Hello,
I am trying to figure out the duration between one day's survey begin time
(e.g., 7:13:45) and end time (e.g., 9:39:53) in an attribute table of a line
shape file. It has just two attributes begin and end. But $lengh returns an
error message and cannot figure out the duration. I suspect that the fields are
not in proper format. So, I try to update the fields with
to_time("begin")
Then, it says Eval Error: Cannot convert '7:13:45' to Time.
What is a remedy? The “begin” and “end” are in string.
Best wishes,
Reiko Matsuda Goodwin
Comoé Monkey Project
Guenon Conservation Community
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