Addtional Row and Column methods available in other packages such as octave, R,..

[Gregor959]

SORTING AND SHUFFLING:
SortByColumn -- similar to excel sort
SortByRow
ShuffleRows --puts rowvectors in a matrix in a random order
ShuffleColumns --puts columnvectos in a matrix in a random order.

FINDING AND SETTING SPECIFIC ELEMENTS:
FindMask(Predicate matchCondition) find a mask matrix of 0's and 1's where matchCondition is true.
OnMaskSet(Matrix mask, T value)
OnMaskApply(Matrix mask, Func<T, T> func) can apply a functin to all elements of a Mask Matrix.

e.g. in other languages:
A= Find(myMatrix<0)
myMatrix(A)=0;

//find elemets less than 0
var lessthanZero= myMatrix.FindMask(elem => (elem < 0.0))
// set them all to 0
myMatrix.OnMaskSet(lessthanZero, 0.0)

// a similar method:
FindIndices(Predicate matchCondition)

REMOVING AND SETTING SPECIFIC ROW AND COLUM RANGES:
RemoveColumn
RemoveRow
RemoveRowandColumn

SelectColumns ..selects all rows from a specified range of columns e.g. Matrix(:,10:12) would be selectColumns(10,3)
SelectRows ..selects all rows from a specified range of Rows e.g. Matrix(10:12,:) would be selectRows(10,3)
SetColumns
SetRows

[Gregor959]

Have written these methods and will have these methods available in a branch in less than 2 weeks.

[Gregor959]

This is now available on my latest branch RowAndColAddOns:
1ed85a2

Gregor959@1ed85a2