Concatenate Arrays of different size and data types with blanks
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I have a struct with volts, current, temp, and timestamp for each unit. The each measure has it's own timestamp. So my current struct has columns for: "unitID" (single value), "Volts", "voltage timestamp", "current", "Current timestamp", "Temp", "temp timestamp", and "baseline" (single value). I need to concatenate these measurements into an array with the following format:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/488675/image.jpeg)
For reference, the length of each of these will be 50,000+
2 Comments
Walter Roberson
on 14 Jan 2021
If the same timestep appears for multiple measurements, should the data be merged? It does not appear to be in your example -- for example 1:00:00 AM has volts and current and temp but you do not construct a single
a 2 55 12 12:00:00 AM 5
for that.
Anyhow, you will need to convert to your numbers to character vectors to do what you want. Numeric table() cannot display emptiness in entries.
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