User Portlet
| Discussions |
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| Roland, The problem is that your data formatting is messed up. I can't even read the data file you provided with the code you provided. By editing the data file a bit (I broke it into two files because Import was reading it as strings). I was... |
| I don't know exactly what you are trying to do but I notice at first glance that you pass r to a function that changes r in function gspot. This seems dangerous to me. If you intended to do some form of recursion, you need to debug that, otherwise, ... |
| Aya, As a recommendation, I really dislike using % anywhere in code. It makes the code less readable and less predictable. It's more useful for interactive use in Mathematica. If you evaluate parts of your notebook out of order, it will break. ... |
| Per, I think the change is happening on the Macintosh side. I just changed my Mac to use ^+' in my system preferences->keyboard->shortcuts by adding a shortcut to this: ![enter image description here][1] My shortcut changes in Mathematica... |
| César, You are correct. It seems to be missing in the documentation. I will report the oversight and link this thread. It should be added to the documentation for ToString[], CForm[], and FortranForm[]. I'm glad it helped. I use this... |
| Ramon, Your first problem is you should NEVER start your variables with capital letters in Mathematica. You will invariably interfere with the inner workings of Mathematica. For example, "E" and "I" both have special meetings (E is the constant... |
| Frank, How about going from the other direction by generating only numbers that are squares of two other squared integers. Original code on 2500 points: In[1]:= AbsoluteTiming[ t = Flatten[Table[{{x, y}, Sqrt[x^2 + y^2]}, {x,... |
| The error message states that your equations are not resulting in numbers. This clue suggests that you need to evaluate the equations at the start to find a syntax error. By setting time to zero and substituting in all the initial conditions, you... |
| [@Frank Kampas][at0] posted [some code][1] years ago that may help you. Regards. [at0]: https://community.wolfram.com/web/fkampas [1]: https://community.wolfram.com/groups/-/m/t/1402471?p_p_auth=YrBa0pXt |
| The Dot operator is for vector and matrix multiplication. Multiplication is an element by element operation. For example: In[61]:= {a, b, c} . {x, y, z} Out[61]= a x + b y + c z In[62]:= {a, b, c} * {x, y, z} ... |