photo

Nirmal


Attivo dal 2011

Followers: 0   Following: 0

Messaggio

Statistica

All
  • Knowledgeable Level 3
  • First Review
  • First Submission
  • 3 Month Streak
  • Thankful Level 3
  • Revival Level 1
  • Knowledgeable Level 2
  • First Answer
  • Solver

Visualizza badge

Feeds

Visto da

Domanda


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...

oltre 11 anni fa | 1 risposta | 0

1

risposta

Domanda


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 ...

circa 12 anni fa | 1 risposta | 0

1

risposta

Domanda


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=...

circa 12 anni fa | 0 risposte | 0

0

risposte

Risposto
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!

oltre 12 anni fa | 0

| accettato

Risposto
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...

oltre 12 anni fa | 0

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

oltre 12 anni fa | 0

Domanda


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...

oltre 12 anni fa | 2 risposte | 0

2

risposte

Risposto
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...

oltre 12 anni fa | 0

| accettato

Risposto
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.

oltre 12 anni fa | 1

| accettato

Risposto
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...

oltre 12 anni fa | 0

| accettato

Risposto
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.

oltre 12 anni fa | 0

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

oltre 12 anni fa | 0

Risposto
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) ...

oltre 12 anni fa | 0

Risposto
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.

oltre 12 anni fa | 0

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

oltre 12 anni fa | 0

| accettato

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

oltre 12 anni fa | 0

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

oltre 12 anni fa | 0

Risposto
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); ...

oltre 12 anni fa | 1

| accettato

Domanda


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...

oltre 12 anni fa | 1 risposta | 0

1

risposta

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

oltre 12 anni fa | 0

Risposto
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...

oltre 12 anni fa | 0

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

oltre 12 anni fa | 0

| accettato

Risposto
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...

oltre 12 anni fa | 0

Domanda


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...

oltre 12 anni fa | 2 risposte | 0

2

risposte

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

oltre 12 anni fa | 0

Risposto
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.

oltre 12 anni fa | 1

| accettato

Risposto
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; ...

oltre 12 anni fa | 0

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

oltre 12 anni fa | 0

| accettato

Risposto
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...

oltre 12 anni fa | 0

Risposto
[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 ...

oltre 12 anni fa | 0

Carica altro