Doc add tutorial figure3

[EmmaRenauld]

Preparing figure 3

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.46%. Comparing base (7be3235) to head (cbe2d1c).
⚠️ Report is 8 commits behind head on master.

❌ Your project status has failed because the head coverage (72.46%) is below the target coverage (75.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1260      +/-   ##
==========================================
+ Coverage   72.45%   72.46%   +0.01%     
==========================================
  Files         293      293              
  Lines       25194    25194              
  Branches     3527     3527              
==========================================
+ Hits        18254    18258       +4     
+ Misses       5448     5445       -3     
+ Partials     1492     1491       -1     

Flag	Coverage Δ
smoketests	69.64% <ø> (+0.01%)	⬆️
unittests	13.11% <ø> (+<0.01%)	⬆️

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Components	Coverage Δ
Scripts	75.30% <ø> (+0.02%)	⬆️
Library	69.10% <ø> (+<0.01%)	⬆️

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