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Nirmal


Active since 2011

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Question


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...

más de 8 años ago | 1 answer | 0

1

answer

Question


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 ...

alrededor de 9 años ago | 1 answer | 0

1

answer

Question


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=...

alrededor de 9 años ago | 0 answers | 0

0

answers

Answered
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!

más de 9 años ago | 0

| accepted

Answered
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...

más de 9 años ago | 0

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

más de 9 años ago | 0

Question


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...

más de 9 años ago | 2 answers | 0

2

answers

Answered
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...

más de 9 años ago | 0

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Answered
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.

más de 9 años ago | 1

| accepted

Answered
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...

más de 9 años ago | 0

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Answered
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.

más de 9 años ago | 0

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

más de 9 años ago | 0

Answered
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) ...

más de 9 años ago | 0

Answered
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.

más de 9 años ago | 0

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

más de 9 años ago | 0

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

más de 9 años ago | 0

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

más de 9 años ago | 0

Answered
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); ...

más de 9 años ago | 1

| accepted

Question


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...

más de 9 años ago | 1 answer | 0

1

answer

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

más de 9 años ago | 0

Answered
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...

más de 9 años ago | 0

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

más de 9 años ago | 0

| accepted

Answered
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...

más de 9 años ago | 0

Question


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...

más de 9 años ago | 2 answers | 0

2

answers

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

más de 9 años ago | 0

Answered
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.

más de 9 años ago | 1

| accepted

Answered
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; ...

más de 9 años ago | 0

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

más de 9 años ago | 0

| accepted

Answered
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...

más de 9 años ago | 0

Answered
[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 ...

más de 9 años ago | 0

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