in reply to Linking Matlab to process data for Personal Web Server

From what I can see the standalone.html is a static html page that displays an input box and a button thus

<HTML>
<BODY>
<FORM ACTION="/cgi-bin/mycgimagic.exe">
<P>Please specify the size:
<INPUT NAME="size" SIZE="5"><BR>
<INPUT TYPE="SUBMIT" VALUE="Go!">
</FORM>
</BODY>
</HTML>

[download]

When you press the button on the page, the request sent to the webserver is to execute the program /cgi-bin/mycgimagic.exe which is the compiled version of mycgimagic.m.

Using the size parameter extracted from the environment variable QUERY_STRING, the program computes the magic square and the response received by your browser is an html page created using the fprint(1,text) statements withing the program starting with this one

fprintf(1,'Content-type: text/html\n');

and later these 

function createTable(M)
s = size(M);
fprintf(1,'<table border = "2">');
for i=1:s(1)
    fprintf(1,' <tr>');
    for j=1:s(2)
        fprintf(1,['  <td>',num2str(M(i,j),'%4.2f'),'</td>']);
    end
    fprintf(1,' </tr>');
end

[download]

hope that helps a bit

poj

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Re^2: Linking Matlab to process data for Personal Web Server
by jyws89 (Initiate) on Dec 17, 2010 at 17:21 UTC

    Thx for the reply and sorry for being late in replying back, i admit that i'm stupid enough that I actually didn't open up the mycgimagic.m file and have a look to it's content.

    Anyway, I am now creating a new algorithm, which is to calculate the square of a number (power of 2) by modeling to the sample m.file given in mycgimagic.m, I somehow stuck halfway and I can't pass back my result entirely, only the header is showing back. here is the coding

    function firstdeploy()
input = (getenv('QUERY_STRING'));
printHeader()

    x=str2double(input.size);
    sqre(x);
    printContent()

printFooter()
end

function sqre = sqre(x)
sqre = (x^2);
end

function printHeader()
fprintf(1,'Content-type: text/html\n');
fprintf(1,'\n');
%Print the HTML response page to STDOUT.
fprintf(1,'<HTML>');
fprintf(1,'<HEAD><TITLE>My Squaring</TITLE></HEAD>');
fprintf(1,'<BODY>');
end

function printContent()
fprintf(1,'<P>This is the square of your input:</P>');
fprintf(1, sqre(x));
end

function printFooter()
fprintf(1,'</BODY>');
fprintf(1,'</HTML>\n');
end

    [download]

    I hope that any guru and masters here can point out my mistakes, I'm still very new to programming, willing to learn more about it. Sorry for any inconvenience caused

[reply]
[d/l]

      You need to process the QUERY_STRING with the function qs2struct

      input = qs2struct(getenv('QUERY_STRING'));

      and to check it is working I would add these lines to printContent()

      fprintf(1,'<P>This is your input:</P>');
fprintf(1, x);

      [download]
      poj
[reply]
[d/l]
[select]

        I check qs2struct with matlab's help and it doesn't seems to be a matlab function...? anyway, i'm studying what actually is the qs2struct function really is. I'll let you know the verdict soon. Thanks for helping out!

[reply]

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