fix(tier4_debug_tools): fix unnecessary use of map

[takayuki5168]

Signed-off-by: Takayuki Murooka takayuki5168@gmail.com

Description

Fix for CI error of latest PRs.
#1037
#1036

I confirmed this PR worked well with the simple case where there is only one stop line.

FYI, it seems that the current implementation without this PR does not work well with python3 according to this article.
https://stackoverflow.com/questions/1303347/getting-a-map-to-return-a-list-in-python-3-x

takayukimurooka@npc2109028:/tmp$ cat test.py 
import numpy as np

a_list = [1, 2, 3]

print('[map]')
print('min : {}'.format(np.argmin(map(lambda a: a * a, a_list))))
print('max : {}'.format(np.argmax(map(lambda a: a * a, a_list))))

print('[list]')
print('min : {}'.format(np.argmin([a * a for a in a_list])))
print('max : {}'.format(np.argmax([a * a for a in a_list])))
takayukimurooka@npc2109028:/tmp$ python3 test.py 
[map]
min : 0
max : 0
[list]
min : 0
max : 2

Pre-review checklist for the PR author

The PR author must check the checkboxes below when creating the PR.

• I've confirmed the contribution guidelines.
• The PR follows the pull request guidelines.

In-review checklist for the PR reviewers

The PR reviewers must check the checkboxes below before approval.

• The PR follows the pull request guidelines.

Post-review checklist for the PR author

The PR author must check the checkboxes below before merging.

• There are no open discussions or they are tracked via tickets.

After all checkboxes are checked, anyone who has write access can merge the PR.

[codecov]

Codecov Report

Merging #1040 (a2f8b1b) into main (ac96ce5) will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##            main   #1040   +/-   ##
=====================================
  Coverage   9.33%   9.33%           
=====================================
  Files        988     988           
  Lines      66676   66676           
  Branches   11591   11591           
=====================================
  Hits        6221    6221           
  Misses     55280   55280           
  Partials    5175    5175           

Flag	Coverage Δ		*Carryforward flag
differential	0.00% <ø> (?)
total	9.31% <ø> (ø)		Carriedforward from ac96ce5

*This pull request uses carry forward flags. Click here to find out more.

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update ac96ce5...a2f8b1b. Read the comment docs.

[takayuki5168]

@kenji-miyake @wep21 Could you check this PR.

[kenji-miyake]

Thank you!