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* implement the corner() API change: new methods topLeftCorner() etc

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* get rid of BlockReturnType: it was not needed, and code was not always using it consistently anyway
* add topRows(), leftCols(), bottomRows(), rightCols()
* add corners unit-test covering all of that
* adapt docs, expand "porting from eigen 2 to 3"
* adapt Eigen2Support
This commit is contained in:
Benoit Jacob
2010-04-22 14:11:18 -04:00
parent 28dde19e40
commit 9962c59b56
37 changed files with 820 additions and 350 deletions
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6
unsupported/Eigen/src/NonLinearOptimization/lmpar.h
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@@ -188,7 +188,7 @@ void ei_lmpar2(
const int rank = qr.rank(); // use a threshold
wa1 = qtb;
wa1.tail(n-rank).setZero();
qr.matrixQR().corner(TopLeft, rank, rank).template triangularView<Upper>().solveInPlace(wa1.head(rank));
qr.matrixQR().topLeftCorner(rank, rank).template triangularView<Upper>().solveInPlace(wa1.head(rank));
x = qr.colsPermutation()*wa1;
@@ -210,7 +210,7 @@ void ei_lmpar2(
parl = 0.;
if (rank==n) {
wa1 = qr.colsPermutation().inverse() * diag.cwiseProduct(wa2)/dxnorm;
qr.matrixQR().corner(TopLeft, n, n).transpose().template triangularView<Lower>().solveInPlace(wa1);
qr.matrixQR().topLeftCorner(n, n).transpose().template triangularView<Lower>().solveInPlace(wa1);
temp = wa1.blueNorm();
parl = fp / delta / temp / temp;
}
@@ -258,7 +258,7 @@ void ei_lmpar2(
/* compute the newton correction. */
wa1 = qr.colsPermutation().inverse() * diag.cwiseProduct(wa2/dxnorm);
// we could almost use this here, but the diagonal is outside qr, in sdiag[]
// qr.matrixQR().corner(TopLeft, n, n).transpose().template triangularView<Lower>().solveInPlace(wa1);
// qr.matrixQR().topLeftCorner(n, n).transpose().template triangularView<Lower>().solveInPlace(wa1);
for (j = 0; j < n; ++j) {
wa1[j] /= sdiag[j];
temp = wa1[j];