Questions tagged [code-generation]
The code-generation tag has no usage guidance.
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Generator of limits of successions according to type of indeterminacy. Correct syntax
I am trying to make a limit generator with 3 columns, number of the exercise, the second column is the limit (perfectly written with n-->00), and the third column is the result of the limit.
I have ...
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How can I write the code for an inverse integral transform?
How can I code any type of integral transform with its inverse integral transform in Mathematica which gives the correct results and properties? Below is the example for Elzaki transform:
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2
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How to find codewords from constraint equations? [closed]
I have edited this question to include more information about what algorithm I wish to use etc.
Say if I have a linear binary code with parity check matrix
$$H = \begin{bmatrix}
0 & 1 & 1 &...
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Part specification error
I am doing a solved exercise shared here.
However, while running the code, I encountered an error on page-8, under the Dynamics section.
with error :
I think this error is due to the absence of ...
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Number operator
Suppose CR is my creation operator and AR is my annihilation operator.
I have to show that ...
- 1,524
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222
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Stepped Infinite Square Well [closed]
Here is the link for making the above graph for the Stepped infinite square well.
The problem here is, all the eigenfunctions and energy eigenvalues are previously defined. Whereas, I want to use this ...
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How to convert any string of code to an input cell?
This is a generalization of this question, which already has very nice answers.
Suppose str is a string of valid code, so that ...
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2
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How to generate input cells whose code is determined dynamically?
Following this post, I want to use code to generate an input cell with new code. However, unlike the linked post, I want my code to dynamically determine the new code to be printed in the input cell.
...
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Convert boundary condition involving derivative to NeumannValue programmatically
As discussed in e.g.
what causes the error "The dependent variable in the boundary condition needs to be linear" when using NDSolve?
When FiniteElement ...
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Activating part without resolving [[1]]
I'll try to make this question more clear in a little while. In the mean time, I'll ask directly the question which motivated it:
Latin Square from submatrix
Original Question
I want, for instance, ...
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Have Button fire with both Kernel and FrontEnd
Here's some code which, when evaluated, types an expression in the cell below it:
...
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166
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How to use Through by default on numeric functions?
I've used the following code to simulate defining operations between functions:
...
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How to formulate NDSolve[...] for a two-sector SIR model
The following Code aims to simulate the employment effects of a pandemic, drawing on the conventional SIR model. I extended the SIR model with two economic sectors (...
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Is it possible to automate definitions given with TagSetDelayed?
I am using the following two lines of code relatively frequently
f/:Plus[f[x_], f[y_], z___]:=f[x+y]+z
f/:Times[c_, f[x_]]:=f[c x]
and I was wondering if it is ...
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71
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Compiling RiccatiSolve LQRegulator gains
Given some specific matricies, numA, numB, numP, q and r to calculate LQR gains, one can use simply LQRegulatorGains or solve the same via ...
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How to programmatically modify a function definition
I would like to know an efficient method (without converting Mathematica Code to strings and string processing) of modifying a function definition programmatically. For example, I would like to tidy ...
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Turn definitions into rules
I know that this seems to be unnecessary, but here I have a bunch of assignments, like around 50, and I want to create rules for all these to have the freedom to apply these rules only on certain ...
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Microcontrollerkit No longer compiles code after update
I recently restarted a project where I used MicrocontrollerKit to generate code for me into the Wiring language to be then imported into arduino IDE for editing and ...
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Optimal code generation for evaluation of a fixed set of multivariate rational polynomials
Given a set of multivariate rational polynomials, is it possible to find the optimal (shortest or least expensive in some other sense) sequence of arithmetical operations, such that it results in ...
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Assign a variable to a condition only if the condition is met using Which
If I have a conditional of the form:
Which[Round[b[i], 0.1] == 74,1,40 < b[i] < x,2] where b[i] represents a number that ...
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How to solve first order complex differential equation?
I want to solve these differential equations and want to get the value of 'a1'. I used this code given below but it is not showing any result.
If anyone can resolve this will be appreciated.
...
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Understanding code generated by MicrocontrollerEmbedCode
I've been using MicrocontrollerKit for a while now to generate code for little projects, inverse pendulums, filters, etc. Generally it works well.
I am now currently trying to design a LQI (Linear ...
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How can I index a function with the type of dataset used
I have the following code which serves my purpose for a single matrix input. For one or two matrices, the operation can be done manually, but I have 65 matrices and ...
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MWE for compiling functions into standalone DLL and calling them in Python?
I have read calling-a-compiledfunction-dll-from-outside-mathematica and the CodeGeneration tutorial and scanned other related questions too numerous to mention, but I am still unclear about how to ...
