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| bio | website | |
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| location | ||
| age | ||
| visits | member for | 1 year, 4 months |
| seen | 1 hour ago | |
| stats | profile views | 873 |
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May 6 |
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Custom File Palette @MarkMcClure You have indeed. Very cool! thanks |
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May 6 |
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Custom File Palette @belisarius yes! |
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Apr 24 |
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Runaway MathKernel! this has happened to me a few times when I am using parallelization (just like Szabolcs mentioned). could this have been the case here too? |
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Apr 21 |
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How to change Compiled->False to Method->{Compiled->False} in multiple notebooks? @user7040 if you use emacs, why not just use that? do you know elisp? but this may be easier... The idea about FileNames is to do something like SetDirectory[NotebookDirectory[]];FileNames["*.nb"] to obtain a list of notebook files, then maybe assign the code I gave above to a function and map that. Ask here if you have problems. |
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Apr 20 |
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Why is NonlinearModelFit calling the model function with symbolic arguments? if you give it as an argument (say) f[x], it probably tries to probe it with symbolic x first. So if f involves (say) NIntegrate, it then passes the symbolic argument to NIntegrate which chokes. Using the form above (restricting f to have numeric args) prevents this from happening. If you try f[x_]:=(Print[x];stuff) with stuff the actual function, you can see what happens (or Trace might help) |
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Apr 20 |
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Why is NonlinearModelFit calling the model function with symbolic arguments? Well, did it help? |
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Apr 19 |
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Why is NonlinearModelFit calling the model function with symbolic arguments? Perhaps defining the function with f[x_?NumericQ]:=... will help. |
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Apr 19 |
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Interactively Manipulate Code I just happened to come here when the question was asked :) |
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Apr 19 |
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How to find an asymptote of a logarithmic curve Surely you can see that your question is underspecified. How and what do you plot? Yes, an exponential curve; but what do you do? Plot[1+Exp[-x/5],{x,0,50}]? something else? Try to be specific. Pretend that you don't know what you are doing; would you understand your explanation? If not, neither will we... |
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Apr 19 |
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Simulate a simple spinner +1, nice. You could also solve the ODE I solve with the initial angular velocity proportional to the magnitude of the flick; then it would be closer to a simulation. I'd do it but I don't want to steal your code! |
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Apr 18 |
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Trying to show an expression is always zero @DavidDoria probably the reason Simplify doesn't get automatically applied is that it could take an arbitrarily long time. Maybe all you want to do is substitute numbers, and not waste time simplifying; so the result isn't useless. As for showing the manipulations, not really. |
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Apr 18 |
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Using the Mathematica front-end efficiently for editing notebooks for OS X there's also BetterTouchTool which is free and lets you define arbitrary shortcuts for keyboard, mouse and trackpad actions. eg, shift+cmd+m to switch to mathematica. |
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Apr 17 |
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Mathematica 9.0.1 is clearing variables it's probably the kernel crashing. do you have any steps to reproduce this? |
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Apr 17 |
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Simulate a simple spinner it's now a bit smoother |
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Apr 17 |
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Simulate a simple spinner I've modified it to spin upon clicking a button. It seems to work but I wrote it by trial and error, so... |
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Apr 17 |
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Simulate a simple spinner @cormullion thanks. I figured that he has the UI in place and was asking about the rotation, so I addressed that. |
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Apr 17 |
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Simulate a simple spinner @J.M. I only know of Perlin noise from your answers... |
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Apr 16 |
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How can I find if the number of subsets for a list is very large? I am enthusiastically upvoting for two reasons: 1) TAOCP, 2) use of Goto |
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Apr 15 |
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diff-able text-only notebooks? @TobiasHagge good point. perhaps it's worth mentioning that that, too, will only include the code/initialization cells in executable form. |
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Apr 15 |
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diff-able text-only notebooks? @rm-rf does it save all initialization cells? didn't know that |
