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My Mathematica version : 8.0.4, windows 7


Aug
7
answered How to sort my list?
Jul
30
comment Why does Fourier give a shifted frequency?
@xslittlegrass I think you are right : your frequency error is not due to a lack of periods in the waveform (with 10 periods, the phenomenon is negligible)
Jul
30
comment Why does Fourier give a shifted frequency?
When the waveform has very few periods, the magnitude of the Fourier transform depends on the phase of the Cos[30 x]. Try Cos[30 x + Pi] and you will see the peak above the expected frequency.
Jul
22
awarded  Revival
Jul
18
answered How to display the indices/element positions of a ragged array?
Jun
15
comment Algorithm to generate a certain matrix
Array[{{-2, -1}, {-2, -1}} + {#1 - 1, #2 - 1} &, {4, 4}]
Jun
13
comment Merge two lists for List3DPlot
What is the most effective way to add rows and columns to a matrix
Jun
13
comment Merge two lists for List3DPlot
MapThread[Append, {list1, list2}]
Jun
10
revised Why PlotRange doesn't work for this set of values?
improved code formatting
Jun
6
comment Delete Missing data from coordinate sets
DeleteCases[coordinates, _?(MemberQ[#, _Missing] &)] or DeleteCases[coordinates, x_ /; MemberQ[x, _Missing]] work
May
16
answered Determine frequency of oscillations
Mar
16
awarded  Enlightened
Mar
16
awarded  Nice Answer
Mar
4
answered Converting from TableForm to Grid
Feb
19
comment How to use Select to exclude a single element which I can control?
@Steve Yes it is
Feb
19
comment How to use Select to exclude a single element which I can control?
Select[l, # =!= 13 &] works.
Feb
17
revised Manipulating a sublist based on position
added 88 characters in body
Feb
17
answered Manipulating a sublist based on position
Feb
14
revised Finding the intersection of a curve with an interpolation function
added 1 characters in body
Feb
14
revised Finding the intersection of a curve with an interpolation function
added 2 characters in body