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Jun Wang - Trouble with on-the-fly graphic problems

Jun Wang - Trouble with on-the-fly graphic problems

by Arnold Pizer -
Number of replies: 0
inactiveTopicTrouble with on-the-fly graphic problems topic started 7/26/2002; 4:21:25 AM
last post 7/31/2002; 5:44:07 AM
userJun Wang - Trouble with on-the-fly graphic problems  blueArrow
7/26/2002; 4:21:25 AM (reads: 1485, responses: 3)
Hello everyone. We just installed the WeBWorK system last month and we have been checking and fixing errors. There is a strange thing about every on-the-fly graphic problem here: it does not plot curves except for the two end-points (even for constant function like y=1). There were no error messages. It appears like that the plot_functions just take the function "1 for x in [1,2]" for a function "y=1 defined at 1 and 2 only".

I did not find similiar topics in this forum. Does anyone have any suggestions? Thanks a lot.

Jun Wang, Alabama State University

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userJohn Jones - Re: Trouble with on-the-fly graphic problems  blueArrow
7/26/2002; 7:52:24 AM (reads: 1756, responses: 0)
This is a wild guess, but did everything go ok when you installed the perl module GD.pm?

I always have to install libgd first (under Slackware), and that is an adventure in itself (I can't believe that libgd's Makefile works for anyone out of the box).

John

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userJun Wang - Re: Trouble with on-the-fly graphic problems  blueArrow
7/26/2002; 5:25:08 PM (reads: 1732, responses: 0)
Thanks John. I was not present when installing the GD.pm so I will check it with our system administrator. Meanwhile, if anybody could think of other possible causes, please do let me know. I will post a follw up when this problem is resolved.

Jun

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userJun Wang - Re: Trouble with on-the-fly graphic problems  blueArrow
7/31/2002; 5:44:07 AM (reads: 1813, responses: 0)
John is right. The problem was with GD.pm. I am not sure how we installed GD-1.33 but now we installed GD-1.41 with gd-1.8.4. The problem is resolved now. Thanks a lot, John.

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