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Converting Piecewise function to C code
I'm trying to convert a function to C Code
f = D[Piecewise[{{x^2, -10 < x < 0}, {x, x > 0}}], x]
I decided to scan through conditions and corresponding ...
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Compiled library crashes at WolframLibraryData_new
I am using CreateLibrary to create a dynamic library of a Mathematica function, so that it can be linked into standalone code, but I run into segmentation faults (...
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203
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Easy code help about matrix. How to change the elements in a given matrix?
For example I have a matrix
A[1,1]={1,2,3,4};
Now I want to change the second element of A[1,1] to ...
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How to get a peek at the source code for demonstrations if there is no source code provided [closed]
NOTE: The prequel to my question has been answered before here
In the case of the question linked above, the author's code was available. But I would like to know if it is possible to reveal the code ...
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122
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Solving a difficult differential equation
I've the following DE, describing a physical phenomenon. And the prupose is to solve that DE using Mathematica
$$x(t)\cdot r+x'(t)\cdot l+a\cdot\ln\left(1+\frac{x(t)}{b}\right)=0\space\...
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550
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NDSolveValue solutions differ based on number of equations
Short version: Do the methods (or other things the function uses to solve the equations like time steps or error estimates) that NDSolveValue uses by default depend on the types and quantity of ...
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Making a table of solutions from NSolve or Solve
How can I generate a table of solutions to an equation such as this:
Solve[{a^m+b==c,b-m==a+Sqrt[n]},{a,b}]
for some given values for $n$ and $m$.
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How can I automatically generate usage messages?
When programming, I try and name my functions and arguments clearly and document them with usage:: so I can keep track of everything; e.g.,
...
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Optimizing an expression – find identical subexpressions and substitute them
I'd like to simplify a complex symbolic expression expr by substituting and listing subexpressions that appear more than once in ...
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SymbolicC namespace?
What is the equivalent for C++'s using namespace ...; in SymbolicC package of mathematica and are there any good resources like ...
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Should I implement an iteration with a While-loop? [closed]
I have written a code that uses a guessed eigenvector (avecs) to construct a Hamiltonian (my hamiltonian depends on its own eigenvectors, so I can not solve it directly and I need to use iteration (...
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How to create a file that runs without displaying the code (similar to an .exe)
I am writting a code that could be useful for some people. The program will be free but I would like to protect the code. As I am not good at explaining myself I will simply illustrate my question ...
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Help with NDSolve for system of odes [closed]
Can someone please tell me what I am doing wrong? I am trying to solve a system of odes using NDSolve. The code I have written is as follows:
...
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107
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Division sieve operations in Mathematica
I am just wondering how to easily compute this problem using Mathematica.
What Percent of Even Integers are Divisible by either 6, 20, 28 or 70?
My purpose is to extend this to a finite number of ...
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858
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Write Power in CForm[] as multiplication instead
Is there a simple way to make Mathematica write CForm[p^2] not as Power[p,2] but rather as ...
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Bug: Library functions from older versions of Mathematica may crash in Mathematica 11.1 and conversely
The following is a confirmed bug [CASE:3846875] that turned up in the prerelease 11.1.0 and is not solved in the official release.
This is a small example. Execute the following commands in ...
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SymbolicC`: Is there a CChar, i.e. a way to generate a single character constant?
I am aware of CConstant and CString, but neither can output the single-char literal
'a'
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Applying a function for several sets of input [duplicate]
I'm trying to understand the Wolfram language and copied some examples from the documentation into a workbook and then tried to work through examples of my own. I'm attempting to evaluate a function ...
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What Does Slot Mean In Root Output and How To Translate It To Code? [duplicate]
I have the notebook below which produces the correct numerical output but the CForm function doesn't appear as though it is working correctly (or I don't know how ...
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Metaprogramming: creating compiled functions from inter-dependent code blocks
I want to create a compiled function from inter-dependent code blocks.
Here is a minimal example showing the salient features based on strings:
...
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Christmas fun with Mathematica [closed]
In a previous post we saw how we can create animated snowfall. So, I was wandering what else, related to Christmas, we can do with Mathematica? Perhaps, drawing a tree full of ornaments and lights...
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Writing text inside Venn Diagrams
I found this question which is extremely cool and amazing
How to plot Venn diagrams with Mathematica?
which also helped me in plotting and creating Venn Diagrams.
But there is something that is ...
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OptimizeExpression to C code
Is there a function which turns optimized expression to C code?
Calling
Experimental`OptimizeExpression[ Sin[x] + Cos[Sin[x]]]
returns
...
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Applying And to a list inside a Function
And has HoldAll attribute and test its argument by sequence. But doing And@@{} will lost ...
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