Comments and Ratings

Here is the M-file as posted. It contains non-MATLAB code:
%DESIGNING OF A LOG-PERIODIC ANTENNA FOR RECIEVING DD1,DD2 &DD-NEWS CHANNEL
%VHF CHANNELS--
% 2,3,4 -- 54,60,66,72MHz
% 5,6 -- 76,82,88MHz
% 7,8,9,10,11,12,13 -- 172,180,186,192,198,204,210,216 MHz
%UHF CHANNELS
% 14-83 -- 470-890MHz
%1CM=.390625INCH
clc
clear all
disp('DESIGNING OF A LOG-PERIODIC ANTENNA FOR RECIEVING DD1,DD2 &DD-NEWS CHANNEL');
disp(' ');
disp(' ');
float double a;
float double gtl;
float double fbw;
float double bar1;
float double bs1;
float double l1;
float double l2;
float double D1;
int n;
int i;
float double sigma1;
float double lmax;
float double s(100);
float double l(100);
float double d(100);
float double bs;
float double l1;
float double l2;
gtl=0.0;
x=input('Enter the value of lower frequency=');
y=input('Enter value of upper frequency=');
dmax=input('Enter value of largest element diameter(in inches)=');
disp(' ');
disp('Directivity 8dB');
fbw=2*(y-x)/(x+y);
fprintf('Fractional bandwidth =%f \n',fbw);
sigma=.157;
tau=.865;
a=atan((1-tau)/(4*sigma));
fprintf('Angle alpha =%f radian \n',a);
bar=1.1+7.7*(1-.865)^2*cot(a);
bar1=bar/(1000000);
fprintf('Active region bandwidth =%f MHz \n',bar1);
s=y/x;
bs=s*bar;
bs1=bs/1000000;
fprintf('Designed bandwidth =%f MHz \n',bs1);
c=3*10^8;
l1=c/x;
fprintf('Max. wavelength =%f meters\n',l1);
l2=l1*3.2805;
fprintf('Max wavelength =%f feets\n',l2);
L=(l1/4)*(1-(1/bs))*cot(a);
fprintf('TOTAL LENGTH =%f meters\n',L);
N=1+(log(bs)/log(1/tau));
n=round(N);
fprintf('No. of elements is=%f \n',n);
sigma1=sigma/sqrt(tau);
fprintf('Relative mean spacing =%f \n',sigma1);
lmax=l2/2;
fprintf('Max length =%f feet \n',lmax);
za=120*(log(s)-2.25);
fprintf('Average characteristic impedence =%f ohms \n',sigma1);
Rin=50;
V=za/Rin;
VAR=1.2;
zo=VAR*Rin;
s=3/4*cosh(zo/120);
fprintf('Center-to-center spacing of feeder line conducter =%f \n',s);
L(n)=lmax;
d(n)=dmax;
s(n)=s;
for i=n-1:-1:1
    s(i)=s(i+1)*tau;
     L(i)=L(i+1)*tau;
     d(i)=d(i+1)*tau;
     disp(' ');
fprintf('INDIVIDUAL LENGTHS of %d th element is %f meters \n',i,L(i));
fprintf('INDIVIDUAL spacing of %d th element is %f meters \n',i,s(i));
fprintf('INDIVIDUAL dimeter of %d th element is %f meters \n \n',i,d(i));
gtl=gtl+L(i);
end
fprintf('Gross total length req. for all elements is %f meters \n',gtl);
disp(' ');
disp(' ');
disp('THIS PROGRAM IS SUBMITTED BY- ');
  disp(' ANUJ KUMAR TRIPATHI');
  disp(' ELECTRONICS & COMMUNICATION ');
    disp(' THAPAR INSTITUTE OF ENGG. AND TECH. ');

I sent an email directly to the author requesting that they withdraw this submission.

Please, ANUJ TRIPATHI, withdraw your submission... to give an end to this fruitless discussion.

smithOK now we are hopefully getting somewhere.
Why will the jury give the first price to a specific cake. Because it is a "valid" cake (submission guidelines) AND THAT CAKE LOOKS GOOD AND TASTES WELL (as assessed by the jury).
And if you ever wanted to buy a cake, you can use that second assessment to make your choice. However, looking for such a cake will become increasingly more difficult if there are a lot of tastless cakes around ...

Can you see the analogy with the FEX?

BTW, why don't give yourself a proper name?

Interesting, but hopelessly flawed, analogy by xy.

Had this actually been a cake in some local contest, the judges there would have assessed its merits as cake. Had the cake been a lumpy, uncooked mess, the judges would have assessed it as poor. Not every cake entered in a contest wins a blue ribbon.

As reviewers, several people have now stated an honest opinion of this piece of code. It is "poor". xy has as yet never seen fit to justify how this has any merit as matlab code. I'm sorry, but the review system is there for a reason. When xy chooses to show a real name and make a credible argument why this is not a waste of internet bandwidth, I might be willing to debate the issue. For example, xy might have chosen to suggest that a file of this nature should be rated as a 2.

Instead, xy appears to lack the moral courage to even use a real name. Its kind of sad.

Jos said "While the style may be good, the contents can be poor."

The submission guidelines do not place ANY qualifications on "contents", so it is inappropriate to judge submissions on items not known to the submitter.

If you were in a cake baking contest and that contest gave you submission guidelines that included size, shape, amount of frosting, and date due. In response you submitted a cake that met all these submission guidelines. When the judges came along and "reviewed" your submission, they requested that your submission be removed because it did not contain chocolate. No where in the submission guidelines did it say that the cake had to contain chocolate, but you are disqualified because of it. Is that right? I don't think so, but yet that is how the FEX is run. It isn't right.

xy, I do not understand your intention. As a frequent visitor but infrequent participant at the FEX and CSSM, I am glad for the guidance to files given by the reviewers. Misleading ratings, if positive or negative, are just destructive.

And your rating is just far too high for such a poor submission.

Jos is incorrect. This submission does meet ALL submission requirements. Here they are yet again:
"*Contact information must be complete and accurate. This information is displayed on the web site and is used by customers and The MathWorks to communicate with you.
* The Submission must not directly compete with products offered by The MathWorks or its partners.
* The Submission must not violate or infringe on any patent, copyright, or other intellectual property right of any other person.
* The Submission must be offered free of charge.
* The Submission must not be offensive.
* The Submission must not be malicious or destructive in nature.
* The title, abstract, description, requirements, and other information must be accurately completed." (This last item does not refer to the submitted M-file, but rather to the information appearing on the FEX page for the submission.)

"overwritting my variables, clearing my command window, ..." are NOT part of the submission guidelines. Please Jos, read the submission guidelines for the FEX, not those of some other group. "functionality", "no help, no comments", etc. are NOT part of the submission guidelines, so do not say that they are.