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TOPIC: Bottom Composition – 1st Track Point Error

Bottom Composition – 1st Track Point Error 7 years 3 days ago #11079

  • Lalandi
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Hi Matt

During the last few months I have spent time with this module – and learned more from Reefmaser than in all the previous years I have been using it.
I have two related questions and will split it in two seperate posts.
I use version 2.0.40.0 – which I think is the latest.
For this test I created a new workspace with no tide data and no keel, water or transducer offsets.
I imported with the “Import Logs and Waypoint” option a randomly chosen short track recorded on a Lowrance unit and stored in LS3 format – both 200kHz and 3D 455kHz.
To make it easier I cropped the track points to the first 7. See TackView.jpg

What I noticed:
the 1st track point is not affected by the bottom composition palette
the returns strength window only show 6 returns
I then exported the track as a CSV file:

Latitude , Longitude , Depth(m), E1, E2, PeakSV
-34.79970868, 20.05790053, 1.8 , -1, -1, -1
-34.79970868, 20.05790955, 1.8 , 55.279, 35.823, 202.688
-34.79970128, 20.05790955, 1.8 , 59.199, 37.668, 205.156
-34.79969388, 20.05791856, 1.81, 67.327, 36.885, 209.698
-34.79969388, 20.05792758, 1.86, 68.826, 33.231, 211.644
-34.79968648, 20.05792758, 1.86, 66.075, 35.705, 210.592
-34.79968648, 20.05793659, 1.86, 64.92, 35.613, 209.188

I think the bottom values are all shifted down by one row - leaving the first track point without
bottom values.

This is what I expected to see.
Latitude, Longitude, Depth(m), E1, E2, PeakSV
-34.79970868, 20.05790053, 1.8 , 55.279, 35.823, 202.688
-34.79970868, 20.05790955, 1.8 , 59.199, 37.668, 205.156
-34.79970128, 20.05790955, 1.8 , 67.327, 36.885, 209.698
-34.79969388, 20.05791856, 1.81, 68.826, 33.231, 211.644
-34.79969388, 20.05792758, 1.86, 66.075, 35.705, 210.592
-34.79968648, 20.05792758, 1.86, 64.92, 35.613, 209.188
-34.79968648, 20.05793659, 1.86, 78.119, 47.194, 209.464

Am I missing something or is there a setting I have missed.
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