Hello,
I try to use the matlab toolbox in order to call OpenFast from MATLAB.
First, I run the example (I have changed the path of openfast.exe & the .fst file) but it gives me an error.
The figure below shows the error i obtain.
Does anyone encounter the same problem ?
Best Regards,
Riad
Dear @Riad.Elhamoud,
I don’t see that you’ve shared the code you are using to call OpenFAST from MATLAB; please clarify.
Best regards,
Dear @Jason.Jonkman ,
Thank you for your reply. You can find below the code that i am using (i put the code in bold and sorry it is messy: it contains a lot of comments):
**%% Documentation **
% Example script to run a set of FAST simulations using FAST exe.
%
**% NOTE: This script is only an example. **
% The example data is suitable for a given version of OpenFAST and might need to be adapted
**% **
% Adapt this script to your need, by calling the different subfunctions presented.
%
%% Initialization
restoredefaultpath;
addpath(genpath(“C:\Users\1oRs5\Desktop\these_dr_rabih\thèse_dr_rabih\MDOF_calcul\matlab-openfast-toolbox\matlab-toolbox-main\Utilities”)); % TODO adapt me
%% Parameters
FASTexe=“C:\Users\1oRs5\Desktop\openfast\openfast_x64.exe”;
% FASTexe = ‘…/…/_ExampleData/openfast3.0_x64s.exe’; % path to an OpenFAST executable
OUText = ‘.outb’; % Output extension
FSTfilenames=“C:\Users\1oRs5\Desktop\openfast\r-test-061441958a2eef7f494d69ee097f8ec050d5a129\glue-codes\openfast\5MW_OC3Spar_DLL_WTurb_WavesIrr\5MW_OC3Spar_DLL_WTurb_WavesIrr.fst”;
% FSTfilenames={ % path to OpenFAST input files
% ‘…/…/_ExampleData/5MW_Land_Simulations/Main_5MW_Land_8mps.fst’,
% ‘…/…/_ExampleData/5MW_Land_Simulations/Main_5MW_Land_10mps.fst’,
% };
**%% Run FAST an all fst files **
runFAST(FSTfilenames, FASTexe); %, ‘flag’,‘-VTKLin’);
%% List of output files
OUTfilenames = cellfun(@(s)strrep(s,‘.fst’,OUText), FSTfilenames, ‘UniformOutput’,false);
for i = 1:length(OUTfilenames)
** if ~exist(OUTfilenames{i},‘file’)**
** warning(‘Simulation failed: %s’, FSTfilenames{i})**
** end**
end
Best Regards,
Riad
Try putting your input filename in a cell array, i.e.:
FSTfilenames={“C:\Users\1oRs5\Desktop\openfast\r-test-061441958a2eef7f494d69ee097f8ec050d5a129\glue-codes\openfast\5MW_OC3Spar_DLL_WTurb_WavesIrr\5MW_OC3Spar_DLL_WTurb_WavesIrr.fst”};
Best regards,
Thank you for your reply !
I tried your suggestion but unfortunately, it does not work 
I ran through Mathworks forums: i left FSTfilenames without brackets and i make changes in runCommands
I replace the commented expression by the expression right below (i add brackets). But, always, i have an error.
Best Regards,
Riad
To debug, you can remove the semicolon ; from line 25 (where you set sCmd) in the runCommands.m function. It might be better to debug what commands are getting generated in runFAST.m so that you can see what command and filenames are being sent to runCommands.
However, I suspect the problem is that you have used double quotes " " instead of single quotes ' ' in creating the cell array of FSTfilenames. The double quotes creates a string object instead of a character array. (Notice that the example uses the form FSTfilenames={'…/…/_ExampleData/5MW_Land_Simulations/Main_5MW_Land_10mps.fst'}
Dear @Bonnie.Jonkman and community,
The function runFAST.m in the matlab toolbox : matlab-toolbox/Utilities/runFAST.m at main · OpenFAST/matlab-toolbox · GitHub should be modified. In its current syntax, it does not work when i try to execute it using MATLAB R2021a.
In the function, line 47 which is:
sCmd= [FASTexe ’ ’ opts.flag ’ ’ FASTfile];
should be replaced by:
sCmd= strcat(FASTexe," “,opts.flag,” ",FASTfile);
After the modification, it works for me. Here a screen capture:
Best Regards,
Riad
Dear @Riad.Elhamoud,
Thanks for sharing. I’m not sure why the original calculation of sCmd does not work (what does the calculation set sCmd to?), but if the new calculation solves the problem; great!
Best regards,
