what is the best and easiest to draw a multi bar chart in php

Posted by gin on Stack Overflow See other posts from Stack Overflow or by gin
Published on 2010-05-27T18:01:02Z Indexed on 2010/05/27 19:01 UTC
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charts

i want to display the results of students scores in a multi-vertical bar chart (red bar for correct , green bar for false) for each question,, i already tried Google chart, but it gives me result in this way:link text

note: the bars that reached the top , should not be at top ,, only because they have the highest value (75%), Google chart makes it at top which i don't want..

any suggestions about how to draw simple vertical bar chart with php

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