Question

我在matlab 2015b中使用库编译器编译了matlab函数，我怀疑pca函数是异常的来源，因为我已经做了一个简单的添加函数并且执行没有任何问题，我该如何执行pca函数？？

Matlab功能：

function [ COEFF,SCORE,latent] = ACP( path )

 Data = fileread(path);
 Data = strrep(Data, ',', '.');
 FID = fopen('comma2pointData.txt', 'w');
 fwrite(FID, Data, 'char');
 fclose(FID);
 Data=importdata('comma2pointData.txt','\t');

[COEFF,SCORE,latent] = pca(Data);

end

Java代码：

    String path = "/Desktop/datamicro.txt";
    Object[] result = null;
    acpClass acp = null;

        try {                
            acp = new acpClass();
            result=acp.ACP(3, path);
        } catch (MWException ex) {
            Logger.getLogger(CalculAcpFrame.class.getName()).log(Level.SEVERE, null, ex);

        } finally {

            MWArray.disposeArray(result);
            acp.dispose();

        }

datamicro.txt

    0,25    0,16    0,95    0,53    0,22    1,17    549,00  
    0,20    0,06    0,39    0,62    0,18    1,09    293,25  
    0,16    0,05    0,31    0,39    0,14    0,78    935,00  
    0,19    0,06    0,40    0,62    0,23    1,14    380,00

例外：

  Caught "std::exception" Exception message is:
  Timed out waiting for Thread to Process
  avr. 06, 2017 11:59:57 PM microarchi_proj.Microarchi_proj main
  GRAVE: null
  ... Matlab M-code Stack Trace ...
  com.mathworks.toolbox.javabuilder.MWException: Timed out waiting for Thread to Process
    at com.mathworks.toolbox.javabuilder.internal.MWMCR.mclFeval(Native Method)
    at com.mathworks.toolbox.javabuilder.internal.MWMCR.access$600(MWMCR.java:31)
    at com.mathworks.toolbox.javabuilder.internal.MWMCR$6.mclFeval(MWMCR.java:861)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at com.mathworks.toolbox.javabuilder.internal.MWMCR$5.invoke(MWMCR.java:759)
    at com.sun.proxy.$Proxy0.mclFeval(Unknown Source)
    at com.mathworks.toolbox.javabuilder.internal.MWMCR.invoke(MWMCR.java:427)
    at ACPFunction.acpClass.ACP(acpClass.java:210)
    at microarchi_proj.Microarchi_proj.main(Microarchi_proj.java:1145)

Answer 1

<强>编辑：

提供数据后，代码已经过编辑以适应数据格式化。

编辑后的代码是：

function [ COEFF,SCORE,latent] = ACP(path)
%% Reading file as a string
Data = fileread(path);

%% Converting comma decimal to point decimal values
Data = strrep(Data, ',', '.');

%% writing point decimal values to new file
FID = fopen('comma2pointData.txt', 'w');
fwrite(FID, Data, 'char');
fclose(FID);
% Delete unwanted variables
clear Data FID

%% Reading new file
nData=importdata('comma2pointData.txt','\t');

% determin rows and columns
rows = length(nData);
[~,columns] = size(strsplit(nData{1},'    '));
b = zeros(rows,columns);

% 
for row = 1:rows
line = nData{row};
a = strsplit(line,'    ');
b(row,:)=cellfun(@str2num,a); 
end

% Delete unwanted variables
clear nData a line row rows columns

%% Calling pca function
[COEFF,SCORE,latent] = pca(b);

% Delete unwanted variables
clear b

% End of Function
end

我希望它能解决你的问题。

从java调用matlab函数时的异常

1 个答案: