Invalid links in the notebooks (transferred from source)

[aadsouza]

@WenxinM:
"This issue is transferred from the myst repo

There are two invalid links in the current notebooks, possibly due to the nested structure of the exercise.

• One is in Lecture Randomness
  (https://datascience.quantecon.org/scientific/randomness.html or https://5ff76619566d1a00a3e5f162--nervous-villani-f8256d.netlify.app/scientific/randomness.html)
  There should be a link to the lecture Applied Linear Algebra in exercise 3 but it does not show up. The corresponding code is line 484 in the md file (I couldn't find a way to refer to the codes in the md files):

**Exercise 3**

Let's revisit the unemployment example from the {doc}`linear algebra lecture <applied_linalg>`.

We'll repeat necessary details here.

• The other is in Lecture Introduction to Numpy
  There should be a link to the lecture Control Flow in exercise 5. It does not show up here https://datascience.quantecon.org/scientific/numpy_arrays.html but works as expected here https://5ff76619566d1a00a3e5f162--nervous-villani-f8256d.netlify.app/scientific/numpy_arrays.html. The corresponding code is line 417 in the md file:

**Exercise 5**

Let's revisit a bond pricing example we saw in {doc}`Control flow <../python_fundamentals/control_flow>`.

@arnavs"

@aadsouza:
"one more: https://datascience.quantecon.org/pandas/merge.html links to https://www.transtats.bts.gov/ErrPage.asp
edit: https://quantecon.github.io/lecture-datascience.myst/pandas/groupby.html also links to BTS

https://www.census.gov/geo/maps-data/data/cbf/cbf_state.html invalid as well

https://scikit-learn.org/stable/auto_examples/svm/plot_iris.html in classification lecture"

[wupeifan]

Are these all still remaining issues or actually most of them are solved? I might know how to fix some of them if you guys don't have a solution yet.

[aadsouza]

seeing as they were in the source repo and we most likely forgot about them until now, I believe that these are open issues.

[wupeifan]

@aadsouza The first two links are just cross-lecture links and I'll just leave them for you guys to fix. The links you mentioned are all fixed in #91

[aadsouza]

adding this to the list of external links that need to be fixed QuantEcon/lecture-datascience.notebooks#1 (comment)

[aadsouza]

also, internal links appear to be invalid throughout the notebook, not just those exercises.

[mmcky]

@aadsouza can you open an issue on https://github.com/QuantEcon/sphinx-tojupyter and link to this one. This relates to the download notebooks?

[aadsouza]

The problem with the internal links generated in the nbs is that they forget to include the subdirectories in the path. For example if it needs to link to the reg lecture, it goes ds.qe.org/reg, instead of ds.qe.org/apps/reg. My initial idea was to change the path in the lecture itself from reg to ../apps/reg and various permutations which did not work, but then noticed that in the conf yaml we have tojupyter_urlpath: "https://datascience.quantecon.org/" but it is likely we need something like tojupyter_urlpath: "https://datascience.quantecon.org/subrepo" where subrepo \in \{apps, sci, fundamentals, intro, pd, etc...\} .

[WenxinM]

Note to self: @WenxinM check the internal link in Colletions, python fundementals, search for Note that in order to sort.
More in functions