# Documentation of Clp.jl

**URL:** <https://discourse.julialang.org/t/documentation-of-clp-jl/48005>\
**Category:** Optimization (Mathematical)\
**Tags:** documentation, jump\
**Created:** [October 8, 2020, 9:13pm UTC](https://discourse.julialang.org/t/documentation-of-clp-jl/48005 "2020-10-08T21:13:25Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![JohnZ](https://avatars.discourse-cdn.com/v4/letter/j/ba8739/32.png) [@JohnZ](https://discourse.julialang.org/u/JohnZ)\
**Post date:** [October 8, 2020, 9:13pm UTC](https://discourse.julialang.org/t/documentation-of-clp-jl/48005/1 "2020-10-08T21:13:25Z")

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The documentation of the Julia wapper to the Clp solver is a bit out of date. Under options, “SolveType” is still listed but it looks like it has been replaced by “Algorithm”: [https://github.com/jump-dev/Clp.jl](https://github.com/jump-dev/Clp.jl)

Options for scaling are not documented in the Julia wrapper. I managed to find some documentation on the options for scaling here: [Clp: ClpModel Class Reference](https://www.coin-or.org/Doxygen/Clp/classClpModel.html)

_Sets or unsets scaling, 0 -off, 1 equilibrium, 2 geometric, 3 auto, 4 auto-but-as-initialSolve-in-bab_

The code below works for me:

```julia
model = Model(Clp.Optimizer)
set_optimizer_attribute(model,"Scaling",1)

```

It may be worth updating the documentation.

---

<div class="post-metadata">

**Author:** ![odow](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/odow/32/28685_2.png) [@odow](https://discourse.julialang.org/u/odow)\
**Post date:** [October 8, 2020, 11:06pm UTC](https://discourse.julialang.org/t/documentation-of-clp-jl/48005/2 "2020-10-08T23:06:28Z")

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You can make a PR to improve the documentation by clicking the pencil in the top-right corner of the README:

 ![image](https://global.discourse-cdn.com/julialang/original/3X/9/1/9108df5684b1f688904e7e89f6ed1278c3b50f52.png)