spcouvert Import matrix from sparse matrix extemal fommat luinc Incomplete LU matrix factorizations slice Volumetric slice plot Preconditioned Conjugate Gradients method sphere Generate sphere Working with Nonzero Entries qmr Quasi-Minimal Residual method stem3 Plot discrete rface dat gr Orthogonaltriangular decomposition vaterfa用 Waterfall plot 推M Number of nonzcro matrix elements Delete column from QR factorizatior grinsert Insert column in QR factorization Amount of storage allocated for nonzero matrix elements Plot Annotation and Grids Rank I update to OR factorzation Allocate space for sparse matrix clabel Add contour labels to a contour plot spfun Apply function to nonzero sparse matrix clements datetick Date formatted tick labels sp0目es Replace nonzero sparse matrix elements with ones Sparse Eigenvalues and Singular Values grid Grid lines for 2-D and 3-D plots Find eigenvalues and eigenvectors 2text Place text ona2-D graph using a mouse Find singular values Graph legend for lincs and natches Visualizing Sparse Matrices svds legend plotyy Plot graphs with Y tick labels on the left and right Visualize sparsity pattem Miscellaneous Titles for 2-D and 3Dplots xlabel X-axis labels for 2-D and 3-D plots Set parameters for sparse matrix routines Reordering Algorithms spparms Y-axis labels for 2-D and 3-D plots colamd Column approximate minimum degree permutation zlabel Z-axis labels for 3-Dplots Plotting and Data Visualization colmmd Basic Plots and Graphs colperm Sparse column permutation based on nonzero coun Surface,Mesh,and Contour Plots dmperm Dulmage-Mendelsohn decomposition bar Vertical bar chart barh contour Contour(level curves)plot randperm Random permutation ymdSymmetric approximate minimum degree permutation hist Plothistograms Contour computation contourf symmmd Sparse symmetric minimum degree ordering histe Filled contour plot Histogram count held Hold current graph Mesh hidden line removal mode Sparse reverse Cuthill-MeKee ordering loglog Plot using log-log scales meshe Combination mesh/contourplot pie Pie plot mesh 3-D mesh with reference plane Norm,Condition Number,and Rank plot Plot vectors or matrices peaks A sample function of two variables condest I-norm matrix condition number estimate polar Polar coordinate plot surf 3-D shaded surface graph 2-norm estimate semilogx Semi-log scale plot surface Create surface low-level objects Semi-log scale plot surfe Combination surfcontourplot semilo Sparse Systems of Linear Equations Create axes intiled positions surf 3-D shaded surface with lighting trimesh Triangular mesh plot bicg BiConjugate Gradients method trisurf Triangular surface plo biegstab BiConjugate Gradients Stabilized method Three-Dimensional Plotting 要 Conjugate Gradients Squared method bar3 Vertical 3-D bar chart Choleky and Choleky-nfinity Horizontal D bar chart Volume Visualization cholinc har3h comet3 3-D comet plot coneplot Plot velocity vectors as cones in3-D vector field cholupdate Rank I update to Cholesky factorization cylinder Generate cylinder contourslce Draw contours in volume slice plane gmres Generalized Minimum Residual method (with restarts) Draw filled 3-Dpolygons in 3-space feruiceuiandanguardociyofavecn LSQR implementation of Conjugate Gradients on the normal equations Plot lines and points in 3-D snace divergence Compute the divergence ofa vector field quiver3 3-D quiver (or velocity)plospconvert Import matrix from sparse matrix external format Working with Nonzero Entries nnz Number of nonzero matrix elements nonzeros Nonzero matrix elements nzmax Amount of storage allocated for nonzero matrix elements spalloc Allocate space for sparse matrix spfun Apply function to nonzero sparse matrix elements spones Replace nonzero sparse matrix elements with ones Visualizing Sparse Matrices spy Visualize sparsity pattern Reordering Algorithms colamd Column approximate minimum degree permutation colmmd Sparse column minimum degree permutation colperm Sparse column permutation based on nonzero count dmperm Dulmage-Mendelsohn decomposition randperm Random permutation symamd Symmetric approximate minimum degree permutation symmmd Sparse symmetric minimum degree ordering symrcm Sparse reverse Cuthill-McKee ordering Norm, Condition Number, and Rank condest 1-norm matrix condition number estimate normest 2-norm estimate Sparse Systems of Linear Equations bicg BiConjugate Gradients method bicgstab BiConjugate Gradients Stabilized method cgs Conjugate Gradients Squared method cholinc Sparse Incomplete Cholesky and Cholesky-Infinity factorizations cholupdate Rank 1 update to Cholesky factorization gmres Generalized Minimum Residual method (with restarts) lsqr LSQR implementation of Conjugate Gradients on the normal equations luinc Incomplete LU matrix factorizations pcg Preconditioned Conjugate Gradients method qmr Quasi-Minimal Residual method qr Orthogonal-triangular decomposition qrdelete Delete column from QR factorization qrinsert Insert column in QR factorization qrupdate Rank 1 update to QR factorization Sparse Eigenvalues and Singular Values eigs Find eigenvalues and eigenvectors svds Find singular values Miscellaneous spparms Set parameters for sparse matrix routines Plotting and Data Visualization Basic Plots and Graphs bar Vertical bar chart barh Horizontal bar chart hist Plot histograms histc Histogram count hold Hold current graph loglog Plot using log-log scales pie Pie plot plot Plot vectors or matrices. polar Polar coordinate plot semilogx Semi-log scale plot semilogy Semi-log scale plot subplot Create axes in tiled positions Three-Dimensional Plotting bar3 Vertical 3-D bar chart bar3h Horizontal 3-D bar chart comet3 3-D comet plot cylinder Generate cylinder fill3 Draw filled 3-D polygons in 3-space plot3 Plot lines and points in 3-D space quiver3 3-D quiver (or velocity) plot slice Volumetric slice plot sphere Generate sphere stem3 Plot discrete surface data waterfall Waterfall plot Plot Annotation and Grids clabel Add contour labels to a contour plot datetick Date formatted tick labels grid Grid lines for 2-D and 3-D plots gtext Place text on a 2-D graph using a mouse legend Graph legend for lines and patches plotyy Plot graphs with Y tick labels on the left and right title Titles for 2-D and 3-D plots xlabel X-axis labels for 2-D and 3-D plots ylabel Y-axis labels for 2-D and 3-D plots zlabel Z-axis labels for 3-D plots Surface, Mesh, and Contour Plots contour Contour (level curves) plot contourc Contour computation contourf Filled contour plot hidden Mesh hidden line removal mode meshc Combination mesh/contourplot mesh 3-D mesh with reference plane peaks A sample function of two variables surf 3-D shaded surface graph surface Create surface low-level objects surfc Combination surf/contourplot surfl 3-D shaded surface with lighting trimesh Triangular mesh plot trisurf Triangular surface plot Volume Visualization coneplot Plot velocity vectors as cones in 3-D vector field contourslice Draw contours in volume slice plane curl Compute the curl and angular velocity of a vector field divergence Compute the divergence of a vector field