Is there a way to export or recover a full table of pointID, assigned species (or sppID), and optionally the point coordinates (X, Y), from PhotoQuad or from the .Layerpqd file?
When using PhotoQuad software (https://www.mar.aegean.gr/sonarlab/photoquad/), after performing a Point Count analysis, it's possible to assign species (or categories) to individual points. However, the exported results only include a summary like this:
spp ID; N pts per species; Cov% per species ...
22; 17;17%
23; 83;83%
Since each point has a unique pointID, I was wondering whether there is a way to export the species assigned to each individual point in order to create spatial visualizations of occupancy patterns across the sampling units. This is:
pointID; sppID
1 ; 22
2 ; 23
3 ; 23
...
This would be particularly feasible when using stratified sampling, as the pointIDs always follow the same spatial order. It would also be possible to assign approximate X and Y coordinates to each point, which could then be used for graphical representations such as heatmaps or gridplots in R.
The .Layerpqd file seems to store this information internally, as PhotoQuad retains the classification of each point when reloading the layer. I also have the spplibrary.xls file, which maps species IDs to their corresponding names. Indeed, it’s possible to view which points belong to each species by right-clicking the layer and selecting “Random Point Properties,” but I haven’t found a way to extract that data without doing it manually, which would be unnecessarily time-consuming (especially considering that this functionality must be accessible in some form, as the software clearly retains and uses this information!).
I have tried opening the .Layerpqd file as text and in R, but it appears to be in binary format. I also checked the official FAQ (https://www.mar.aegean.gr/sonarlab/photoquad/features/faq/faq.html#a15), but didn’t find any mention of exporting this point-level information.
If anyone knows a way to extract this information or anything to achieve it, I would really appreciate your help. Thank you!