Undefined variable using evalin

2 次查看(过去 30 天)
aldburg
aldburg 2018-2-25
评论: aldburg 2018-2-26
I'm trying to create a function where it returns the Temperature as a function of time from my data structure. I'm not sure where my syntax is wrong but I get an undefined varaible "Cure_Kinetics" or class "Cure_Kinetics.neat". In my Workspace, I already have the structure defined and Cure_Kinetics.neat(1).data(1,2) has a value assigned to that index.
function [ T ] = temp_program( data_file )
% Parameter inputs: i for each individual data file
% Grabs initial starting temp and ramp rate from ith data files
% Parameter outputs: Function for temperature
syms t
t_0 = evalin('base', Cure_Kinetics.neat(data_file).data(1,2));
beta = evalin('base', Cure_Kinetics.neat(data_file).ramp_rate(1,1));
T = (t_0 + t*beta);
end

回答(1 个)

Walter Roberson
Walter Roberson 2018-2-26
evalin(ws, expression) executes expression, a character vector or string scalar containing any valid MATLAB® expression using variables in the workspace ws
  3 个评论
Walter Roberson
Walter Roberson 2018-2-26
neat = evalin('base', 'Cure_Kinetics.neat');
t_0 = neat(data_file).data(1,2);
beta = neat(data_file).ramprate(1,1);
syms t
T = t_0 + t * beta;

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