cantera/interfaces/matlab/toolbox/@ThermoPhase/elementIndex.m

32 lines
1,007 B
Matlab

function k = elementIndex(tp, name)
% ELEMENTINDEX - The element index of the element with name
% 'name'.
%
% The index is an integer assigned to each element in sequence as it
% is read in from the input file.
%
% If name is a single string, the return value will be a integer
% containing the corresponding index. If it is an cell array of
% strings, the output will be an array of the same shape
% containing the indices.
%
% NOTE: In keeping with the conventions used by Matlab, this method
% returns 1 for the first element. In contrast, the corresponding
% method elementIndex in the Cantera C++ and Python interfaces
% returns 0 for the first element, 1 for the second one, etc.
%
% ic = elementIndex(gas, 'C');
% ih = elementIndex(gas, 'H');
%
if iscell(name)
[m, n] = size(name);
k = zeros(m, n);
for i = 1:m
for j = 1:n
k(i,j) = phase_get(tp.tp_id, 13, name{i,j});
end
end
else
k = phase_get(tp.tp_id, 13, name);
end