Mallikarjun Yelameli
Kyushu Institute of Technology
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why am I getting error "Undefined function or variable"
Thank you all for replying me so fast and early. The problem is solved when I restarted my computer and then Matlab started doin...
7 years ago | 0
Question
why am I getting error "Undefined function or variable"
I have defined a variable called "bestDimen". There is no error. I crosschecked many times. The script is also correct. It was w...
7 years ago | 2 answers | 0
2
answersQuestion
How to plot 3D scatter plot with legends?
I want to plot 3D scatter plot, change in colour with the label attached to the data point. Is it possible in Matlab or simply s...
8 years ago | 1 answer | 0
1
answerQuestion
How to edit confusion matrix figure in matlab?
For example, I have added a figure of confusion matrix generated in Matlab. I don't want the circled things information. How not...
8 years ago | 1 answer | 0
1
answerQuestion
How to read text file in matlab?
I have a text file. The example file attached here. Could you tell me please how to read it in table format? The 'dlmread' forma...
8 years ago | 1 answer | 0
1
answerQuestion
K-cross validation ANN
Check my following code, if there is any error (may be logical) let me know. Thank You. clc;clear all; close all; %traini...
8 years ago | 0 answers | 0
0
answersQuestion
how to calculate the classification accuracy in neural network toolbox?
net=patternnet(10); [net,tr]=train(net,inputs,targets); outputs=net(inputs); [values,pred_ind]=max(outputs,[],1...
8 years ago | 3 answers | 1
3
answersQuestion
Is it necessary to initialize weights and biases while training neural network? If yes then how to initialize it?
* I am using "patternnet" function for classification purpose. Is it necessary to initialize weights and biases with a proper nu...
8 years ago | 1 answer | 0
1
answerQuestion
How not to normalize the data in patternnet function and how to do K-fold cross validation technique?
I want to do classification using ANN 'patternnent' function. I am new to ANN. I have already normalised data and also divided i...
8 years ago | 1 answer | 0
1
answerQuestion
How to read large size excel files in matlab?
I have a file of 30000 rows and 1026 columns. If I use "xlsread" matlab functions then it takes about 6 to 7 minutes to read. ...
9 years ago | 0 answers | 0
0
answersSolved
Back to basics 1 - Saving
Covering some basic topics I haven't seen elsewhere on Cody. Given an input variable 'x', save it to disk in a file named 'co...
10 years ago
Solved
Who Has the Most Change?
You have a matrix for which each row is a person and the columns represent the number of quarters, nickels, dimes, and pennies t...
10 years ago
Solved
Bullseye Matrix
Given n (always odd), return output a that has concentric rings of the numbers 1 through (n+1)/2 around the center point. Exampl...
10 years ago
Solved
Target sorting
Sort the given list of numbers |a| according to how far away each element is from the target value |t|. The result should return...
10 years ago
Solved
Create a row array using double colon operator
Create a row array from 9 to 1, using the double colon operator.
10 years ago
Solved
Distance walked 1D
Suppose you go from position 7 to 10 to 6 to 4. Then you have walked 9 units of distance, since 7 to 10 is 3 units, 10 to 6 is 4...
10 years ago
Solved
Fahrenheit to Celsius using multiple statements
Given a Fahrenheit value F, convert to a Celsius value C. While the equation is C = 5/9 * (F - 32), as an exercise use two state...
10 years ago
Solved
Return the largest number that is adjacent to a zero
This example comes from Steve Eddins' blog: <http://blogs.mathworks.com/steve/2009/05/27/learning-lessons-from-a-one-liner/ Lear...
10 years ago
Solved
The Goldbach Conjecture
The <http://en.wikipedia.org/wiki/Goldbach's_conjecture Goldbach conjecture> asserts that every even integer greater than 2 can ...
10 years ago
Solved
The Hitchhiker's Guide to MATLAB
Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".
10 years ago
Solved
Which values occur exactly three times?
Return a list of all values (sorted smallest to largest) that appear exactly three times in the input vector x. So if x = [1 2...
10 years ago
Solved
How to find the position of an element in a vector without using the find function
Write a function posX=findPosition(x,y) where x is a vector and y is the number that you are searching for. Examples: fin...
10 years ago
Solved
Circle area using pi
Given a circle's radius, compute the circle's area. Use the built-in mathematical constant pi.
10 years ago
Solved
Reverse the vector
Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]
10 years ago
Solved
Remove the vowels
Remove all the vowels in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill' Output s2 is 'Jck nd Jll wn...
10 years ago
Solved
Simple equation: Annual salary
Given an hourly wage, compute an annual salary by multiplying the wage times 40 and times 50, because salary = wage x 40 hours/w...
10 years ago
Solved
Sort a list of complex numbers based on far they are from the origin.
Given a list of complex numbers z, return a list zSorted such that the numbers that are farthest from the origin (0+0i) appear f...
10 years ago
Solved
Summing digits
Given n, find the sum of the digits that make up 2^n. Example: Input n = 7 Output b = 11 since 2^7 = 128, and 1 + ...
10 years ago
Solved
Return the 3n+1 sequence for n
A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...
10 years ago
