Update with 30m dem code for #30

[Robinlovelace]

No description provided.

[Robinlovelace]

Update here: got the elevation for Brussels region.

Code: see commit above.

[Robinlovelace]

Cycle net for 6km study area:

[Robinlovelace]

You can reproduce this with

gh pr checkout 68
# Open and run the code in vignettes/verification.Rmd

[Robinlovelace]

Info on the DEM dataset: https://ec.europa.eu/eurostat/documents/7116161/7172326/Report-EU-DEM-statistical-validation-August2014.pdf

[Robinlovelace]

You can skip the DEM download step by downloading this and putting it in a new dems folder for testing: https://github.com/ropensci/slopes/releases/download/v1.0.1/Copernicus_DSM_COG_10_N50_00_E004_00_DEM.tif

[Robinlovelace]

Results for Leeds: looking pretty good.

[Robinlovelace]

Preliminary results for Brussels: https://github.com/ropensci/slopes/releases/download/v1.0.1/cycle_net_slopes_brussels.html

I sense that this substantially overestimates the slopes. Next step: explore and apply smoothing function. Any feedback before then welcome.

Here's what it should look like:

Raw data:

https://github.com/ropensci/slopes/releases/download/v1.0.1/cycle_net_slopes_brussels.gpkg

[temospena]

I as able to reproduce it

[temospena]

Maybe we can revisit this validation / benchmark working paper :)
https://github.com/U-Shift/Declives-RedeViaria/blob/main/Benchmark.md

[Robinlovelace]

Great idea Rosa, I'm well up for that.