Hi All,
I have a huge matrix file consisting some some millions rows and 6000 columns. The contents are just floating point numbers in the matrix. I want to extract each column (i.e. 6000 of them) and store each column in a separate file.
For example, 1.dat will consist of elements from column... (4 Replies)
I have a tab delimited text file where the first column can take on three different values : 100, 150, 250. I want to extract all the rows where the first column is 100 and put them into a separate text file and so on. This is what my text file looks like now:
100 rs3794811 0.01 0.3434... (1 Reply)
Hi All,
I have a huge (and its really huge!) matrix about 400GB in size (2 million rows by 1.5 million columns) . I am trying to optimize its space by creating a sparse representation of it.
Miniature version of the matrix looks like this (matrix.mtx):
3.4543 65.7876 54.564
2.12344... (4 Replies)
hi
i have an input file that contains some thing like this
aaa acc aa abc1 1232 aaa abc2....
poo awq aa abc1 aaa aaa abc2
bbb bcc bb abc1 3214 bbb abc3....
bab bbc bz abc1 3214 bbb abc3....
vvv ssa as abc1 o09 aaa abc4....
azx aaq aa abc1 900 aqq abc19....
aaa aa aaaa abc1 899 aa... (8 Replies)
Hi,
I have a tab delimited text file with multiple columns. The second and third columns include numbers that have not been sorted. I want to extract rows where the second column includes a value between -0.01 and 0.01 (including both numbers) and the first third column includes a value between... (1 Reply)
Hi all,
I have a large matrix of 720 x 25. I want to get sum of range of rows and columns. Like, I need sum of all columns and row number 2 to 21, then leaving 22nd row, again sum of all columns and row number 23 to 42 again leaving 43rd row and then sum of 44th to 63. Means I want to add all... (4 Replies)
I have a file some thing like this:
GN Name=YWHAB;
RC TISSUE=Keratinocyte;
RC TISSUE=Thymus;
CC -!- FUNCTION: Adapter protein implicated in the regulation of a large
CC spectrum of both general and specialized signaling pathways
GN Name=YWHAE;
RC TISSUE=Liver;
RC ... (13 Replies)
Hi Friends,
Hope all is well.
I have an input file like this
a gene1 10
b gene1 2
c gene2 20
c gene3 10
d gene4 5
e gene5 6
Steps to reach output.
1. Print unique values of column1 as column of the matrix, which will be
a
b
c (5 Replies)
All,
I have a text file(Inputfile.csv) with millions of rows and 100 columns. Check the sample for 2 columns below.
Key,Check
A,1
A,2
A,
A,4
B,0
B,1
B,2
B,3
B,4
....
million rows.
My requirement is to delete all the rows corresponding to all the keys which ever has at least one... (4 Replies)
Discussion started by: ks_reddy
4 Replies
LEARN ABOUT MOJAVE
mpsmatrixdecompositionlu
MPSMatrixDecompositionLU(3) MetalPerformanceShaders.framework MPSMatrixDecompositionLU(3)NAME
MPSMatrixDecompositionLU
SYNOPSIS
#import <MPSMatrixDecomposition.h>
Inherits MPSMatrixUnaryKernel.
Instance Methods
(nonnull instancetype) - initWithDevice:rows:columns:
(void) - encodeToCommandBuffer:sourceMatrix:resultMatrix:pivotIndices:status:
Additional Inherited Members
Detailed Description
This depends on Metal.framework.
A kernel for computing the LU factorization of a matrix using partial pivoting with row interchanges.
A MPSMatrixDecompositionLU object computes an LU factorization:
P * A = L * U
A is a matrix for which the LU factorization is to be computed.
L is a unit lower triangular matrix and U is an upper triangular
matrix. P is a permutation matrix.
Method Documentation
- (void) encodeToCommandBuffer: (nonnull id< MTLCommandBuffer >) commandBuffer(MPSMatrix *__nonnull) sourceMatrix(MPSMatrix *__nonnull)
resultMatrix(MPSMatrix *__nonnull) pivotIndices(__nullable id< MTLBuffer >) status
Encode a MPSMatrixDecompositionLU kernel into a command Buffer.
Parameters:
commandBuffer A valid MTLCommandBuffer to receive the encoded filter
sourceMatrix A valid MPSMatrix containing the source data. Must have enough space to hold a rows x columns matrix.
resultMatrix A valid MPSMatrix to contain the result. Must have enough space to hold a rows x columns matrix.
pivotIndices A valid MPSMatrix to contain the pivot indices. Must have enough space to hold an array of size 1xmin(rows, columns)
values. Element type must be MPSDataTypeUInt32.
status A MTLBuffer which indicates the resulting MPSMatrixDecompositionStatus value.
This function encodes the MPSMatrixDecompositionLU object to a valid command buffer.
Upon completion the array pivotIndices contains, for each index i, the row interchanged with row i.
If during the computation U[k, k], for some k, is determined to be exactly zero MPSMatrixDecompositionStatusSingular will be returned in
the provided status buffer. The data referenced by the MTLBuffer is not valid until the command buffer has completed execution. If the
matrix return status is not desired NULL may be provided.
Upon successful factorization, resultMatrix contains the resulting lower triangular factor (without the unit diagonal elements) in its
strictly lower triangular region and the upper triangular factor in its upper triangular region.
This kernel functions either in-place, if the result matrix completely aliases the source matrix, or out-of-place. If there is any partial
overlap between input and output data the results are undefined.
- (nonnull instancetype) initWithDevice: (nonnull id< MTLDevice >) device(NSUInteger) rows(NSUInteger) columns
Initialize an MPSMatrixDecompositionLU object on a device
Parameters:
device The device on which the kernel will execute.
rows The number of rows in the source matrix.
columns The number of columns in the source matrix.
Returns:
A valid MPSMatrixDecompositionLU object or nil, if failure.
Author
Generated automatically by Doxygen for MetalPerformanceShaders.framework from the source code.
Version MetalPerformanceShaders-100 Thu Feb 8 2018 MPSMatrixDecompositionLU(3)