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matrix decomposition - CHOLMOD in Java

I asked already something similar, but this time I will be more specific. I need to perform, within a for ... thorough feedback on this matter. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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matrix - C++ overload operator [ ][ ]

I have class CMatrix, where is "double pointer" to array of values. class CMatrix { public: int rows, cols ... your help I really appreciate it! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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matrix - How to select a submatrix (not in any particular pattern) in Matlab

How to select a submatrix (not in any pattern) in Matlab? For example, for a matrix of size 10 by 10 ... ? Thanks for any helpful answers! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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matrix - Is MATLAB row specific or column major?

In MATLAB, we can operate on both rows and columns of a matrix. What does it exactly mean by "row major" or "column major"? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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828 views

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matrix - Android: How to rotate a bitmap on a center point

I've been looking for over a day for a solution to this problem but nothing helps, even the answers here. ... and push me in the right direction? :) Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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882 views

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matrix - Very large matrices using Python and NumPy

NumPy is an extremely useful library, and from using it I've found that it's capable of handling matrices ... way (without having several terrabytes of RAM)? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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957 views

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matrix - R memory management / cannot allocate vector of size n Mb

I am running into issues trying to use large objects in R. For example: > memory.limit(4000) > a = ... [1] stats graphics grDevices utils datasets methods base Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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689 views

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matrix - R: How do you use ncol() dynamically in lapply?

I am trying to add a row NewRow to each matrix in a list mylist. NewRow should be a vector of integers from ... .com/questions/65850066/r-how-do-you-use-ncol-dynamically-in-lapply...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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753 views

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matrix - How to "join" sub-matrices to create larger matrices on Python?

For $m < n$ suppose I have sampled a $m imes m$ random matrix and a $m imes (n-m)$ random matrix. I ... /65850975/how-to-join-sub-matrices-to-create-larger-matrices-on-python...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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566 views

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matrix - Representation of multi-dimensional arrays in memory

I would like to know how multi-dimensional arrays/matrices are represented in memory. From other posts ... /questions/65854603/representation-of-multi-dimensional-arrays-in-memory...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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758 views

1 answer

matrix - SCNView hittest return nothing when I change projectionTransform of camera

After I changed the camera.projectonTransfrom, hitTest returns empty. I changed the projectonTransfrom from ... return-nothing-when-i-change-projectiontransform-of-camera...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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699 views

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matrix - How to effectively combine disconnected csr matrices in python?

I have two scipy sparse matrices matrix_1 and matrix_2. Their dimensions are as follows: <628x628 sparse matrix ... /how-to-effectively-combine-disconnected-csr-matrices-in-python...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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552 views

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matrix - Test bench for a array of input system verilog

Can someone please help me with the testbench for this code? This seems to work correct with a 10X10 matrix ... questions/65898936/test-bench-for-a-array-of-input-system-verilog...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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610 views

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matrix - call to gsl_blas_dgemm() isn't working as expected

I am working on a problem that requires solving 3 simultaneous equations of 3 variables. Reading: https://www. ... /65927354/call-to-gsl-blas-dgemm-isnt-working-as-expected...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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586 views

1 answer

matrix - Calculate and show % of total of 1 category in powerbi

Please can you assist, I have a demographic table in power bi and I am required to only show the % of ... questions/65931819/calculate-and-show-of-total-of-1-category-in-powerbi...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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535 views

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matrix - Hi, I'm new to programming, how do I execute this code?

def cubomagico (matriz,fil,col,c,n): if(c==n*n): matriz[n-1][col]=c else: if(fil<0 and col==n): ... .com/questions/65946147/hi-im-new-to-programming-how-do-i-execute-this-code...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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521 views

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matrix using pointers c++ without dynamic allocation

So i have an assigment that would read a matrix using pointers and show it using pointers also i wanna ... com/questions/65541016/matrix-using-pointers-c-without-dynamic-allocation...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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584 views

1 answer

matrix - Tried taking single char, printing the signs directly and diving the numbers. Wont WORK with double digits. (PYTHON 3)

Normalizing Matrices(Python) Given N number of matrices, normalize them by diving each number in every matrix by 2. ... -char-printing-the-signs-directly-and-diving-the-numbers-wo...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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684 views

1 answer

matrix - HOW TO POPULATE A 2D EMPTY NUMPY ARRAY WITH INFORMATION IN 1D NUMPY ARRAY

I have a 2D Zero Matrix with a size of 1000 x 1000. I have a seperate 1D list of size 1000 X 1 including ... -to-populate-a-2d-empty-numpy-array-with-information-in-1d-numpy-array...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

869 views

1 answer

matrix - is there a way to use least squares for 2 arrays in python?ValueError: too many values to unpack (expected 2)

import matplotlib.pyplot as plt x =np.array([[65, 53, 73, 53, 14, ], [46, 70, 72, 19, 32], [22, 76 ... is-there-a-way-to-use-least-squares-for-2-arrays-in-pythonvalueerror-too-many...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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864 views

1 answer

matrix - is there a way to use least squares for 2 arrays in python?ValueError: too many values to unpack (expected 2)

import matplotlib.pyplot as plt x =np.array([[65, 53, 73, 53, 14, ], [46, 70, 72, 19, 32], [22, 76 ... is-there-a-way-to-use-least-squares-for-2-arrays-in-pythonvalueerror-too-many...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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586 views

1 answer

matrix - Bezier curve method drawing wrong in java

Basically i have made code to draw Bezier curves but there is something wrong with it, it is not drawing ... .com/questions/66047918/bezier-curve-method-drawing-wrong-in-java...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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605 views

1 answer

matrix - C++ Calling a string from a struct stops the program

(Closed.) This question is not reproducible or was caused by typos. It is not currently accepting answers. question ... 66052178/c-calling-a-string-from-a-struct-stops-the-program...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

549 views

1 answer

matrix - C++ Calling a string from a struct stops the program

(Closed.) This question is not reproducible or was caused by typos. It is not currently accepting answers. question ... 66052178/c-calling-a-string-from-a-struct-stops-the-program...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

585 views

1 answer

matrix - Using getChannels() function in R pixmap package: I want black to be '1' and white to be '0', it is the inverse of this by default

I've imported a black and white pnm file with read.pnm(x). I have then used getChannels(x) to create matrix y. In ... -function-in-r-pixmap-package-i-want-black-to-be-1-and-whi...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

585 views

1 answer

matrix - Using getChannels() function in R pixmap package: I want black to be '1' and white to be '0', it is the inverse of this by default

I've imported a black and white pnm file with read.pnm(x). I have then used getChannels(x) to create matrix y. In ... -function-in-r-pixmap-package-i-want-black-to-be-1-and-whi...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

657 views

1 answer

matrix using pointers c++ without dynamic allocation

So i have an assigment that would read a matrix using pointers and show it using pointers also i wanna ... com/questions/65541016/matrix-using-pointers-c-without-dynamic-allocation...

asked Apr 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

582 views

1 answer

matrix using pointers c++ without dynamic allocation

So i have an assigment that would read a matrix using pointers and show it using pointers also i wanna ... com/questions/65541016/matrix-using-pointers-c-without-dynamic-allocation...

asked Apr 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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