creating new matrix based on column value

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Benjamin on 5 Nov 2018
Commented: madhan ravi on 5 Nov 2018
I have a data file that is 3 columns (Density, Temp, Pressure)
I generate the data using C++ and it loop through all possible density and temperatures to calculate a pressure. The issue is I want to connect the lines of Density vs. Pressure at a given temp (isotherms). Is there a way to do this in MATLAB? Alternatively, is there a way to create a new matrix that has Density in the first column, and the pressure at a given temp is in column 2, and when temp changes from original matrix, it creates a new column at the next given temp.
The current structure:
Density Temp. Pressure
1 300 1
2 300 1.1
4 300 1.2
1 400 1.05
2 400 1.12
4 400 1.23
So it would take this matrix that I already have and create a new one that looks like this:
Density Pressure(@300 K) Pressure(@400 K) etc...
1 1 1.05 ...
2 1.1 1.12 ...
4 1.2 1.23 ...

Answers (1)

madhan ravi
madhan ravi on 5 Nov 2018
Edited: madhan ravi on 5 Nov 2018
have a look at readtable() and tables()

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