update readme

README.md

@@ -52,4 +52,17 @@ sudo pip3 install pygeos --no-binary pygeos
 - [X] Map plotting
     - [X] Fix nonsense map plot :warning:
 - [X] Export data results.
-- [ ] Code cleaning ?
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+- [ ] Code cleaning ?
+
+### After meeting
+
+- 2nd culture majority
+- For one group (cereal, livestock, other) get a heatmap based on [regression](https://scikit-learn.org/stable/auto_examples/linear_model/plot_ols.html) of group by PRA :
+    ```
+    y=a+b*t
+    where t=year
+    y=sum of cereal surfaces (herbs, other)
+    prediction y^ in 2015 and in 2019
+    computation of (y^2019-y^2015) / y^2015
+    ```
+- fix 2019 in [RPG graph cult](https://gitlab.irstea.fr/loris.croce/rpg_graph_cult)
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