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TOPIC: Depth transects

Depth transects 5 years 5 months ago #7108

  • Abramis
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Hi,

We have got Lowrance Elite-5 CHIRP and we use ReefMaster with bottom composition option. I would like to know if it possible to create depth transects with Reefmaster (a hand made depth transect with Excel, very long to create...see attached file).

Thank you.
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Depth transects 5 years 5 months ago #7111

  • Matt
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Hi Abramis,
What are the axes on your graph? Is that the depth profile of a single track, or a transect of a generated depth map?
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Depth transects 5 years 5 months ago #7112

  • Abramis
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Hi Matt,
The vertical axe is "depth" and the horizontal one is width (meters). I made it with a single track ~perpendicular to the river with Excel. Not a clever job !!!
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Depth transects 5 years 5 months ago #7113

  • Foxes
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This is fairly easy to do in the free QGIS software, as long as one manage to import the depth map as a raster surface into QGIS. After that one has only to install the plugin "Profile Tool".


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Depth transects 5 years 5 months ago #7116

  • Abramis
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Hi Matt !
Just have to say : THANK YOU VERY MUCH !!!
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Depth transects 5 years 5 months ago #7117

  • Matt
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Hey - don't thank me, thank Foxes!
Very nice example Foxes, thanks for putting it up.
Abramis - for this, you would need to export the map project in ESRI Grid format, which you can then import into QGis as a raster.
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