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Questions tagged [stream]

The tag has no usage guidance.

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1answer
37 views

Continuous buffer from individual polygons in QGIS

I have a stream segment for which I am trying to find a buffer around with criteria as 5m of elevation. So for each straight line within a stream segment, I have found buffer (polygon) for it. Now I ...
0
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1answer
24 views

Estimate total stream length, frequency and order in ArcMap [closed]

I am new to GIS, and I want to calculate the stream frequency and Strahler stream order in a watershed. I have already processed the DEM and there are 20 sub basins. A sample map what I want to get is ...
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0answers
17 views

Howerive vector stream network from a DEM using D-Infinity Flow Direction algorithm?

I have been working with a 1m LiDAR derived DEM to create a vector stream network. Using the D8 flow direction, D8 flow accumulation, and a specified threshold, I was able to create a vector stream ...
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0answers
26 views

Quantitatively evaluating quality of watershed delineation stream line results?

How can we quantitatively describe the quality of watershed delineation? What metrics can I use to compare the stream line differences between a few delineations using different DEMs with different ...
0
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1answer
49 views

Find higher elevation (10m) perpendicular point from stream network at regular interval

I have a stream network and for that network, I want to find the points at regular intervals which lie at 10m distance perpendicular from the stream.The final goal is to find the buffer of that 10m ...
1
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1answer
39 views

Reading RINEX formatted streams

I'm playing around with a public NTRIP caster but I'm very new to all this. I'm using BKG Ntrip Client to read the stream and the file I get has around 45 lines for each sample. Each line begins with ...
3
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1answer
120 views

QGIS: Edit elevation in DTM to get correct slope of a river

I am new to QGIS and just need it to do a hydrolocic analysis of an area of which I later make a flow model with HEC-RAS 2D. I made it according to this tutorial: https://www.youtube.com/watch?v=Ro-...
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0answers
35 views

Determining if Runoff Sinks drain to stream or drain to road?

I've tried using the linked method to determine area that drains to stream vs drains to road. For some reason when I run the watershed tool on the the raster representing stream and road features, I ...
2
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1answer
72 views

WMTS Grid Streaming using QGIS?

I've got a WMTS service that work well, but I would like to display a grid in qgis over it with X, Y, Z information how may I do that ? If QGis can't generate it for us, how may I generate this kind ...
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0answers
166 views

Can I stream GeoJSON data in openlayers, using Angular6+

I am using angular 6 and openlayers 5. Angular 6 combined with RxJS can easily create streams. I was thinking to use RxJS streams in order to feed GeoJSON data to ol5 vector layers. Why? Because ...