Improves plots

[xadupre]

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 84.16667% with 19 lines in your changes missing coverage. Please review.

Project coverage is 84.71%. Comparing base (87d7664) to head (b3565f8). Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
onnx_extended/tools/graph/onnx_graph_struct.py	75.00%	6 Missing :warning:
onnx_extended/ext_test_case.py	42.85%	4 Missing :warning:
onnx_extended/tools/onnx_inline.py	75.00%	2 Missing :warning:
onnx_extended/tools/stats_nodes.py	66.66%	2 Missing :warning:
onnx_extended/_command_lines.py	50.00%	1 Missing :warning:
onnx_extended/reference/other_ops/op_tokenizer.py	0.00%	1 Missing :warning:
...nnx_extended/tools/graph/onnx_graph_transformer.py	50.00%	1 Missing :warning:
onnx_extended/tools/onnx_nodes.py	83.33%	1 Missing :warning:
onnx_extended/tools/run_onnx.py	50.00%	1 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #188      +/-   ##
==========================================
- Coverage   84.75%   84.71%   -0.04%     
==========================================
  Files          58       58              
  Lines        7050     7060      +10     
==========================================
+ Hits         5975     5981       +6     
- Misses       1075     1079       +4     

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