I have a huge river network on my hands (see screen capture below), and would like to style its vector lines to get tapered rivers.
Some tutorials out there explain how to taper rivers (see links below), but they only deal with single albeit complex rivers. I have the river network for an entire landmass to deal with, and can't see myself dealing with each river network on its own.
So far, applying the techniques described in the tutorials below has not led to anything but failure: the rivers remain untapered.
My question would therefore be, can tapered rivers be created for multiple large river networks?
Tapered rivers tutorial sample:
Better river styles with tapered lines https://anitagraser.com/2017/04/17/better-river-styles-with-tapered-lines/
Improved tapered rivers in QGIS https://mirrodriguezlombardo.com/rios-afilados-qgis-en.html
Style rivers with tapered lines using QGIS https://youtu.be/BHPrlhsVtvw