effort misunderstanding

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Rebecca

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Sep 30, 2024, 2:25:26 PM9/30/24
to distance-sampling
Hi there,
I have carried out a point count survey with 4 points in different areas (1 point per area) and each point was visited 80 times. I thus put the effort for each observation as 80 but the covered area has been calculated as the area covered by the point multiplied by 80. It looks like R has assumed I have covered 80 different points per area but only 4 points were covered and just visited 80 times meaning the covered area is 80x too large. How to I fix this so that the repeat measurements are accounted for but the covered area is not multiplied by the effort?
Thank you,
Rebecca 

Rebecca

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Oct 1, 2024, 2:02:05 AM10/1/24
to distance-sampling
To add another question for the same R script (above was talking about input file for ds), for my dht2 output the 'Area' is coming out as the individual area for each region whereas the 'CoveredArea' is presented as the total, meaning my abundance estimates are lower than the actual sample since the covered area is greater than the total.Screenshot 2024-09-30 at 13.33.30.png
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