Add a plot for sake of demonstration.

Author: rossbar

site/numpy_issues.md

@@ -20,7 +20,10 @@ tags: [remove-cell]
 
 import json
 import functools
+import datetime
+
 import numpy as np
+import matplotlib.pyplot as plt
 from myst_nb import glue
 
 glue = functools.partial(glue, display=False)
@@ -57,11 +60,45 @@ tags: [hide-input]
 newly_created = [
     iss for iss in issues if np.datetime64(iss["createdAt"]) > query_date
 ]
-num_closed = sum(iss["state"] == "CLOSED" for iss in newly_created)
+new_issues_closed = [iss for iss in newly_created if iss["state"] == "CLOSED"]
+
+new_issue_lifetime = np.array(
+    [
+        np.datetime64(iss["closedAt"]) - np.datetime64(iss["createdAt"])
+        for iss in new_issues_closed
+    ],
+).astype("m8[h]")  # in hours
 
 glue("num_new_issues", len(newly_created))
-glue("num_new_issues_closed", f"{num_closed} ({100 * num_closed / len(newly_created)}%)")
+glue(
+    "num_new_issues_closed",
+    f"{len(new_issues_closed)} ({100 * len(new_issues_closed) / len(newly_created)}%)"
+)
+glue("new_issue_avg_lifetime", f"{np.mean(new_issue_lifetime)}")
 ```
 
-{glue:text}`num_new_issues` have been opened since {glue:text}`query_date`, of
-which {glue:text}`num_new_issues_closed` have been closed.
+{glue:text}`num_new_issues` new issues have been opened since
+{glue:text}`query_date`, of which {glue:text}`num_new_issues_closed` have been
+closed.
+
+The average lifetime of new issues that were created and closed in this period
+is {glue:text}`new_issue_avg_lifetime`.
+
+% TODO: replace with bokeh or some other live-plot
+% TODO: for any remaining static/mpl plots, set default params for things
+% like fontsize in a mplstyle file.
+
+```{code-cell} ipython3
+---
+tags: [hide-input]
+---
+fig, ax = plt.subplots(figsize=(16, 12))
+ax.hist(new_issue_lifetime.astype("m8[D]").astype(int), bins=np.arange(30))
+ax.set_title(
+    f"Lifetime of issues created and closed in the last "
+    f"{(np.datetime64(datetime.datetime.now()) - query_date).astype('m8[D]')}",
+    fontsize=24
+)
+ax.set_xlabel("Issue lifetime (days)", fontsize=20)
+ax.set_ylabel(r"$\frac{issues}{day}$", fontsize=20);
+```