How can I convert a dataset of numbers into a dataset of logarithms of these numbers
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Panty
el 2 de Jul. de 2014
Comentada: Star Strider
el 5 de Jul. de 2014
Hi
I have imported an Excel dataset of real-time GDP. Which is a dataset of numbers in a triangular format.
So I want to convert this dataset into logs of these numbers. Is there any fast way??
Many thanks
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Star Strider
el 2 de Jul. de 2014
You need to load the dataset into the MATLAB workspace (use xlsread), then simply use the logarithm function of your choice on the entire dataset. Your options are: log (Napierian logarithms), log2 (base 2 logarithms), or log10 (base 10 logarithms). Then save to the file type of your choice. (I suggest a ‘.mat’ file,)
For example:
DataSet = randi(10, 5, 3)
LogDataSet = log10(DataSet)
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Star Strider
el 5 de Jul. de 2014
My pleasure!
The dataset class may be very useful in some situations, but it has serious limitations with respect to doing the sort of operation you want to do. The table class is also a core MATLAB set, and so likely portable amongst a number of different applications. I didn’t try table with your data, but I’ll give it a go if you have problems with it in your application.
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