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Jan
4
comment How to automatically have ContourLabels in middle of Contour lines if specific levels are not specified?
Thanks for the link. I downloaded and installed it. But as expected, it does not work with 10.3.1. This is an old package from version 3.0 ! I get lots of errors: !Mathematica graphics but what I will do next, is locate this specific function in the package, and try to make it work for 10.3.1. I've always had problems running old packages in new Mathematica versions. Something always changes. The LabelContour function is very complicated 450 lines long !
Jan
4
revised How to automatically have ContourLabels in middle of Contour lines if specific levels are not specified?
added image
Jan
3
revised How to automatically have ContourLabels in middle of Contour lines if specific levels are not specified?
added example
Jan
3
revised Change function acting on sum to function acting on each object individually
added kuba suggestion
Jan
3
comment Change function acting on sum to function acting on each object individually
@Kuba yes, I forgot above the -1, thanks for point it out. But Expand@expr is still needed as well.
Jan
3
revised How to automatically have ContourLabels in middle of Contour lines if specific levels are not specified?
typos
Jan
3
asked How to automatically have ContourLabels in middle of Contour lines if specific levels are not specified?
Jan
3
revised Change function acting on sum to function acting on each object individually
added 95 characters in body
Jan
3
answered Change function acting on sum to function acting on each object individually
Jan
2
comment Why do I get different results for the same input specified using natural language phrasing?
This site is about the Wolfram Mathematica language, not the Wolfram Alpha language. These are not really the same languages, even though they are based on the Wolfram framework. You might be better asking about the Wolfram Alpha language at the Wolfram community website, where there are many Wolfram Alpha language questions posted.
Jan
2
comment make constant some elements of a list
but there should be simple way, the simple way is to use an if statement. This is what one does in any programming language really. I do not see why it would be different in Mathematica. Trying to play tricks like what you wanted to do is the wrong approach to solve the problem. To get better help, please post a minimal example of the actual problem you are working on.
Jan
2
answered make constant some elements of a list
Dec
27
comment Dynamic plot with synchronization of real time
@LeoRon7 the standard method for allocating a buffer when one does not know how much to preallocate, is to allocate it using fixed sizes. (one chunk at a time). Start with say size = n, where is n is some number you decide on. Use Table to allocate it. Then use [[ ]] to write to it. When it fills up, you can allocate another list of size n. And so on. If you need all those chunks in memory, you make a linked list of them. And so on. Here is an example of linked list mathprogramming-intro.org/book/node525.html
Dec
27
revised Solving an equation and ODE simultaneously
added 263 characters in body
Dec
27
answered Solving an equation and ODE simultaneously
Dec
27
comment Problem with a plot for 1D wave equation solution using NDSolve
Here is the full code when I copied and pasted the full code into my notebook, I get syntax errors.
Dec
27
comment Dynamic plot with synchronization of real time
@Kuba I looked at updateInterval, but was not sure if it is more "strict" on getting timing exactly as needed than scheduled task. It says if possible, be done at least every t seconds. This whole subject of "real time" and Mathematica dynamics is very tricky.
Dec
27
revised Dynamic plot with synchronization of real time
added link
Dec
27
answered Dynamic plot with synchronization of real time
Dec
27
revised How to export a list of numerical data to a file in the terminal?
clean