‘function’ 在Octave中未定义

huangapple
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英文:

'function' undefined in Octave

问题

以下是您要翻译的内容：

"I'm writing a script, and I have two functions. The first one was working fine. Now I added a second one (that is called before the first one) and I get the error stated in title.

I already had the "dummy" (1;) at the beginning of the script to start the file with function declarations.

Here's the code (until the error, it's not complete):"

  1. 1;
  2. %%=========插值函数=================
  3. function Y=interpdata(x1,y1,x2,y2,X)
  4.     Y=interp1([x1,x2],[y1,y2],X);
  5. endfunction
  6. %%=====插值函数结束==============
  8. %%=========最小均方回归函数=============
  9. function coef=LMSregression(mat,size_)
  10.     sumX2=0;
  11.     sumXY=0;
  12.     sumX=0;
  13.     sumY=0;
  14.     for i=1:size_
  15.         sumX=sumX+mat(i,1);
  16.         sumY=sumY+mat(i,2);
  17.         sumX2=sumX2+mat(i,1)*mat(i,1);
  18.         sumXY=sumXY+mat(i,1)*mat(i,2);
  19.     endfor
  20.     slope = (size_ * sumXY - sumX * sumY) /(size_ * sumX2 -sumX * sumX);
  21.     b = sumY/size_ - slope * sumX/size_;
  22.     coef = [slope b];
  23. endfunction
  24. %%=======最小均方回归函数结束========
  26. clear all;
  28. %%============校准和分割============
  29. data_ = dlmread ("mono00.txt", ";");
  30. size_data=size(data_);
  32. counter1=1;
  33. counter2=1;
  34. counter3=1;
  35. for i=1:size_data(1)
  36.     if data_(i,1)==1
  37.         zone1(counter1,:)=data_(i,:);
  38.         counter1=counter1+1;
  39.     elseif data_(i,1)==2
  40.         zone2(counter2,:)=data_(i,:);
  41.         counter2=counter2+1;
  42.     elseif data_(i,1)==3
  43.         zone3(counter3,:)=data_(i,:);
  44.         counter3=counter3+1;
  45.     endif
  46. endfor
  47. %%======校准和分割结束===========
  49. %%=================数据清理和排序============
  50. zone1=[zone1(:,2) zone1(:,6) ];                       
  51. zone2=[zone2(:,2) zone2(:,6) ];                       
  52. zone3=[zone3(:,2) zone3(:,6) ];
  53. zone1=sortrows(zone1, 1);
  54. zone2=sortrows(zone2, 1);
  55. zone3=sortrows(zone3, 1);
  56. size_zone1=counter1-1;
  57. size_zone2=counter2-1;
  58. size_zone3=counter3-1;
  59. %%===========数据清理和排序结束===========
  61. %%=================LMS回归==============
  62. coefs=zeros(3,2);
  63. coefs(1,:)=LMSregression(zone1, size_zone1);    <----错误: 'LMSregression' 在第69行附近未定义，列12
  64. X1=linspace(min(zone1(:,1)), max(zone1(:,1)),100);
  65. coefs(2,:)=LMSregression(zone2, size_zone2);
  66. X2=linspace(min(zone2(:,1)), max(zone2(:,1)),100);
  67. coefs(3,:)=LMSregression(zone3, size_zone3);
  68. X3=linspace(min(zone3(:,1)), max(zone3(:,1)),100);
  69. %%=============LMS回归结束==============
英文:

I'm writing a script, and I have two functions. The first one was working fine. Now I added a second one (that is called before the first one) and I get the error stated in title.

I already had the "dummy" (1;) at the beginning of the script to start the file with function declarations.

Here's the code (until the error, it's not complete):

  1. 1;
  2. %%=========INTERPOLATION FUNCTION=================
  3. function Y=interpdata(x1,y1,x2,y2,X)
  4. Y=interp1([x1,x2],[y1,y2],X);
  5. endfunction
  6. %%=====end of INTERPOLATION FUNCTION==============
  7. %%=========LEAST MEAN SQUARE FUNCTION=============
  8. function coef=LMSregression(mat,size_)
  9. sumX2=0;
  10. sumXY=0;
  11. sumX=0;
  12. sumY=0;
  13. for i=1:size_
  14. sumX=sumX+mat(i,1);
  15. sumY=sumY+mat(i,2);
  16. sumX2=sumX2+mat(i,1)*mat(i,1);
  17. sumXY=sumXY+mat(i,1)*mat(i,2);
  18. endfor
  19. slope = (size_ * sumXY - sumX * sumY) /(size_ * sumX2 -sumX * sumX);
  20. b = sumY/size_ - slope * sumX/size_;
  21. coef = [slope b];
  22. endfunction
  23. %%=======end of LEAST MEAN SQUARE FUNCTION========
  24. clear all;
  25. %%============CALIBRATION AND DIVISION============
  26. data_ = dlmread ("mono00.txt", ";");
  27. size_data=size(data_);
  28. counter1=1;
  29. counter2=1;
  30. counter3=1;
  31. for i=1:size_data(1)
  32. if data_(i,1)==1
  33. zone1(counter1,:)=data_(i,:);
  34. counter1=counter1+1;
  35. elseif data_(i,1)==2
  36. zone2(counter2,:)=data_(i,:);
  37. counter2=counter2+1;
  38. elseif data_(i,1)==3
  39. zone3(counter3,:)=data_(i,:);
  40. counter3=counter3+1;
  41. endif
  42. endfor
  43. %%======end of CALIBRATION AND DIVISION===========
  44. %%=================DATA CLEAN AND SORT============
  45. zone1=[zone1(:,2) zone1(:,6) ];                       
  46. zone2=[zone2(:,2) zone2(:,6) ];                       
  47. zone3=[zone3(:,2) zone3(:,6) ];
  48. zone1=sortrows(zone1, 1);
  49. zone2=sortrows(zone2, 1);
  50. zone3=sortrows(zone3, 1);
  51. size_zone1=counter1-1;
  52. size_zone2=counter2-1;
  53. size_zone3=counter3-1;
  54. %%===========end of DATA CLEAN AND SORT===========
  55. %%=================LMS REGRESSION=================
  56. coefs=zeros(3,2);
  57. coefs(1,:)=LMSregression(zone1, size_zone1);    <----error: 'LMSregression' undefined near line 69, column 12
  58. X1=linspace(min(zone1(:,1)), max(zone1(:,1)),100);
  59. coefs(2,:)=LMSregression(zone2, size_zone2);
  60. X2=linspace(min(zone2(:,1)), max(zone2(:,1)),100);
  61. coefs(3,:)=LMSregression(zone3, size_zone3);
  62. X3=linspace(min(zone3(:,1)), max(zone3(:,1)),100);
  63. %%=============end of LMS REGRESSION==============

It's probably a minor bug, but I can't find anything anywhere. Every post just talks about the need for a dummy, and that's not it in this case.

答案1

得分: 1

就像用户@PierU在评论中所说：问题在于clear all也会清除函数。

多位用户表示应该使用clear代替。

英文:

Like the user @PierU stated in the comments: the problem is that the clear all clears the functions as well.

Multiple users stated that clear should be used instead.

huangapple
  • 本文由 发表于 2023年7月6日 15:15:39
  • 转载请务必保留本文链接：https://go.coder-hub.com/76626353.html
  • matlab
  • octave
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