Community Profile

photo

maryam


Active since 2013

Statistics

  • Thankful Level 2

View badges

Content Feed

View by

Question


how i should enter the inputs, train and test data in a fuzzy model?
hi i used fuzzy logic toolbox for prediction. there are 7 inputs which are data like maximum, average, etc. the inputs are time ...

5 years ago | 0 answers | 0

0

answers

Question


mix two matrices to create new one
hi friends. i have two matrices A and B as follows: A=[A1;A2;....;A10] and B=[B1;B2;....;B10]; i want to create 10 new matrice...

6 years ago | 1 answer | 0

1

answer

Question


find the probability in normal distibution
hi everyone. i have two normal distribution curves which met each other at two points A and B. how can i find these two points a...

6 years ago | 2 answers | 0

2

answers

Question


my computer shuts down when i run a matlab code
hi everybody since yesterday i have been trying to run a matlab code (feature extraction using pca). the original matrix is 819...

6 years ago | 1 answer | 0

1

answer

Question


How can i divide a (matrix) into two parts
i have a 300*10 matrix. i want to divide it into two parts. the size of desired parts are 240*10 and 60*10 respectively. A=...

6 years ago | 2 answers | 0

2

answers

Question


how to choose matrix columns randomly?
hi all. i have two related matrices (A and B). i want to choose randomly 80% of one matrix's columns (e.g A) and corresponding v...

6 years ago | 3 answers | 0

3

answers

Question


improve the performance of nprtool
I used the neural network toolbox ( nprtool ) for classifying my objects. i used 75% of data for training and 15% for both valid...

6 years ago | 2 answers | 0

2

answers

Question


how to cluster using matlab
hi all. im completely new in clustering!would you please explain to me how i can cluster a 8191*300 matrix into 3 groups? thank...

6 years ago | 1 answer | 1

1

answer

Question


change the order of columns in a matrix
hi friends. i have a 8000*300 matrix. i want to change the order of columns so that the most similar columns stand together. co...

6 years ago | 1 answer | 0

1

answer

Question


replace "inf " with a value
hi all. i have a 8192*300 matrix. some of its elements are "inf". i want to replace these values with average of cells before a...

6 years ago | 1 answer | 0

1

answer

Question


How to create an envelope on a specific signal
could anybody please guide me how i can find the lower & upper envelope on a signal? would you give me a simple example?thank yo...

6 years ago | 1 answer | 0

1

answer

Question


Intelligent algorithm for classification
hi everybody. i need to classify some data using an algorithm such as neural network. but as you know it doesnt accept inf valu...

6 years ago | 1 answer | 0

1

answer

Question


replacing the NAN with value
hi. i have 2 matrices V & I. some elements of I are zero. then R=V/I returns unavailable values. i need to keep the size of 3 ...

6 years ago | 4 answers | 0

4

answers

Question


how to use xlsread for creating new matrices?
I have 1000 excel files (named H) and need to import the parameters of sheet 2 (named Q) to 1000 new matrices in matlab for anal...

7 years ago | 2 answers | 0

2

answers

Question


how to apply Sgolayfilter
hi, i have a noisy signal with sampling frequency of 2*10^5 and nominal frequency of 50 hz. i want to apply sgolay filter to sm...

7 years ago | 2 answers | 0

2

answers

Question


finding data of a plot
hi. i have a plot like this and want to find these data value. i use "save work space as" and save data in a .mat file. but whe...

7 years ago | 1 answer | 0

1

answer

Answered
how to find non zero minimum
this is simple :) name the matrix A (for example) then : m=min(A(A>0)); m returns the non zero minumum

7 years ago | 24

| accepted

Question


how to find non zero minimum
hi, i have a [8200,1] matrix with zero and positive values. i need to find non zero minimum. please guide me if you can

7 years ago | 3 answers | 0

3

answers

Question


add xy coordinates to a graph
<</matlabcentral/answers/uploaded_files/312/untitled.jpg>> hi, i have a graph like this picture, local maxmimus are shown wit...

8 years ago | 1 answer | 0

1

answer

Question


add data points to a graph
hi i have a matlab figure, and i'd like to highlight some important points on it, could anybody help me? tnx in advance

8 years ago | 2 answers | 0

2

answers

Question


save matlab output to excel
hi i have some data in command window like: n x y 1 9 7 2 2.5 3 3 45 23 ...

8 years ago | 1 answer | 0

1

answer

Question


add vertical lines to an image
i've loaded an image and i'd like to add some vertical lines on it,could anybody help me? the image is voltage curve and i need ...

8 years ago | 2 answers | 0

2

answers