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Aug
7
comment How can I plot a function of imported data that ends up nested in lists four deep?
Is this not as simple as using Flatten?
Aug
2
comment Displaying a list of percentage values according to their classification
Elegant solution!
Aug
1
comment Global` context not empty at startup in v10.2.0
Confirmed in v10.2 under Mac OS X 10.10.4.
Jul
17
comment TimelinePlot with Interval in Associations
Thank you, @rcollyer.
May
29
comment Why is ListPlot so slow here?
@Mr.Wizard: I don't have v7 any longer, but here are my numbers on my pokey MacBook Air: v8 2.1 sec, v9 0.43 sec, v10 3.6 sec. I used lp=ListPlot[dat];//AbsoluteTiming since it appears RepeatedTiming wasn't available until v10 (?). Anyway, it looks like you're correct--this may not be v10-specific.
May
29
comment Why is ListPlot so slow here?
Has anyone looked more broadly at plotting speeds? Apparently StreamPlot is slower too: mathematica.stackexchange.com/questions/78938/…
Apr
28
comment How to draw confidence ellipse from a covariance matrix?
Did you look at this? mathematica.stackexchange.com/questions/794/…
Apr
14
comment Bug with DateListPlot with ToolTip with NumberForm?
I get the same errors in 10.1 under Mac OS X.
Apr
4
comment Behavior of TimelinePlot with multiple datasets of associations
So should this be tagged as a bug?
Jan
18
comment What to do when you encounter SystemException[“MemoryAllocationFailure” during an Optimization
"What to do when you encounter SystemException[“MemoryAllocationFailure” during an Optimization"? Curse.
Jan
6
comment InterpolatingFunction used to work with mathematic 7 but not working with mathematica 10
What do you mean by "not working?"
Dec
30
comment Position from 3 dimensional acceleration data?
As @DanielLichtblau pointed out, it's not clear what problem you've identified. That said, what you're trying to do is tricky, at best. Since you're doubly integrating accelerometer data, biases become a major error source (the bias is the value that the sensor indicates when it's not accelerating). Furthermore, biases drift, so correcting for them is challenging. Add to that noise and other error sources, and you've got a tough problem. Finally, you need to correct for the rotational motion of the earth...
Jun
4
comment Switching the ordinate and abscissa causes problem in `ParametricPlot`
It worked because your list effectively requested two parametric plots (new[x] and x), though the second parametric plot was underspecified and thus ignored by MMA.
Jun
4
comment How to calculate this integral?
I'm also unable to get MMA to calculate the integral symbolically. However, you can calculate it numerically for a given value of a: NIntegrate[(Exp[-a x] (x^2 - 1)^(13/2)/x^10) /. {a -> 0.1}, {x, 1, [Infinity]}]
Jun
3
comment How to compute this triple integral?
Heh. Sometimes it's better to be lucky than to be smart!
Apr
25
comment How to solve a non-linear equation?
I should leave this to the mathematicians, but I seriously doubt you're going to find a symbolic solution. If you want a numeric solution, you need to specify the values of a, b, c...
Apr
25
comment How to solve a non-linear equation?
Ummm…are you looking for a symbolic solution in terms of the unknowns or a numerical solution (in which case you need to provide values for the a, b, c…). Regardless, what makes you think there is a solution?
Apr
25
comment Histogram scale error when using DistributionChart
It seems as though there's a "minimum" bar size for HistogramDensity, which definitely distorts the distribution. Unfortunately, I can't offer a suggestion for eliminating the problem (other than to choose a different approach to plotting the distribution, such as SmoothDensity).
Mar
30
comment Evaluate integral of a series
@Lawerance: if you are satisfied with the answer you received from Jens (and it seems you are), then please Accept his answer.
Jan
24
comment Solving a linear system
The first equation in Solve does not exactly match the OP's equation (40-->4), so the posted result is not correct.