Connect lines from 2 different watersheds
amagro
Global Mapper User
Hello
I hold like to know if it is possible to connect to lines from a drainage network from two different watershed.
thanks
I hold like to know if it is possible to connect to lines from a drainage network from two different watershed.
thanks
Comments
-
Hello amagro,
I'm not sure if I understand your question, but the watershed analysis does create a connected series of streams in a drainage network as the streams flow downhill from all the the watersheds that are produced. If that's not what you are asking, could you give a little more detail on what exactly you are trying to do?
Regards,Sam Knight
Director of Product Management
Blue Marble Geographics -
Hello samknight,
I was creating very small watersheds and now I would like to join some water lines in order to make one single line, whose purpose is to visualize the path profile of that single line.
In the same way we can join a watershed areas, I was wondering if it’s possible to join 2 contiguous water lines.
Thanks,
AMagro -
Hi Amagro,
To extend your drainage lines, select the two lines that you want to join with the Digitizer tool, then open the Watershed Generations Options dialog. Check the box next to Trace Flow from Selected Lines and uncheck the boxes next to Create Watershed Areas Showing Drainage to Selected Point(s) and Create Watershed Areas Showing Drainage to Streams. Click the OK button to see the results. If the drainage pattern of the two lines flow to the same point, they will meet up.
I have attached a screen shot of the options that I chose for the Watershed Generation Options. Let me know if you have questions.
Hope that helps!
Josie -
Hello Josie_BMG,
Thanks for the help, but I'm not getting what I wanted.
The lines to join:
Captura de ecrã 2014-07-29, às 23.45.51.png
Watershed options:
Captura de ecrã 2014-07-29, às 23.46.48.png
The result:
Captura de ecrã 2014-07-29, às 23.54.44.png
The lines that I select they not joined.
Tks,
AMagro -
Hi AMagro,
I think we understand now, to join the lines, all you need to do is select the lines as you have with the digitizer, then Right-Click, and select Crop/Combine/Split Functions>COMBINE to join them together into one. You will see an intermediate prompt indicating the distance threshold for joining lines, the default value of 0.1m should work just fine for watershed lines that actually share the end vertices.
Regards,
Sam Knight
Director of Product Management
Blue Marble Geographics -
samknight said:Hi AMagro,
I think we understand now, to join the lines, all you need to do is select the lines as you have with the digitizer, then Right-Click, and select Crop/Combine/Split Functions>COMBINE to join them together into one. You will see an intermediate prompt indicating the distance threshold for joining lines, the default value of 0.1m should work just fine for watershed lines that actually share the end vertices.
Regards,
Sam Knight
Director of Product Management
Blue Marble Geographics
Regards, VARVAR
Categories
- 12.7K All Categories
- 5.6K Features Discussion
- 342 Downloading Imagery
- 1.3K Elevation Data
- 380 Georeferencing Imagery Discussion
- 628 GM Script Language
- 53 User Scripts
- 113 GPS Features
- 414 Projection Questions
- 819 Raster Data
- 1.3K Vector Data
- 6.6K Support
- 177 Announcement and News
- 908 Bug Report
- 558 SDK
- 1.2K Suggestion Box
- 3.7K Technical Support
- 562 Other Discussion
- 129 GIS Data Sources
- 27 Global Mapper Showcase
- 233 How I use Global Mapper
- 107 Global Mapper Forum Website