Article Discussion: Statistical View of Data in a Clustered Bar Chart

In this article Naeem shows us how to go about creating a statistical view of data in the form of a clustered bar chart using PHP and MySQL.  He provides a real-life scenario along with accompanying code to demonstrate how the job can be accomplished.


The Topic/Review Can Be Found Here: Statistical View of Data in a Clustered Bar Chart

Here are few comments to author of this article:

Supportfiles doesn't work

Example:
student.php and student_action.php

No variables are basically communicates between these pages for very obvious errors! would you please fix all these errors and post here, so we can view data on clustered bar chart.

In the article[PAGE 1]:
Let's look at the following E-R diagram from which we have to present a statistical view (in the form of a clustered bar chart)

- What you are trying to make a statistical view in the article (it is no where mentioned in the article!).

What is the continuous variable here? and what are those discrete variables to generate clustered graph? There is no way to figure out those vital information in your articles!!

If I am not clear enough to you please see the link below:
http://jcharts.sourceforge.net/user.../barCharts.html
In this report look how Microsoft Inc, is being tracked by clustered graph "Bugs","Security Holes" and "backdoors".

In article [PAGE 5]:

especially in a tightly normalized

What do you mean by TIGHTLY normalized? Did you mean fully normalized?


And At Last:

What is the importance of fully normalization in a hierarchical clustering, as you mentioned in the article "TIGHTLY normalized"?

Example: After median centering the data set, If we performed hierarchical clustering using average linkage clustering and the centered correlation similarity metric.

Readers will really appreciate your answer.

Thanks

hello iAhmad


the two files (student.php and student_action.php) are related with each other as per form variables.
of course when you submit button(student.php) then a form collection variable carries all of the related information from "FORM WEB CONTROLS" and these values are processed by student_action.php
This is quite a basic idea of web-technology.
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Bar is taking its inputs from four variables (Student Names , Marks , Subject , Program)
and then categorize them according to their groups and display the data using three student name , marks variables.

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Ahmad! I download and verify the support file again..and it was working correctly...

after designing the database schema..(availeable in article.sql) , you have to populate your database by adding subject , student name and in the final the student marks...

tell me which problem is raised while you execute the application. start it from
(URL)
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One may go by designing a SINGLE table and then simply pulling out the data and displaying this in form of bar chart...but that is not a real case scenario.
as in most of the database designing cases , the databse is more or less fully normalized.....that is why i give an example of a fully normalized database which mimic like real case scenarios.

Regards
Naeem!
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