOutput', true);
I tried changing both to %q as recommended and the error went away but the matrix dimensions for data were still only 1x2

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