matlab funcs in tutorial

tutorial/tutorial.md

@@ -778,7 +778,7 @@ functionality as common Matlab functions.
 | `igl::cross`             | Cross product per-row |
 | `igl::dot`               | dot product per-row |
 | `igl::find`              | Find subscripts of non-zero entries |
-| `igl::floot`             | Round entries down to nearest integer |
+| `igl::floor`             | Round entries down to nearest integer |
 | `igl::histc`             | Counting occurrences for building a histogram |
 | `igl::hsv_to_rgb`        | Convert HSV colors to RGB (cf. Matlab's `hsv2rgb`) |
 | `igl::intersect`         | Set intersection of matrix elements. |
@@ -786,9 +786,17 @@ functionality as common Matlab functions.
 | `igl::kronecker_product` | Compare to Matlab's `kronprod` |
 | `igl::median`            | Compute the median per column |
 | `igl::mode`              | Compute the mode per column |
+| `igl::null`              | Compute the null space basis of a matrix |
+| `igl::nchoosek`          | Compute all k-size combinations of n-long vector |
 | `igl::orth`              | Orthogonalization of a basis |
+| `igl::parula`            | Generate a quantized colormap from blue to yellow |
+| `igl::randperm`          | Generate a random permutation of [0,...,n-1] |
+| `igl::rgb_to_hsv`        | Convert RGB colors to HSV (cf. Matlab's `rgb2hsv`) |
 | `igl::setdiff`           | Set difference of matrix elements |
+| `igl::sort`              | Sort elements or rows of matrix |
 | `igl::speye`             | Identity as sparse matrix |
+| `igl::sum`               | Sum along columns or rows (of sparse matrix) |
+| `igl::unique`            | Extract unique elements or rows of matrix |
 
 ## Laplace equation
 A common linear system in geometry processing is the Laplace equation: