在不打开新的 Matlab 实例的情况下，由外部应用程序调用函数 [英] Call a function by an external application without opening a new instance of Matlab

问题描述

有没有办法从外部调用 Matlab 函数，特别是通过 Windows cmd(还有 Linux 终端、LUA 脚本等)，而无需打开一个新的实例Matlab 每次?

Is there a way to call Matlab functions from outside, in particular by the Windows cmd (but also the Linux terminal, LUA-scripts, etc...), WITHOUT opening a new instance of Matlab each time?

例如在cmd中:

matlab -sd myCurrentDirectory -r "function(parameters)" -nodesktop -nosplash -nojvm

相对较快地打开一个新的 Matlab 实例并执行我的函数.打开和关闭这个简化的 matlab 提示大约需要 2 秒(没有计算)——因此 4000 次执行需要超过 2 小时.我想避免这种情况，因为被调用的函数总是位于同一个工作区中.可以一直在同一个实例中完成吗?

opens a new instance of Matlab relatively fast and executes my function. Opening and closing of this reduced matlab prompt takes about 2 seconds (without computations) - hence for 4000 executions more than 2 hours. I'd like to avoid this, as the called function is always located in the same workspace. Can it be done in the same instance always?

我已经做了一些研究，发现了 MATLAB COM 自动化服务器，但对我来说似乎很复杂，我没有看到使其适用于我的案例的基本步骤.对此有什么建议吗?

I already did some research and found the possibility of the MATLAB COM Automation Server, but it seems quite complicated to me and I don't see the essential steps to make it work for my case. Any advices for that?

我不熟悉 c/c++/c# 但我正在考虑使用 python(但只是在最坏的情况下).

I'm not familiar with c/c++/c# but I'm thinking about the use of python (but just in the worst case).

推荐答案

基于@Ilya Kobelevskiy 提出的不可行但经过深思熟虑的最终解决方案:

Based on the not-working, but well thought, idea of @Ilya Kobelevskiy here the final workaround:

 function pipeConnection(numIterations,inputFile)

 for i=1:numIterations

 while(exist('inputfile','file'))

     load inputfile;
     % read inputfile -> inputdata
     output = myFunction(inputdata);

     delete('inputfile');
 end

 % Write output to file
 % Call external application to process output data
 % generate new inputfile 

 end;

另一个方便的解决方案是编译 Matlab 函数的可执行文件:

Another convenient solution would be to compile an executable of the Matlab function:

mcc -m myfunction

使用cmd运行这个.exe文件:

cd myCurrentDirectory && myfunction.exe parameter1 parameter2

请注意，参数现在作为字符串传递，原始.m 文件需要考虑到这一点进行调整.

Be aware that the parameters are now passed as strings and the original .m-file needs to be adjusted considering that.

补充说明:

• 我猜仍然需要在系统上安装 Matlab，不过没有必要运行它.
• 我不知道这种方法在多大程度上限制了底层功能.
• 与问题中给出的初始方法相比的加速是相对较小

这篇关于在不打开新的 Matlab 实例的情况下，由外部应用程序调用函数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！