Presenting this results in a tabulated form?

1 次查看(过去 30 天)
Hi All,
I've written a code. Now, I want to tabulate this results using fprintf in a format that;
1'st column corresponds i(i.e. iteration number 1,2,3...), 2'st column corresponds xl, 3 column xu, 4'th f(xl), 5'th f(xu), 6'th xr, 7'th f(xr) and 8'th column corresponds ea. And also xl,xu,f(xl),f(xu) and f(xr) should have 7 digits after decimal point, xr must have 10 digits after decimal point. and finally ea must include 4 digits after decimal point.
Here is the code;
f=@(x)x^10-1
xl=0
xu=1.3
xr = xu;
es=0.01
fl=f(xl)
fu=f(xu)
iter=0;
iu = 0; il = 0;
while (1)
xrold = xr;
xr = xu - fu*(xl-xu)/(fl-fu);
fr = f(xr);
iter=iter+1;
if xr<0
elseif xr>0
ea=abs((xr-xrold)/xr)*100
end
test = fl*fr
if test<0
xu = xr
fu = f(xu)
iu = 0
il = il+1
if il>=2
fl=fl/2
end
elseif test>0
xl=xr
fl=f(xl)
il=0
iu=iu+1
if iu>=2
fu=fu/2
end
else
ea=0
end
if ea<es
break
end
end
ModFalsePos=xr
I've tried something but find out that some of the variables include only the last value of calculations. for example xl,xr, iter, but i want to present them in a listed form.
I'll appreciate for any help.
Thanks already for your interest!

采纳的回答

Matt Fig
Matt Fig 2012-11-5
编辑:Matt Fig 2012-11-5
Holy lack of semi-colons! Try this:
home
f=@(x)x^10-1;
xl=0;
xu=1.3;
xr = xu;
es=0.01;
fl=f(xl);
fu=f(xu);
iter=0;
iu = 0;
il = 0;
fprintf('\n\n%10s%10s%10s%10s%10s%10s%10s%10s\n',...
'iter','xl','xu','f(xl)','f(xu)','xr','f(xr)','ea')
fprintf([' ',repmat('-',1,74),'\n'])
while 1
xrold = xr;
xr = xu - fu*(xl-xu)/(fl-fu);
fr = f(xr);
iter=iter+1;
if xr<0
elseif xr>0
ea=abs((xr-xrold)/xr)*100;
end
test = fl*fr;
if test<0
xu = xr;
fu = f(xu);
iu = 0;
il = il+1;
if il>=2
fl=fl/2;
end
elseif test>0
xl=xr;
fl=f(xl);
il=0;
iu=iu+1;
if iu>=2
fu=fu/2;
end
else
ea=0;
end
if ea<es
break
end
fprintf('%10.2i%10.2f%10.2f%10.2f%10.2f%10.2f%10.2f%10.2f\n',...
iter,xl,xu,f(xl),f(xu),xr,f(xr),ea)
end
fprintf('\n\n')
ModFalsePos=xr;
  1 个评论
Otto
Otto 2012-11-5
Hi Matt,
I've worked on the code which you sent a bit and I also have a final question. I want to display also the very first, the initial values (00'th values) and the last values (12'th iteration) too. how can I do this? Here is the new code;
home
f=@(x)x^10-1;
xl=0;
xu=1.3;
xr = xu;
es=0.01;
fl=f(xl);
fu=f(xu);
iter=0;
iu = 0;
il = 0;
fprintf('\n\n%10s\t%10s\t%10s\t%10s\t%10s\t%10s\t\t%10s\t%10s\n',...
'iter','xl','xu','f(xl)','f(xu)','xr','f(xr)','ea')
fprintf([' ',repmat('-',1,92),'\n'])
while 1
xrold = xr;
xr = xu - fu*(xl-xu)/(fl-fu);
fr = f(xr);
iter=iter+1;
if xr<0
elseif xr>0
ea=abs((xr-xrold)/xr)*100;
end
test = fl*fr;
if test<0
xu = xr;
fu = f(xu);
iu = 0;
il = il+1;
if il>=2
fl=fl/2;
end
elseif test>0
xl=xr;
fl=f(xl);
il=0;
iu=iu+1;
if iu>=2
fu=fu/2;
end
else
ea=0;
end
if ea<es
break
end
fprintf('%10.2i\t%10.7f\t%10.7f\t%10.7f\t%10.7f\t%10.10f\t%10.7f\t%10.4f\t\n',...
iter,xl,xu,f(xl),f(xu),xr,f(xr),ea)
end
fprintf('\n\n')
ModFalsePos=xr;
Thank you so much for your help!

请先登录,再进行评论。

更多回答(1 个)

Dianne Dampil
Dianne Dampil 2014-2-25
can someone help me tabulate this?

类别

Help CenterFile Exchange 中查找有关 Write Unit Tests 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by