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Aug
17
comment Is it necessary to introduce ImplicitRegion and ParametricRegion in version 10?
For instance, you can't Integrate over RegionPlot, but you can do it over an ImplicitRegion. New computational geometry functionality with regions is more symbolic than old, which was mostly related to visualization. Sadly enough naming can be a bit confusing and prevent seeing the difference...
Jul
31
awarded  Nice Answer
Jul
22
awarded  Guru
Jul
20
comment Webdings are different on V10 vs V9. Why?
A side note: Unicode is supposed to supersede Webdings. For specific glyphs you need there are #25B8 and #25BE, correspondingly \[RightPointer] and \[DownPointer] in Mathematica.
Jul
18
comment Kernel crash after idle in version 10.0
I saw a similar issue when I tried some geodata stuff on a ferry with extremely congested satellite link and a transparent HTTP proxy. I wasn't able to reproduce the issue, but it certainly seemed like an issue with network connectivity.
Jul
16
comment ParametricRegion question - a bug report
@RunnyKine Ah, I got it the other way round. :)
Jul
16
comment ParametricRegion question - a bug report
@RunnyKine It does say on bottom of the page (at least on the web): "Introduced in 10 (10.0)". It's part of geometric computation functionality. I think there was some undocumented functionality like this in version 9, but nothing official.
Jul
15
comment Controlling quality of discretized region meshes
Whoa, thanks! I'm a bit surprised FEM exposes this, instead of DiscretizeRegion, where I'd expect it to live now. Hoping to see those rough edges (pun intended) smoothed out in the future!
Jul
15
accepted Controlling quality of discretized region meshes
Jul
15
asked Controlling quality of discretized region meshes
Jul
14
comment Limiting the use of discrete graphics card on Mac
Intriguingly enough, the problem in v10 seems to be harder to reproduce than it was before. Maybe things have changed for the better through FE modernization effort!
Jul
14
comment Limiting the use of discrete graphics card on Mac
This problem is still present in v10. It's quite an annoyance to play with gfxCardStatus just to keep otherwise idle Mathematica from keeping discrete GPU running, even when idle.
Jul
7
comment Computing integral over explicit region
Also in v10, or Programming Cloud with regions functionality: Integrate[y^2 - 2x^2y + 6x^3 - 3x y + 2y - 6, {x, y} \[Element] ImplicitRegion[y => 2x^2 - 2 && y <= 3x, {x, y}]]
Jul
2
awarded  Curious
Jun
26
comment Factoring terms out of a polynomial
Clear \[Tau] first. Then this ugly hack works: Map[(a \[Tau]^b /. First@FullSimplify[Quiet@Solve[a GoldenRatio^b == # && (a == 1 || a == 0 || a == -1) && b >= 0 && b \[Element] Integers, {a, b}, Reals], b \[Element] Integers && b >= 0]) &, coords, {2}]
Jun
24
revised Find intersection of pairs of straight lines
added 431 characters in body
Jun
24
comment Find intersection of pairs of straight lines
@joojaa No problem. :)
Jun
24
awarded  Custodian
Jun
24
reviewed Reject suggested edit on Find intersection of pairs of straight lines
Jun
24
comment Find intersection of pairs of straight lines
@YvesKlett See "Geometric computation" in Wolfram Language documentation. I have been playing with it on Programming Cloud which was unveiled yesterday. Finding out it works with 9.0.1 is entirely thanks to Chenminqi. :)