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Jun
18
revised SetDirectory[NotebookDirectory[]] in one notebook causes Directory[] to change in a different notebook
clean
Jun
18
asked SetDirectory[NotebookDirectory[]] in one notebook causes Directory[] to change in a different notebook
Jun
18
revised Plotting a 2D mapping of a 2 column ASCII
removed the Flatten as not needed
Jun
18
comment Plotting a 2D mapping of a 2 column ASCII
@Guesswhoitis. yes ofcourse, Flatten is no longer needed in version 2. I had it there from version 1 in which it is needed, because the way I did it before, and I forgot to remove it again for version 2. Thanks, will remove it now.
Jun
18
revised Plotting a 2D mapping of a 2 column ASCII
added based on comment
Jun
18
comment Plotting a 2D mapping of a 2 column ASCII
@Guesswhoitis. wow! thanks, I did not know this. I'll update.
Jun
18
answered Plotting a 2D mapping of a 2 column ASCII
Jun
18
comment Plotting a 2D mapping of a 2 column ASCII
Yes, I needed to do [[All, 2]] first, forgot about the first element is not part of data.
Jun
18
comment Plotting a 2D mapping of a 2 column ASCII
Is this what you mean? Image[Partition[pix, 5], ImageSize -> 400] where pix is the data you show. !Mathematica graphics
Jun
10
comment Mathematica keeps crashing my machine — is there a way to prevent Mma from eating up so much system resources so this doesn't happen?
see TimeConstrained and MemoryConstrained and adding $HistoryLength = 0; at the top helps also. Other than that, maybe your PC has virus if it keeps crashing like this? I recommend ESET virus protection for PC's. I've been using it for years.
Jun
10
answered How to change size of slider in Manipulate?
Jun
10
comment How to extract notes and chords from audio?
fyi, to use Wavelet, something like : cwt = ContinuousWaveletTransform[sound, GaborWavelet[6], Padding -> 0.0, SampleRate -> 44100, WaveletScale -> Automatic]; where the SampleRate is obtained from the file. As well as the Sound (imported, using Elements). I just do not know enough about Wavelets to answer your question on sound. Here is screen shot !Mathematica graphics
Jun
9
comment How to extract notes and chords from audio?
I got the spectrum for this, But used fft. Why do you have to use WaveletTransform for this? Screen shot !Mathematica graphics
Jun
9
answered Why empty plot (Dsolve solution)?
Jun
9
answered Stopping plot from shaking
Jun
8
comment How much time should one give Mathematica for an integral evaluation?
this page has CPU time of problems used, for V 10.1. No time out is used in this one.
Jun
7
answered Plotting entries of one table vs entries of another with a condition on a third table
Jun
6
revised How to replace element of list by index
added 590 characters in body
Jun
6
answered How to replace element of list by index
Jun
4
comment Preventing Power from evaluating principal value
"Exactly, E^(2 I Pi) is evaluated to 1", yes, Mathematica knows this is 1, so the evaluator automatically simplifies it. To prevent this, you can do Sqrt[Exp[x I Pi]] and now it does not simplify it. Later on, you can replace x with 2 using expression /.x->2, but you will still get 1.