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Question


how to reverse matrix?
i want to reverse the order of row or column, example if i have matrix 2 4 7 7 8 5 it will become(column) 7 4 2 ...

environ 11 ans il y a | 1 réponse | 0

1

réponse

Question


how to make histogram?
i have a data of closing price for various stock, i want to make a histogram from it, and i want the histogram to be drawn as on...

plus de 11 ans il y a | 2 réponses | 0

2

réponses

Question


how to find lambda from this formula?
det (A - lambda * I) = 0 where: A= a square matrix, ex: [2 5 4;8 6 9;3 4 6] I= identity matrix

plus de 11 ans il y a | 1 réponse | 0

1

réponse

Question


how to remove some row or column of a matrix at once?
lets say i have a 100x100 matrix and i want to remove row 71-100 so it become 100x70 matrix

plus de 11 ans il y a | 2 réponses | 0

2

réponses

Question


how to add string matrix to numeric matrix?
example: from a=[rice;corn;wheat] b=[3;4;3] become c=[rice 3;corn 4;wheat 3]

plus de 11 ans il y a | 3 réponses | 0

3

réponses

Question


what is the meaning of this?
Parse error at '=':usage might be invalid MATLAB syntax.

plus de 11 ans il y a | 1 réponse | 0

0

réponse

Question


how to create matrix of string and use it in mathematic operation?
example a=[1;0;1;1;0] b=[ben;james;mike;ralph;will] c=a.*b c=[ben;mike;ralph]

plus de 11 ans il y a | 2 réponses | 0

2

réponses

Question


how to find maximum or minimum element in a matrix?
example a=5 b=8 c=2 d=6 x=[a b c d] how to find minimum or maximum element of matrix x? the answer i want is its variab...

plus de 11 ans il y a | 3 réponses | 0

3

réponses

Question


how to find matrix in a matrix?
i have matrix a and b. matrix b is created from matrix a components(rows in this case). now i want to find out from which row of...

plus de 11 ans il y a | 1 réponse | 0

1

réponse

Question


can someone tell me whats wrong with my coding?
i make this, and it work just fine clear all clc load matrix4; b=a [x,y]=size (b) d=9999999999999999999999...

plus de 11 ans il y a | 1 réponse | 0

1

réponse

Question


matrix, using variables like a1,a2,a3,...an, minimum
how to take matrix element (i.e row) one by one and save each new matrices in a new variable example: original matrix: a=...

environ 12 ans il y a | 3 réponses | 0

3

réponses

A répondu
matrix manipulation
can someone help me?

environ 12 ans il y a | 0

Question


matrix manipulation
how to take matrix element (i.e row) one by one and save each new matrices in a new variable example: original matrix: a=[2...

environ 12 ans il y a | 3 réponses | 0

3

réponses

Question


invers from covariance of a matrix*matrix'
given a is a matrix, is the matrix of covariance of (a*a') is always singular?

plus de 12 ans il y a | 2 réponses | 0

2

réponses

Question


normal distribution test
i have historic data (daily) of 30 stock from 250 day (i make 30x250 matrix from it), now i want to test whether this data is no...

plus de 12 ans il y a | 5 réponses | 1

5

réponses

Question


matrix manipulation
how to remove row(s) or column(s) of a matrix and save the new matrix with different name? and is there any limit on how big of...

plus de 12 ans il y a | 1 réponse | 0

1

réponse

Question


how to count row and column of a matrix
if i have a big matrix and i don't know its size, how to find out its size? and how to save it as variable?

plus de 12 ans il y a | 3 réponses | 1

3

réponses

Question


how to extract matrix column and make new matrixes from the extracted column?
how to extract matrix column and make new matrixes from the extracted column? if you name the column a, b, and c then i want to ...

plus de 12 ans il y a | 2 réponses | 0

2

réponses