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23h
comment Binary file gymnastics
@PabloGalindoSalgado if I were to guess, I would suspect they are in fact complex doubles
1d
comment How to speed up Colorize
and finally before this get likely gets locked: Graphics[Raster[ImageData[A, DataReversed -> True], ColorFunction -> "AvocadoColors"]]
1d
comment How to speed up Colorize
Although it might not save speed in terms of computation time, you might find ImageFileApply to be a useful function, especially when processing a large number of images.
May
19
comment Evaluation problems with NDSolve using the fixed step ExplicitEuler-Method
try defining your b and g as follows: b[t_?NumericQ]:=pulseTrain[0,1/32,1,10][t];g[t_?NumericQ]:=32 b[t]
May
18
revised Series of integrate in exponential
covert to pretty greek
May
15
comment Orthogonality relations of Hermite polynomials
Which version of Mathematica are you using. Using 10.1 it takes less than a second to calculate n=m=10.
May
15
revised Orthogonality relations of Hermite polynomials
clean up WL
May
15
answered Binary file gymnastics
May
15
revised how to create, print and use variables using a loop in Mathematica?
added the index to S (as in the OP)
May
15
answered how to create, print and use variables using a loop in Mathematica?
May
12
comment Curious solutions of x' = Sqrt(x), x(0)=4
DSolve[{x'[t] == Surd[x[t], 2], x[0] == 4}, x[t], t]
May
12
comment Make the map of rivers and lakes of the country
You can try CTRL+= rivers in belarus.
May
12
comment How to rotate a “completegraph” without image rescaling while rotating
....you will send chuy nonconsecutive $20 bills...
May
12
answered How to rotate a “completegraph” without image rescaling while rotating
May
12
answered Want apply “Position” in my list of Entities
May
12
comment Want apply “Position” in my list of Entities
alternatively Through[(GeoEntities[CountryData["Belarus"],"Lake"|"Canal"])["Position"]]
May
11
comment Bug: Export sometimes adds unwanted background to PDF files
You might try specifying Background->None as an option to Export
May
11
comment A Query using Select and Quiet fails but Select by itself works
You can use either data2[Select[StringMatchQ[ToString@#a, "hey*"] &]] or the wordier data2[Select[ Length[Cases[{#a}, x_String /; StringMatchQ[x, "hey*"] ]] > 0 &]] if you feel the need to avoid ToString
May
11
comment A Query using Select and Quiet fails but Select by itself works
Isn't the issue entirely that you want StringMatchQ to work with non-Strings?
May
8
comment Why is zero times vector of reals not zero?
TensorExpand[Refine[a.b]]