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visits member for 2 years, 4 months
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Jun
29
answered Why does the function Evaluate speed up one function by orders of magnitude and another function not at all?
Jun
27
answered How can a power of 0 or 1 be replaced?
Jun
26
comment How to color separate a colored-in-pencil drawing?
This might be useful for identifying the pencil colour.
Jun
26
answered How to color separate a colored-in-pencil drawing?
Jun
25
comment Drop row if sum of part of row is equal to zero
@Mr.Wizard, one is so often torn between terseness and efficiency :-) My dream is one day to find a language in which the shortest code is always the fastest...
Jun
25
comment Drop row if sum of part of row is equal to zero
Nice use of SlotSequence. Shorter version: Pick[A,+##3!=0&@@@A]
Jun
25
comment Drop row if sum of part of row is equal to zero
@b.gatessucks, or DeleteCases[A, {_, _, z__ /; +z == 0}]
Jun
25
comment Drop row if sum of part of row is equal to zero
Use Equal (==) to test for equality, not Set (=)
Jun
24
comment Visualization: elliptical insights into data sets…
Pam, if you've come up with some code that answers the question, please post it as an answer (it's allowed, in fact positively encouraged, to answer your own question).
Jun
23
comment Solving a system with three equations and two variables
Voting to close as this is just basic errors of syntax
Jun
23
comment Solving a system with three equations and two variables
Try NSolve[{(Xsps[x, r]/Xppp[x, r])^2 == (0.076/0.120)^2, (Xssp[x, r]/Xppp[x, r])^2 == (0.076/0.102)^2}, {x, r}]
Jun
23
answered Plot has red 'film', no error message
Jun
21
comment Improving ListContourPlot mesh triangulation
Look up FindDivisions for choosing tick positions.
Jun
20
awarded  Enlightened
Jun
20
awarded  Nice Answer
Jun
14
comment How can I list all the 'countries 4000 km far from current location'?
@Szabolcs, I think this is an interesting question (we don't have any other answers on the site using GeoDestination) so I edited it to not be about W|A any more.
Jun
14
revised How can I list all the 'countries 4000 km far from current location'?
changed focus of question away from Wolfram Alpha
Jun
14
comment How can I list all the 'countries 4000 km far from current location'?
Looks like version 10 has this built in :-)
Jun
14
comment How can I list all the 'countries 4000 km far from current location'?
The reversal of lat, long is only for displaying the graphics. Perhaps it is best to say don't reverse any coordinates in loc or bounds, and use Polygon[Reverse /@ bounds] in the graphics.
Jun
14
comment How can I list all the 'countries 4000 km far from current location'?
Very nice, but to get the correct shape you need to keep loc as {lat, long} and do the Reverse after GeoDestination, i.e. bounds = Table[Reverse@GeoDestination[loc,...