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1d
comment Export[] performance
Could be a windows issue then.
1d
revised Export[] performance
added 48 characters in body
1d
revised Export[] performance
added 6 characters in body
1d
revised Export[] performance
added 385 characters in body
1d
answered Export[] performance
1d
comment Export[] performance
I believe the bottleneck is not i/o but in the string conversion . Note ExportString and even Map[ToString,exp,{2}] give similar timing.
2d
comment Straighforward iteration with mathematica instead of recursion
You should show values for your constants and the way you specify them as well. This runs in very fast for me but I'm guessing about what you are doing.
2d
comment Straighforward iteration with mathematica instead of recursion
you have a bunch of unbalanced parenthesis in your code. Please check it since its not obvious how to fix.
Sep
16
comment Kernel crashes when plotting $z=\sqrt{(x^2 + y^2)^0}$
confirmed, but so what? The workaround is "don't do that".. (Wrapping the expression in Evaluate fixes it.. )
Sep
16
comment Import selective elements from mixed (text and numbers) data file
Just checked that, it is in fact faster to import the whole works and take what you need afterward.
Sep
16
comment Exporting row vector as a column in excel
Note the "A" here is the sheet name not the column ( "A" might not have been the best choice for the example.. )
Sep
16
comment Update variable with incrementing value
the first line in you loop v- .. basically does nothing. The expression is evaluated and the result discarded since you dont do anything with it.
Sep
16
revised Update variable with incrementing value
added 25 characters in body
Sep
16
comment Double integral changing the limits
In this case you don't get a different result, but no result at all in the first case. If you pick a value for a and use NIntegrate on the outer integral for the first case you can show that you get the same answer, ie. they are equivalent, mathematica just cant do it in the one order.
Sep
16
comment Find constants in a function?
try == 123456
Sep
16
comment Import selective elements from mixed (text and numbers) data file
nice. does this perform any different vs Import[...][[1,All,{2,3}]]
Sep
15
answered drawing core-shell structure
Sep
15
revised Find arc length
deleted 37 characters in body
Sep
15
comment Find arc length
You can specify PlotPoints->some big number if you are concerned about the accuracy
Sep
15
answered Find arc length