MATLAB: Is there a way to add a single value to every value in a table at once

additiontable

I've got a set of values for the temp in Celsius, and I just need to add 273.15 to every value in the table. The plus sign seems to be throwing off MATLAB, is there a specific way it needs to be written? The best I have so far is TempKelvin = data(:,2)+273; , which is not working.

Best Answer

TempKelvin = data{:,2}+273;

Note that the result will be a numeric vector, not a table.

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MATLAB: Existing table, populate a column with string (receiving errors)

You are close, but you are trying to assign a character vector to a double variable (NaN = not a number). You can see that if you run the command summary(mytable).

You also do not need to put the text into a cell if you use the string data type.

See if you can get this code to work for your needs.

myArray = nan(5,2)
mytable = array2table(myArray);
mytable.Properties.VariableNames = {'colA', 'colB'};
mytable2 = convertvars(mytable,"colB",'string');
mytable2.colA(:) = 459;
mytable2.colB(:) = "words"

You say you have a lot of data. If the variables already exist, you could do something like this:

colA = nan(5,1);
colB = strings(5,1);
mytable = table(colA,colB);
mytable.colA(:) = 459; % just a random number, proof-of-concept that it works
mytable.colB(:) = "words" % this throws errors

MATLAB: Defining multiple arrays at once

[A, B, C] = deal(zeros(5,1));

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Related Solutions

MATLAB: Existing table, populate a column with string (receiving errors)

MATLAB: Defining multiple arrays at once

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