convert m file into simulink model

Hallo everyone!

I want to convert a m file into simulink model, which will be later connected with Digsilent Power Factory.I chose matlab funtion.

treeensmeble is a struct and I have already saved it as a mat file. It has two feild in treeensemble, I just use one "trees". I want to load it into the funtion. But there is an error: Undefined function or variable 'treeensemble'.

The code is as below:

function [YTS]=rtenspred(XTSA)

coder.extrinsic('load')

load treeensemble

    verbose=0;
    persistent XTS;
    persistent tree;  
    XTS=XTSA;
    Nts=size(XTS,1);
    T=length(treeensemble.trees);

    YTS=0;

    for t=1:T
      if (verbose)
        fprintf('t=%d\n',t);
      end
      tree=treeensemble.trees(t);
      YTS=YTS+tree.weight*rtpred();
    end

Answer 1

[Walter Roberson]

data = load('treeensemble.mat');
treeensemble = data.treeensemble;

[hong yang]

Thanks for your answer. But when I use this code, it seems still be an error as below:

Attempt to extract field 'treeensemble' from 'mxArray'.

Is this a problem with struct type variable?

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/122471-attempt-to-extract-field-value-from-mxarray

I think to fix this, you are going to first assign treeensemble a struct() . I do not know if

treeensemble = struct();

will be enough, or if you will need to assign it with all of the fields, something like

treeensemble = struct('trees', [], 'weights', []);