Dot indexing is not supported for variables of this type

1

Hi! I am running some matlab script on HPC clusters (Stanford’s Sherlock). I get this error message

Dot indexing is not supported for variables of this type.

Error in cvx_global (line 76)
osolvers = cvx___.solvers.list;

Error in cvxprob (line 4)
cvx_global

Error in cvx_begin (line 41)
assignin( ‘caller’, ‘cvx_problem’, cvxprob( varargin{:} ) );

Error in MC (line 15)
cvx_begin

My script runs perfectly on my own laptop (the script contains a line that runs cvxstartup.m at the top), and on login nodes on the HPC cluster. This problem only appears when I try to run it on compute nodes. Would really appreciate any help on how to troubleshoot this.

Thanks!

2 Likes
2

Hi, I have excatly the same issue. I couldn’t find a solution in any other forum either. Did you solve it?

3

Just ran into this problem and fixed it by re-installing cvx. My setup:

  • MATLAB R2019a
  • Was running CVX v2.1 Build 1123 when I encountered the error; updated to CVX v2.1 Build 1127 (most up-to-date download available as of this post date) and the error went away.

Hope this helps!

4

Hi, I also have the same problem. Have you solved this problem and how did you solve it? Thanks!

5

Has anyone found the solution to the above problem? My MATLAB scripts runs perfectly on my laptop which has the MATALB 2017 version. But when I run it on the host server which has MATLAB 2019 version, I get this error that dot indexing is not supported for variables of this type for the variable cvx___.solvers.list, cvx___.solver.selected.

Kindly help if anyone has solution.

Regards,
Osama

6

I had the same problem with Matlab 2018b and CVX 2.1. It is solved after running ‘cvx_setup’.

1 Like
7

I am using CVX on MATLAB Online, which runs under Linux system. I had the same problem, and thank you for the tips about running cvx_setup, it solved the problem!!!