= GIS Structures =

Three candidates are available for EDA

When comparing surface layers for ECRINs and CCM for the bassin Loire-Bretagne : the CCM layer is more extended than the Ecrin Layer

[[Image(source:EDA/data/Docs/trac/Loire Bretagne 1 - CCM Ecrins.jpg)]]

== describing the CCM layers ==

gid:: 
 id corresponds to line number)
wso1_id::
 id
wso_id::
 id watershed
rvr_id::
 id of the river often 0
fromnode::
 upstream node 
tonode::
 downstream node
strahler::
 ?
pfafstette::
 ?
nextdownid::
 next segment identifyer downstream points to wso_id
longpath::
 ? 
maindrain_::
 ?
maindrain1::
 ?
length::
 longueur
cum_len::
 cumulated length from upstream (longest route ?)
pixels_100::
 ?
catchment_::
 ?
cont_pixel::
 uh ?
drain_km2::
 ?
alt_gradie:: 
 ?
burned::
 ?   
confidence::
 ?
window:: 
 here 2003
shape_leng::
 ?
the_geom:: 
 the_geom