new and update

common/docs/knowledgeBase/c++17.txt

@@ -23,5 +23,11 @@ g++ --version
 # If you are already are root (e.g. inside a docker image), remove the "sudo" below.
 ls -la /usr/bin/ | grep -oP "[\S]*(gcc|g\+\+)(-[a-z]+)*[\s]" | xargs sudo bash -c 'for link in ${@:1}; do ln -s -f "/u
 
+[package dependenciy management]
+https://github.com/Microsoft/vcpkg
+
+[personal repository ]
+https://help.ubuntu.com/community/Repositories/Personal
+https://medium.com/sqooba/create-your-own-custom-and-authenticated-apt-repository-1e4a4cf0b864
 
 

common/docs/knowledgeBase/creating-city-geojson-polygon.txt

+1 Getting the OSM relation ID
+- go to: https://nominatim.openstreetmap.org/
+- enter th city, search and look for 'city' in the results, click on it
+- search and copy the OSM id, e.g for fremont it is '111943'
+
+2 Get the GeoJSON from the ID
+- go to http://polygons.openstreetmap.fr/index.py
+- enter the OSM id and click
+- from the table. choose the first row (you can choose the 'image' and see if it is correct) and click 
+  on 'GeoJSON' option and the received json.
+
+Note: some implementation will require the Full GeoJSON, and some will require the 'geometries' part
+

products/MCX/design/Edge/design-notes.txt

+
+[Messaging]
+https://www.emqx.io/products/edge
+
+[Database]
+- SQLite with Spatialite
+https://www.sqlite.org/index.html
+https://www.bostongis.com/PrinterFriendly.aspx?content_name=spatialite_tut01