- #Setting an array element with a sequence cvxpy how to#
- #Setting an array element with a sequence cvxpy code#
O dimensional : () 1 dimensional : ( 1 ,) Transpose ¶ Indexing drops dimensions while slicing preserves dimensions. While expr selects both rows and columns. If expr is a matrix, then expr selects rows, More generally, expr selects every kthĮlement of expr, starting at i and ending at j-1. Indexing in CVXPY follows exactly the same semantics as NumPy ndarrays.įor example, if expr has shape (5,) then expr gives the second entry. * should be matrix-scalar and vector-scalar multiplicationĮlementwise multiplication can be applied with the multiply function. Starting with Python 3.5, users can writeĮxpr1 expr2 for matrix multiplication and dot products.Īs of CVXPY version 1.1, we are adopting a new should be used for matrix-matrix and matrix-vector multiplication,
#Setting an array element with a sequence cvxpy how to#
The Disciplined geometric programming section shows how to solve log-log convex programs. The Basic examples section shows how to solve some common optimization problems in CVXPY. Historically, CVXPY used expr1 * expr2 to denote matrix multiplication. These examples show many different ways to use CVXPY. The expression expr1*expr2 is affine inĬVXPY when one of the expressions is constant, and expr1/expr2 is affine The infix operators +, -, *, /, are treated as functions. Your model is expecting an array while you are sending a sequence/list. The DCP rules to mark expressions with a sign and curvature. CVXPY uses the function information in this section and
If you have any queries then you can contact us for more help.This section of the tutorial describes the atomic functions that can be applied The above is the solutions for both cases. Valueerror: Setting an Array Element with a Sequence error generally comes when you are creating a NumPy array using a different multi-dimensional array and different types of elements of the array. The other solution for this error is that you should define the type of the NumPy array of the object type. You should make sure that you should use elements of the same type. The solution for this case is also very simple. Print(numpy_array) Valueerror when creating an array with different types of elements For example, mixing string with int or float with int e.t.c. The other cause for getting Valueerror is you are using different datatype elements for the NumPy array. Just use the array of the same dimensions in a sequence. The solution for this error is very simple. Value error when creating a multi-dimensional array
#Setting an array element with a sequence cvxpy code#
When you will run the code you will get the value error. One is a 2D array and the other is a 3D array. For example, if you will create a NumPy array of multi-dimension. The first case when you will get Valueerror: Setting an Array Element with a Sequence is creating an array with different dimensions or shapes. import cvxpy as cp import numpy as np Problem data. I tried to solve a convex problem with cvxpy as below.
Cause 1: Mixing with different Array dimensions ValueError: setting an array element with a sequence in CVXPY minimize function. 1257 Closed brunoeducsantos opened this issue on 3 comments brunoeducsantos commented on edited OS: Ubuntu 20.04 CVXPY Version: 1.1. Issue 1257 cvxpy/cvxpy GitHub ValueError: setting an array element with a sequence. You will know how to solve this error in a simple way. ValueError: setting an array element with a sequence. In addition, you are mixing with different dimensions. In python Valueerror: Setting an Array Element with a Sequence means you are creating a NumPy array of different types of elements in it. The other case when you will get this error is when you are creating a multiple-dimensional NumPy array. For example, mixing int with float or int or float with string. In python Valueerror: Setting an Array Element with a Sequence means you are creating a NumPy array of different types of elements in it. What does setting an array element with a sequence mean in Python? In this tutorial, you will know all the causes that lead to this error and how to solve this error.
And when you are creating multi-dimensional NumPy array then you will mostly get the Valueerror: Setting an Array Element with a Sequence error. In python, you must be familiar with the NumPy package.
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