8,853 reputation
31670
bio website bobthechemist.com
location Chicago, IL
age 40
visits member for 1 year, 9 months
seen 2 hours ago

Chemist, birdwatcher and Mathematica enthusiast. Interested in developing tools that help kids learn science.


1d
comment For a given expression: if it appears, remove it, but if it is absent, add it
Paraphrasing the project euler website, I would propose that "The motivation for <answering your questions>, is to provide a platform for the inquiring mind to delve into unfamiliar areas and learn new <Mathematica> concepts in a fun and recreational context." Granted, I found it wittier before I tried to explain it.
1d
comment For a given expression: if it appears, remove it, but if it is absent, add it
Never mind project Euler, how about project Wizard?
1d
awarded  Enlightened
2d
reviewed Edit Why does Mathematica add Hold to the result of my user defined symbol?
2d
revised Why does Mathematica add Hold to the result of my user defined symbol?
I've inserted code instead of the image.
Jan
22
awarded  Nice Answer
Jan
21
reviewed Looks OK How to calculate electronic Band structure of cristal
Jan
21
comment How to calculate electronic Band structure of cristal
Please add some more details.
Jan
21
comment How can I make an linear breakdown chart similar to those seen on iCloud?
Not sure I buy the "easier" argument but +1 nonetheless. Does the Tooltip shadow come automatically on OS X? The default tooltip style is amazingly awful in the PC version.
Jan
20
answered How can I make an linear breakdown chart similar to those seen on iCloud?
Jan
16
reviewed Close How to select a set of cells to cut and paste into another notebook
Jan
16
reviewed Close How to implement Ramanujan's summation of divergent series in Mathematica?
Jan
16
reviewed Close Rules working or not working in similar conditions? Why? How to make them work?
Jan
16
comment Rules working or not working in similar conditions? Why? How to make them work?
Regarding one of your comments, you might have trivialized the example too much. If your problem is getting the rules to function properly within a Manipulate, then providing toy-code for that case will be helpful.
Jan
16
reviewed Close Converting .jpg to .eps
Jan
15
answered Synchronizing the camera view of multiple Image3D panels within a Manipulate interface
Jan
15
accepted Creating formulas for the Moodle CMS question bank
Jan
13
comment Creating formulas for the Moodle CMS question bank
It never occurred to me that Moodle was using a c-type format. This solution works brilliantly.
Jan
13
revised Creating formulas for the Moodle CMS question bank
Added my current solution and the questions that arise.
Jan
13
answered Replacing parts of a matrix