49,187 reputation
3100202
bio website halirutan.de
location Leipzig, Germany
age
visits member for 2 years, 11 months
seen 1 hour ago

Although I'm quite familiar with Mathematica, I always try to keep an open mind and don't use it as golden hammer. I'm particularly good at things that are fun, for instance


10h
comment Animate skips frames and hard to control speed.
How about the option DisplayAllSteps->True of Animate?
11h
comment Extracting ragged array from an image
@belisarius No, it doesn't force you but no matter what you supply as argument, the output is a bit-matrix. At least this is how I understood it and how it behaves.
12h
comment Extracting ragged array from an image
You should skip the binarize and use a Dilation on the original point image instead. I would have written up an answer, but your reasons for not using an image/integer bases approach are a bit vague. Do you have important reasons why a pixel based approach would not be sufficient?
1d
comment Unable to compute the area of region
I should comment more often if it leads to answers instead of comments :-))) +1
2d
comment Unable to compute the area of region
@gpap Why would someone want to calculate the area of the convex hull when he is interested in the area itself?
Dec
13
comment Save as pdf broken in version 10.0.2?
@MathLind The update of Mathematica itself will not happen automatically. I'm not sure if everyone can get the minor updates (like 10.0.1->10.0.2) for free, but you should be able to find out by logging into the [Wolfram user portal](user.wolfram.com). There, I can manage all my licenses, get the new versions, etc..
Dec
12
comment Function that returns the second argument of Reap
This is what I like to see: new user jump in and write up answers! +1
Dec
12
comment Linux: Mathematica crashes when clicking documentation links very fast
@Öskå It's the same here. Sometimes it crashes after only a few clicks and sometimes I need 50 clicks. But it always crashes. One time, the front end froze without crashing but I had to kill the session.
Dec
12
comment RegionPlot[] using ImplicitRegion[] bug?
Works find under Ubuntu 14.04 and Mathematica V10.0.2. Can you please provide the system and version you are using?
Dec
12
comment Defining the value of variable after expansion
@Jimmeny Surprise, you have 26 rep now.
Dec
12
comment Create an image showing max intensities in a set of images?
@MilenkoRubin-Zuzic What you want is in general not possible, because the mapping value -> {r,g,b} which you use to create img1 and img2 has (in general) no inverse. What you can do is to calculate the max before you turned your gray values into colors, but this is what bill has already shown you in his answer.
Dec
12
comment Better answer to Santa's riddle about sum of a number's divisors?
@Apo Correct. With this you can watch the full history.
Dec
12
comment Better answer to Santa's riddle about sum of a number's divisors?
@Apo I saw this some minutes ago. I'll edit my code.
Dec
12
comment Better answer to Santa's riddle about sum of a number's divisors?
@OleksandrR. I don't want to spoil the fun, but Santa's reindeers are certainly older than 7. I'm still thinking we miss something of this riddle because should the solution not be unique?
Dec
12
comment Defining the value of variable after expansion
@Jimmeny But why don't you use Table instead of Series and create the powers yourself? Feel free to join our Mathematica Chat and we can discuss this.
Dec
12
comment Save as pdf broken in version 10.0.2?
@xslittlegrass Can confirm this on Ubuntu 14.04 with Mathematica V10.0.2
Dec
12
comment Defining the value of variable after expansion
@Jimmeny You have to explain this a bit. Let's say you have Series[Exp[z], {z, 0, 10}], what exactly do you want?
Dec
12
comment Defining the value of variable after expansion
@user3838785 Don't worry. Give it some time and don't accept my answer just know. Wait a bit and see what others have to suggest. In the meantime, fill out your profile and give yourself a sensible name. Read the FAQ and look around..
Dec
11
comment Invisible graph edges
@belisarius That's why I use Ceiling. Doesn't the above code work for you?? Because I tested it on V9.
Dec
11
comment Having trouble using different options with GraphPlot
You seem to make something different wrong, because your examples work fine here. Are you sure that it gives the error when you copy GraphPlot[{1 -> 2, 2 -> 3, 3 -> 1}, VertexLabeling -> True, DirectedEdges -> True] into a new input-cell and press Shift+Enter?