Hi there,
I was wondering if anyone could help me with my problem. I have a shapefile with polylines which have associated attributes including the Strahler order. I was wondering if anyone knew how to select only networks which had a minimum order of 3.
I have tried using the select by attributes function where "Stream_Ord" >= 3 however this does not seem to work as it only selects segments of fluvial networks not the whole network.
Many thanks in advance,
Alex
Solved! Go to Solution.
Step-1: Select by Attribute
where grid_code >= 3
Step-2: Select By Location
Input Features: Str_order layer
Relationship: Intersect
Selecting Features: Str_order layer
Selection Type: Add to current selection
Click Apply multiple times (till the number of selected features in your attribute table doesn't increase any more).
image is small to see details, but strahler applies to segments... what does <= 3 yield?
How Stream Order works—ArcGIS Pro | Documentation
The image suggests you might be looking for the left image but where the network exits. You would have to query those segments directly then query for those above
i was assuming it would select the rest of the network as the polylines, evidently that is not the case
Step-1: Select by Attribute
where grid_code >= 3
Step-2: Select By Location
Input Features: Str_order layer
Relationship: Intersect
Selecting Features: Str_order layer
Selection Type: Add to current selection
Click Apply multiple times (till the number of selected features in your attribute table doesn't increase any more).