MATLAB coder alternatives for textread.

Question

Raghav Rathi 2021-7-12

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/876908-matlab-coder-alternatives-for-textread

评论： Raghav Rathi 2021-7-13

Hi,

I am trying to convert my matlab project to C++ using the coder but I am facing problems with reading some text files. After reading around I learned that Coder does not support textscan() or fgetl() or fgets() or fgetc() or fscanf() or sscanf() .

I am not that experienced with matlab so now I am stuck at this point.

I have files that contain complex numbers in the following format

-0.00006 +0.00027 
-0.00018 -0.00009 
-0.00015 -0.00003 
-0.00009 +0.00006 
-0.00018 -0.00003 
-0.00012 +0.00003 
+0.00006 +0.00009 
+0.00000 +0.00018 
-0.00006 -0.00003 
+0.00006 +0.00006 
+0.00009 +0.00000 
+0.00000 +0.00000 
+0.00003 -0.00003 
+0.00003 +0.00012 
+0.00012 -0.00003 
+0.00003 -0.00003 
-0.00012 -0.00006 
-0.00015 -0.00006 

Which I am trying to read into an array. And then some files in the following format.

1
2,1
3,2,1
4,3,1,2
2,1,5,4,3
5,1,6,4,2,3
4,6,7,5,2,1,3
6,1,4,5,2,8,7,3
7,6,2,9,8,4,1,3,5
9,10,4,6,8,2,5,3,1,7
11,6,4,3,1,8,5,7,2,10,9
.
.
.
.

What are some ways in which I can read these files into an array which is also accesptable by MATLAB coder. Any help is appreciated.

Thank you

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Answer 1

Darshan Ramakant Bhat 2021-7-13

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/876908-matlab-coder-alternatives-for-textread#answer_745408

Below is the list of functions supported by MATLAB Coder as of latest release :

https://www.mathworks.com/help/coder/ug/functions-and-objects-supported-for-cc-code-generation.html

I can see that MATLAB Coder does support "fscanf" with some limitations, please read the "Extended capability" section in the doc for more info :

https://www.mathworks.com/help/matlab/ref/fscanf.html#mw_6ab532dc-d5e8-44b2-9070-f341f37dea44

Hope this will be helpful.

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Raghav Rathi 2021-7-13

Thanks @Darshan Ramakant Bhat for point this out (https://www.mathworks.com/help/matlab/ref/fscanf.html#mw_6ab532dc-d5e8-44b2-9070-f341f37dea44). I was able to get it working.

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Answer 2

dpb 2021-7-12

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/876908-matlab-coder-alternatives-for-textread#answer_745268

https://www.mathworks.com/matlabcentral/answers/461159-read-text-file-line-by-line-in-deployed-application#answer_374294

indicates beginning with R2019b Coder does support the above functionality albeit behavior may be different than that inside MATLAB, reverting to the base C language behavior.