Applied same fix as 1695458be to remaining 5 polynomial types

- Fixes documentation of polynomial types `*vander2d()` methods to give the
  correct last index of the pseudo-Vandermonde matrix returned expressed in
  terms of x and y.

5 files changed, 5 insertions, 5 deletions

diff --git a/numpy/polynomial/chebyshev.py b/numpy/polynomial/chebyshev.py
index 44fb32b5f..3babb8fc2 100644
--- a/numpy/polynomial/chebyshev.py
+++ b/numpy/polynomial/chebyshev.py
@@ -1472,7 +1472,7 @@ def chebvander2d(x, y, deg):
     Returns the pseudo-Vandermonde matrix of degrees `deg` and sample
     points `(x, y)`. The pseudo-Vandermonde matrix is defined by
 
-    .. math:: V[..., deg[1]*i + j] = T_i(x) * T_j(y),
+    .. math:: V[..., (deg[1] + 1)*i + j] = T_i(x) * T_j(y),
 
     where `0 <= i <= deg[0]` and `0 <= j <= deg[1]`. The leading indices of
     `V` index the points `(x, y)` and the last index encodes the degrees of
diff --git a/numpy/polynomial/hermite.py b/numpy/polynomial/hermite.py
index 00ca8702d..0ebae2027 100644
--- a/numpy/polynomial/hermite.py
+++ b/numpy/polynomial/hermite.py
@@ -1243,7 +1243,7 @@ def hermvander2d(x, y, deg):
     Returns the pseudo-Vandermonde matrix of degrees `deg` and sample
     points `(x, y)`. The pseudo-Vandermonde matrix is defined by
 
-    .. math:: V[..., deg[1]*i + j] = H_i(x) * H_j(y),
+    .. math:: V[..., (deg[1] + 1)*i + j] = H_i(x) * H_j(y),
 
     where `0 <= i <= deg[0]` and `0 <= j <= deg[1]`. The leading indices of
     `V` index the points `(x, y)` and the last index encodes the degrees of
diff --git a/numpy/polynomial/hermite_e.py b/numpy/polynomial/hermite_e.py
index 49888ee09..a09b66670 100644
--- a/numpy/polynomial/hermite_e.py
+++ b/numpy/polynomial/hermite_e.py
@@ -1240,7 +1240,7 @@ def hermevander2d(x, y, deg):
     Returns the pseudo-Vandermonde matrix of degrees `deg` and sample
     points `(x, y)`. The pseudo-Vandermonde matrix is defined by
 
-    .. math:: V[..., deg[1]*i + j] = He_i(x) * He_j(y),
+    .. math:: V[..., (deg[1] + 1)*i + j] = He_i(x) * He_j(y),
 
     where `0 <= i <= deg[0]` and `0 <= j <= deg[1]`. The leading indices of
     `V` index the points `(x, y)` and the last index encodes the degrees of
diff --git a/numpy/polynomial/laguerre.py b/numpy/polynomial/laguerre.py
index 49b0a9247..dfa997254 100644
--- a/numpy/polynomial/laguerre.py
+++ b/numpy/polynomial/laguerre.py
@@ -1242,7 +1242,7 @@ def lagvander2d(x, y, deg):
     Returns the pseudo-Vandermonde matrix of degrees `deg` and sample
     points `(x, y)`. The pseudo-Vandermonde matrix is defined by
 
-    .. math:: V[..., deg[1]*i + j] = L_i(x) * L_j(y),
+    .. math:: V[..., (deg[1] + 1)*i + j] = L_i(x) * L_j(y),
 
     where `0 <= i <= deg[0]` and `0 <= j <= deg[1]`. The leading indices of
     `V` index the points `(x, y)` and the last index encodes the degrees of
diff --git a/numpy/polynomial/legendre.py b/numpy/polynomial/legendre.py
index b54fd2982..fdaa56e0c 100644
--- a/numpy/polynomial/legendre.py
+++ b/numpy/polynomial/legendre.py
@@ -1273,7 +1273,7 @@ def legvander2d(x, y, deg):
     Returns the pseudo-Vandermonde matrix of degrees `deg` and sample
     points `(x, y)`. The pseudo-Vandermonde matrix is defined by
 
-    .. math:: V[..., deg[1]*i + j] = L_i(x) * L_j(y),
+    .. math:: V[..., (deg[1] + 1)*i + j] = L_i(x) * L_j(y),
 
     where `0 <= i <= deg[0]` and `0 <= j <= deg[1]`. The leading indices of
     `V` index the points `(x, y)` and the last index encodes the degrees of