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Homepages on Mathlab
So, you wanna to stake your claim on the Web, huh?
Well, then, here is a list of things you need to do:
- First, you must
create a directory called "www", in your
home
directory. This is where you should put all the information you want
to make available. The
URL for this
new page will be
http://www.mathlab.sunysb.edu/~username, where
username is your login id on mathlab.
- Next, you must make sure the the directory is
world readable.
- Then, you should a create a file in the "www" directory called
"index.html". This is the file that people will see when they come to
your homepage.
Unless you already know how to write
HTML, you probably
should read this
primer
for producing documents in HTML.
- Remember that everything in the "www" directory must be world readable.
- The content and language of your pages should comply with standards
of respect and protection for persons and property as described in the
University Student Conduct Code.
- The night after you create the "www" directory, your name will
automatically be added to the list of users with
home pages on mathlab.
WWW Digital Clock!
You may refer to the program from your web page as:
<img src="/cgi-bin/Dgclock.cgi?ft=9|fr=69|fg=139|fb=116"
align=absmiddle alt="**:**"> Please give close attention to
the parameters after the ? mark. Theexplanation for these parameters are
given below: ft=9 ft means frame thickness. 9 is the thinkness
in pixels. The clock will be wrapped with a 3D frame of thickness 9.
Use any value greater than 1, however for nice 3D effect use a
value >= 6. fr=69 fr is the red component of the frame color.
It can be any value between 0 and 255. fg=139 fg is the green
component of the frame color. Valid range: 0-255. fb=116
fb is the blue component of the frame color. Valid range: 0-255.
Each parameter is separated by a | character. Make sure there is
no newlines in the <img src= line and no space in the query string
(?ft=9|fr=69|fg=139|fb=116). Please note that fp, fr, fg and fb all
have to bein lower case. If you do not provide these parameters or if
you provide someting wrong, no frame will be wrapped around the clock.
You can be creative about the frame thickness and color.If you
do not want any frame, you can refer to the program like:
<img src="/cgi-bin/Dgclock.cgi">
WWW Page
Access Counter!
How to call the program? Let me tell you first, do
not get frustrated because it has lots of options. I'll explain each
option step by step. If you keep reading,you'll see it's really simple.
You can refer to the program like this:<img src="/cgi-bin/Count.cgi?ft=9|frgb=69;139;50|tr=0|trgb=0;0;0|wxh=15;20|md=6|dd=A|st=5|sh=1|df=count.dat"
align=absmiddle> The string between ? and " is called the
QUERY_STRING. Make sure there isno newlines in the <img src= line
and no space in the QUERY_STRING. Here: ft=9 ft means
frame thickness. If you want to wrap the counter with a ornamental frame,
you define the frame thickness like this. Here 9 is the thickness of
the frame in pixel. This value can be any positive number more than 1.
For nice 3D effect, use a number more than 5. If you do not want frame,
just use ft=0. frgb=69;139;50 frgb defines the color of
the frame. Here 69 is the red component, 139 is the green
component and 50 is the blue component of the color. The
valid range of each component is >=0 and <= 255. The
components must be separated by ; character. Note even
if you define ft=0, these components must be present,
just use 0;0;0 in that case. tr=0 tr defines if you want transparency in the counter image.
here tr=0, that is I do not want transparent image. If you
want transparent image, define tr=1. Note that Coun.cgi,
does not care if your digits are transparent GIFs or not.
You must tell explicitly which color you want to make
transparent. trgb=0;0;0 if tr=1, then black color of
the image will get transparent. Here 0;0;0 are the red
, green and blue component of the color you want to ma
ke transparent. wxh=15;20 wxh string defines the wi
dth and height of an individual digit image. Each dig
its must have the same width and height. If you like
to use digits not supplied with my distribution, find
out the width and height of the digits and specify the
m here. md=6 md defines the maximum number of digit
s to display. It can be >= 5 and <= 10. If your
counter number is less than md, the left digits will b
e padded with zeros. Here md=6 means,
display the counter with maximum 6 digits. f you do not want
to left pad with zeros, use pad=0 instead of md=6.
Note you can either use md=some_number of pad=0
, in this field, you can not use both. I
f you use pad=0, then the digits will
be displayed exactly without padding. dd=A
dd means digit directory. A indicates, it will
use my LED digits located at the direct
ory A. There are about 7 digit directories,
labeled A-F, try them out to see what th
ey look like. st=5 st means sta
rt, that is start the counter with this
value. sh=1 sh mean show. If s
h=0, then no digit images will be displayed,
however a transparent 1x1 transparent GIF image will be
returned, which will give the illusion of nothing being displayed. Althouh
it will seem that nothing is displayed,the counter will
be incremented all right. df=count.dat finally df means data file.
This is the file which will contain the
counter number. Please use your username.dat as filename
All these options must be in the same order as told
and all in lowercase and all of them must exist.
We use the CERN htimage program, called from your html file be:<
A HREF="/cgi-bin/htimage/[UNIX PATH TO YOUR MAP FILE]"></A>CERN's
format looks like this:#commentsdefault URL rect (x1,y1) (x2,y2)
URLcircle (cx,cy) (x1,y1) URLpoly (x1,y1) (x2,y2) (x3,y3) ...
URL
For a better understanding, check out this
example.
Client Side Image maps are not "flat"
files like NCSA and CERN - they are part of the actual HTML document.
As such, they look extremely weird to the normal user. <MAP
NAME="refname"><AREA SHAPE=method COORDS="positiondata"
HREF="link" ALT="comment" TARGET="targframe">...more of same...</MAP>
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