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 Yearling
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  • 0 posts edited
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Jan
2
comment What is the function in Mathematica that can be used to find the derivative of a constant value function with respect to an arbitrary matrix?
I guess you mean scalar instead of constant, right? And for the differentiation part: Matrices consist of their individual indices, you need to differentiate by them. Take a look at D[], which does symbolic differentiation in Mathematica.
Dec
15
awarded  Yearling
Dec
7
comment Insert a string and add 0.5 in the last element in every list after
I strongly encourage you to learn the basics about "list manipulation". It's one of the most important things when working with mathematica.
Nov
10
comment Mathematica will not detect NVIDIA Titan X for CUDA functions
@DiegoAlonsoCortez: There might be a way to get the MSVC compiler from visual studio to work with Mathematica (I imagine I read about that somewhere), but out of the box Mathematica only supports VS 2013 or older versions.
Oct
22
comment A method to draw a surface around a set of regularly spaced points
@Rahul: I am aware of the paper, but am currently just interested in "onboard methods" supplied by mathematica directly. I also do think that the results from the paper tend to "oversmoothing", but it might be still one of the better techniques out there to use in my case.
Oct
22
comment A method to draw a surface around a set of regularly spaced points
@SjoerdC.deVries: Definitely not, I think we are both past attending university lectures :).
Oct
21
comment A method to draw a surface around a set of regularly spaced points
Oh, I literally posted the same question just a few minutes ago. I am stuck with ListContourPlot3D right now, but there might be some options I do not know of for different "intepolation" methods.
Oct
21
asked best way of plotting 3D surface from a binary voxel representation in Mathematica
Oct
19
comment Why doesn't Simplify use my own TransformationFunction?
Makes sense that it tries to minimize ComplexityFunction. For some reason I was naive enough to think that manually supplied TransformationFunctions have absolute priority.
Oct
19
accepted Why doesn't Simplify use my own TransformationFunction?
Oct
13
asked Why doesn't Simplify use my own TransformationFunction?
Aug
16
comment How can I capture a rectangular area from an image?
@JunhoLee: I get that, I just meant to think about what exactly separates one element you want from another (it seems to me that almost white lines in the image might already do the trick) and then detect those characteristic elements automatically. Afterwards it is just extraction with ImageTake and proper coordinates from the detection procedure mentioned before.
Aug
16
comment How can I capture a rectangular area from an image?
I would definitely analyse the image for whitespace between the different regions you want to extract or find some other characteristic elements in your image to look out for. Once those are found it should be a simple ImageTake on the remaining bounding box.
Aug
16
comment How can I capture a rectangular area from an image?
Could you please elaborate this problem a little bit further. Right now I cannot really see what the characteristic elements that make up your regions are because your desired output is from a different page than the input example.
Jul
26
comment An equivalent to Condition that I can use anonymously when string pattern matching
@Mr.Wizard: Thanks for the great job you are doing on this forum! (sorry for ignoring the no thank you rule ;))
Jul
26
comment Maximize[Cos[x - 1], x] is not evaluated
Well, it seems to be fixed in Mathematica 10.2 (running on OS X here).
Jul
26
comment How to add UpValues to a symbol to make a expression expanded normally?
How about just using PiecewiseExpand /@ D[BernsteinBasis[5, 3, u], {u, 2}] // Simplify?
Jul
26
comment Integrate over Piecewise function efficiently
@MichaelE2: Added the information.
Jul
26
revised Integrate over Piecewise function efficiently
added 409 characters in body
Jul
26
revised Integrate over Piecewise function efficiently
added 82 characters in body