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Jan
26
revised Since installing mathematica 9 I can't import certain tiffs
Formatted code as code...
Jan
26
suggested approved edit on Since installing mathematica 9 I can't import certain tiffs
Jan
25
comment What are the most common pitfalls awaiting new users?
Suggestion: If appropriate to the problem, force Mathematica to use approximate numerical algorithms to avoid the computational overhead of their symbolic counterparts. There are several ways to do this (e.g., NIntegrate vs. Integrate, using real approximate numbers instead of integers in equations, etc).
Jan
19
awarded  Citizen Patrol
Jan
17
awarded  Yearling
Jan
17
comment Why does Simplify ignore an assumption?
As does Simplify[x^2+y^2,x^2+y^2==a], and Simplify[x+y,x+y==Cos[a]] returns Cos[a]
Jan
16
comment Why are the elements of plots separated in exported PDFs?
Did you send the PDF to the Omnigroup? They're a pretty responsive bunch and I wouldn't be surprised if you get an answer.
Jan
14
accepted NumberForm and units
Jan
14
accepted Simplifying to different units
Jan
13
comment NumberForm and units
That worked for me. Thank you!!!
Jan
12
asked NumberForm and units
Jan
3
comment Why am I not getting Indeterminate for f[1] when f[x_] = (x - 1)/(x - 1)?
By the way, if you had typed ?f following the original definition of f, you would have seen why it was returning 1.
Dec
25
comment Incomplete implementation of units?
I was thinking (perhaps incorrectly) that TargetUnits only applied to the output scale and that it wouldn't change the structure of a figure. I still believe that the proper way to address this question would be to add units to specs such as bspec.
Dec
25
asked Incomplete implementation of units?
Dec
21
comment Is there a “No Units” (i.e., dimensionless) unit?
@Rojo: I still found your answer helpful because it forced me to (finally) learn something about unprotecting symbols. I think you should keep your answer.
Dec
21
accepted Is there a “No Units” (i.e., dimensionless) unit?
Dec
21
comment Is there a “No Units” (i.e., dimensionless) unit?
Perfect! Thanks!
Dec
21
comment Is there a “No Units” (i.e., dimensionless) unit?
@Rojo: I run Monte Carlo simulations which output huge quantities of data with varying dimensions, so I created a data dictionary which describes each data type, including the units. When the simulation results are loaded into Mathematica, I use the data dictionary to attach units. However, some of the data types are dimensionless and rather than having a special "dimensionless" case for the code that calls Quantity, I'd rather have Quantity handle it.
Dec
21
asked Is there a “No Units” (i.e., dimensionless) unit?
Dec
17
comment Are you interested in purchasing David Wagner's “Power programming with Mathematica”?
Add my name to the list.