how do i use the values read by the eval function in other formulas?

2 views (last 30 days)
prompt = {'Enter the forces(kN): '};
title = 'Environmental forces';
answer = inputdlg(prompt,title);
f = str2num(answer{:});
for ii=1:numel(f)
eval(sprintf('f%d = %f\n',ii,f(ii)))
end
prompt1 = {'Enter the respective angles: '};
title1 = 'Angle w.r.t x-axis';
answer1 = inputdlg(prompt1, title1);
a = str2num(answer1{:});
for jj=1:numel(a)
eval(sprintf('a%d = %f\n',jj,a(jj)))
end
The code above would read the forces and their respective angles and assign the variables automatically. I want to find the horizontal component. i.e. f*cos(a).. How do i do it?

Accepted Answer

rifat
rifat on 27 May 2014
prompt = {'Enter the forces(kN): '};
title = 'Environmental forces';
answer = inputdlg(prompt,title);
f = str2num(answer{:});
for ii=1:numel(f)
eval(sprintf('f%d = %f\n',ii,f(ii)))
end
prompt1 = {'Enter the respective angles: '};
title1 = 'Angle w.r.t x-axis';
answer1 = inputdlg(prompt1, title1);
a = str2num(answer1{:});
for jj=1:numel(a)
eval(sprintf('a%d = %f\n',jj,a(jj)))
end
disp('shows the f*cos(a)');
for jj=1:numel(a)
string=['f(jj)*cos(a(jj))'];
eval(string)
end
  1 Comment
DIJESH
DIJESH on 27 May 2014
can u please explain how to add the values which is evaluated at the end? i mean wat if i have to add the all the values in the variable 'string'?

Sign in to comment.

More Answers (0)

Categories

Find more on Function Handles in Help Center and File Exchange

Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!