Using string variable names for dot indexing
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Karel Starý
le 7 Mar 2024
Réponse apportée : Star Strider
le 7 Mar 2024
Hello,
I have a list of the varaible names:
varnames = {'rsrp_nr' 'sinr_nr' 'bler_dl_nr' 'bler_ul_nr' 'mcs_dl_nr' 'mcs_ul_nr' 'layers_dl_nr' 'layers_ul_nr' 'tp_pdsch_dl_nr' 'tp_pusch_ul_nr'};
And i would like to use this list to call a rows by the name f.a.:
rr=2
my_files{1,1}.varnames(rr)
I woudl like the code to process this as:
my_files{1,1}.sinr_nr
For now I am getting an error:
Error using tabular/dotParenReference
Unrecognized table variable name 'varnames'.
Thanks!
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Star Strider
le 7 Mar 2024
That approach can work, however it is necessary to put the variable name from the cell array in parentheses —
varnames = {'rsrp_nr' 'sinr_nr' 'bler_dl_nr' 'bler_ul_nr' 'mcs_dl_nr' 'mcs_ul_nr' 'layers_dl_nr' 'layers_ul_nr' 'tp_pdsch_dl_nr' 'tp_pusch_ul_nr'};
Test = array2table(randn(5,numel(varnames)), 'VariableNames',varnames)
rr = 2;
vn = varnames(rr)
GetColumn = Test.(varnames{rr})
That also works if the variable name is not a normal MATLAB variable name (for example containing a space or other special characters).
.
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Rik
le 7 Mar 2024
You're missing parentheses:
varnames = {'rsrp_nr' 'sinr_nr'};
T=table(pi,2*pi,VariableName={'rsrp_nr' 'sinr_nr'})
T.(varnames{2})
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