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Nirmal


Aktiv seit 2011

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Frage


Canonical Correlation Analysis - canoncorr function in matlab
I am just starting with CCA, I am trying to explore it using the matlab function, but I guess I am stuck understand the result I...

etwa 11 Jahre vor | 1 Antwort | 0

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Understanding output of perfcurve
[X,Y,T,AUC2,OPTROCPT] = perfcurve(classtest,classpredict,2); My classtest as well as classpredict are 460*1, but when i run ...

mehr als 11 Jahre vor | 1 Antwort | 0

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Frage


SVM Error - The first input should be a struct generated by SVMTRAIN
I am getting error using following code with SVM SVMStruct1 = svmtrain(data,class,'kernel_function','linear'); class12=...

mehr als 11 Jahre vor | 0 Antworten | 0

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Beantwortet
What do all these errors mean and is there anything that I can do to prevent/fix this
http://www.mathworks.com/help/matlab/matlab_prog/resolving-out-of-memory-errors.html This might help!

mehr als 11 Jahre vor | 0

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Beantwortet
Error using ==> mtimes Inner matrix dimensions must agree.
pts3 = H*[pts1;ones(1,n)]; if you check the size of H and size of [pts1;ones(1,n)], the no. of columns of H and no. o...

mehr als 11 Jahre vor | 0

Beantwortet
getting rid of a loop
b=[V(:,4) V(:,5) V(:,10) V(:,18)] b will be what you want.

fast 12 Jahre vor | 0

Frage


ROC curve for Decision Tree
I am getting ROC curve for decision tree but I am a bit taken away by the curve. Its similar to the curve, http://ard.bmj.com...

fast 12 Jahre vor | 2 Antworten | 0

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Entering a formula by user
Have a look at eval: http://www.mathworks.com/help/techdoc/ref/eval.html aMatrix = magic(5); expression = input('Ent...

fast 12 Jahre vor | 0

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Beantwortet
Subscript indices must either be real positive integers or logicals; Perimeter issue
plot(x,y((i-1)*5000:i*5000),'g') when i=1, you are indexing y from 0:5000, matlab doesnt have 0 index.

fast 12 Jahre vor | 1

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Beantwortet
Why do I get this response 'Operands to the || and && operators must be convertible to logical scalar values.'?
G=str2num(Grade); G will be a string so you need to convert that to a number using the str2num function. Its better to use...

fast 12 Jahre vor | 0

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Beantwortet
rows which do not contain zero
count=sum(sum(D==0,2)==0) count will be the number of rows which are not all zeros in matrix D.

fast 12 Jahre vor | 0

Beantwortet
Initialization of array of structure
You shouldnt do LD=[], instead you should change the field of each of the structure in the array.

fast 12 Jahre vor | 0

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a simple question about for loop
First of all its loop not loob. I hope you meant range as a variable. the following code should work. for a = (1:10) ...

fast 12 Jahre vor | 0

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xlsread uses ''basic mode'' on windows with excel
I think it is because you used xlsx file if you use xls you should be fine.

fast 12 Jahre vor | 0

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Converting Excel columns to a vector
hf=[]; for i = 1:3 % Loop over the files a = xlsread(dataFiles{i}); % Load the data ...

fast 12 Jahre vor | 0

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creating a string variable to be used in xlswrite
product={'carrots' 'vegetables' 'tomatoes'}; country={'DE' 'FR' 'UK'}; Name={sprintf('Input_%s_%s.xls',count...

fast 12 Jahre vor | 0

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Concatenate Cell Arrays (string and numeric)
a={'john','harry'}; b={'20','30'}; a=strcat(a,'(',b,'%)');

fast 12 Jahre vor | 0

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Concatenate Cell Arrays (string and numeric)
a={'john','harry'}; b={'20','30'}; s='%' for i=1:2 bb=cell2mat(b(1,i)); str=sprintf('(%s%s)',bb,s); ...

fast 12 Jahre vor | 1

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Frage


How to save the plot with two lines
x=rand(1,10); y=1:10; h=plot(x,y,'r',x,y,'g'); saveas(h, 'test','jpg'); I want to save the plot above but i get an...

fast 12 Jahre vor | 1 Antwort | 0

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Read Data from .CSV File
fid = fopen(filename); M=textscan(fid,'%s','collectoutput',1,'headerlines',0); fclose(fid); X=M{1,1}; X wil...

fast 12 Jahre vor | 0

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reading data from dataset.txt
fid = fopen('data.txt'); M=textscan(fid,'%s'); fclose(fid); X=M{1,1} X will have each element includin...

fast 12 Jahre vor | 0

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How to access the variable range for leaf node in decision tree
Had to do little bit of coding but got it anyway. :)

fast 12 Jahre vor | 0

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Random numbergeneration with constraints
What happens if number of columns is something large may be 20? it would definitely cross your constraint of 60. if you plot the...

fast 12 Jahre vor | 0

Frage


How to access the variable range for leaf node in decision tree
I want to access the variable range for each of the leaf node for the decision tree that is created by using classregtree. I can...

fast 12 Jahre vor | 2 Antworten | 0

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Warning on Calling fortran code in Matlab2011a
If I am not wrong, its just the warning. you might wanna try. warning off;

fast 12 Jahre vor | 0

Beantwortet
Multiple outputs from one function?
A simple example of it is: function [a,b]= myfunction(c,d) a=c*d; b=c+d; Function returns a,b.

fast 12 Jahre vor | 1

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Beantwortet
matrix nan
a=[2 3 NaN 5 NaN NaN 9 3 2]; [m,n]=size(a); b=isnan(a); for j=1:n if b(j)==1 li=j-1; ...

fast 12 Jahre vor | 0

Beantwortet
Sorting Matricies
[b,c]=sort(a) b will have the sorted a, while c contains the index. Hope it helps.

fast 12 Jahre vor | 0

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Beantwortet
For an nx3 matrix, order the 3 entries in each row, then order rows from least to greatest, then check for repeated rows.
This should do the job for you. a=rand(5,3); [m,n]=size(a); a=sort(a,2); a=sortrows(a,3); temp=[]; f...

fast 12 Jahre vor | 0

Beantwortet
[Help]+Matrix Operation
b is being used as an index. t is an array with elements incrementing my 0.999, which means b is also an array. Now elements ...

fast 12 Jahre vor | 0

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